Our general
strategy is purely geometric\, but the proof is based upon model-theoretic
tools coming from model theory (which I will first present\; no knowledge
of model theory will be assumed). In particular\, it uses in a crucial wa
y a geometric object defined in model-theoretic terms that Hrushovski and
Loeser attach to a given $k$-variety $X$\, which is called its stable
completion\; the only case we will have to consider is that of a curv
e\, in which the stable completion has a very nice model-theoretic propert
y\, namely the definability\, which makes it very easy to work with.
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:7234f0fd-7892-4aa0-addf-0af54d65e2bd
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20160522
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20160527
CLASS:PUBLIC
CREATED:20160324T105049
DESCRIPTION:The School will focus on Polish Groups. General theory\, exampl
es\, representations of discrete groups with Polish targets\, and applicat
ions to discrete groups\, geometry and dynamics. The three main courses wi
ll be:\n\n###Mini-Courses###\n1. **General theory of Polish groups** Julli
en Melleray\, Christian Rosendal and Todor Tsankov.\n2. **Algebraic groups
over Polish fields.** Jean Lécureux and Bertrand Rémy.\n3. **Infinite d
imensional Lie groups and their symmetric spaces** Bruno Duchesne.
LAST-MODIFIED:20160324T105049
LOCATION:Midreshet Sde-Boker
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:School on Polish Groups
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/27
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:9c4c2d6d-89c2-46b2-b865-2b7299b4df76
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20110310
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20110310
CLASS:PUBLIC
CREATED:20160412T162408
LAST-MODIFIED:20160412T162456
LOCATION:BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:The Moshe Flato Lecture Series 2011
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/30
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:28699447-b255-4554-a8a0-7f04da8c5e6e
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20081127
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20081127
CLASS:PUBLIC
CREATED:20160412T162750
LAST-MODIFIED:20160412T162750
LOCATION:BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:The Moshe Flato Lecture Series 2008
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/31
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:e65c802c-4301-4d0c-b81f-e878d429bc6c
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20070320
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20070320
CLASS:PUBLIC
CREATED:20160412T163722
LAST-MODIFIED:20160412T163736
LOCATION:BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:The Moshe Flato Lecture Series 2007
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/32
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:43021445-292b-436c-9f1b-e40b19a6d1a4
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20041125
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20041125
CLASS:PUBLIC
CREATED:20160412T163841
LAST-MODIFIED:20160412T163841
LOCATION:BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:The Moshe Flato Lecture Series 2004
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/33
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:c0fe6e76-24e0-4465-83b3-ec57b7b66d7d
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20021128
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20021128
CLASS:PUBLIC
CREATED:20160412T163948
LAST-MODIFIED:20160412T163948
LOCATION:BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:The Moshe Flato Lecture Series 2002
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/34
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:fb90e055-dd7c-432a-a0a3-fa6fc95a2e60
DTSTART;TZID=Asia/Jerusalem:20160412T170000
DTEND;TZID=Asia/Jerusalem:20160412T183000
CLASS:PUBLIC
CREATED:20160409T104246
LAST-MODIFIED:20190502T170239
LOCATION:חדר סמינרים (101-)\, בניין 58
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:ערב חשיפה לתארים מתקדמים
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/29
X-ALT-DESC:
ATTACH;FILENAME=PROG.PDF;VALUE=URI:/rails/active_storage/blobs/redirect/eyJ
fcmFpbHMiOnsiZGF0YSI6MjM4LCJwdXIiOiJibG9iX2lkIn19--ff1499f909089f002b16fe0
e5e15da4280759de6/prog.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:a14e49d6-48ab-4929-873b-7ceaf9f9e452
DTSTART;TZID=Asia/Jerusalem:20160607T140000
DTEND;TZID=Asia/Jerusalem:20160607T160000
CLASS:PUBLIC
CREATED:20160504T124333
LAST-MODIFIED:20190502T170239
LOCATION:Seminar room -101\, Math building (58)\, BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Award of the Noriko Sakurai Postdoctoral Fellowship for 2016
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/sakurai2016
X-ALT-DESC:
ATTACH;FILENAME=POSTER.PDF;VALUE=URI:/rails/active_storage/blobs/redirect/e
yJfcmFpbHMiOnsiZGF0YSI6MjM5LCJwdXIiOiJibG9iX2lkIn19--19e0e4d2bdf67bedf4c03
13ce152c8c9315e53fb/poster.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:1a3271b6-1ebc-4dac-a97e-f8106a4f5038
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20160329
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20160329
CLASS:PUBLIC
CREATED:20160320T184037
DESCRIPTION:In honor of Prof. Mikhail Klin\, on the occasion of his retirem
ent
LAST-MODIFIED:20190502T170238
LOCATION:Room -101\, Math building (58)\, BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Algebraic Combinatorics day
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/26
X-ALT-DESC:
ATTACH;FILENAME=KLIN.PDF;VALUE=URI:/rails/active_storage/blobs/redirect/eyJ
fcmFpbHMiOnsiZGF0YSI6MjM3LCJwdXIiOiJibG9iX2lkIn19--683ffbadb7bf7789fe10232
7bf2ad5ad803446ae/klin.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:e3543535-187e-41c6-b91d-7496b8d2caec
DTSTART;TZID=Asia/Jerusalem:20180508T140000
DTEND;TZID=Asia/Jerusalem:20180508T160000
CLASS:PUBLIC
CREATED:20171220T181714
LAST-MODIFIED:20190502T170240
LOCATION:Math -101
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Gauchman scholarship and Noriko Sakurai fellowships award
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/sakurai18
X-ALT-DESC:
ATTACH;FILENAME=PROGRAM2018.PDF;VALUE=URI:/rails/active_storage/blobs/redir
ect/eyJfcmFpbHMiOnsiZGF0YSI6MjQ3LCJwdXIiOiJibG9iX2lkIn19--61f5911a9671115c
c5fb115b71ddb21c98463d9c/program2018.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:296568c6-4775-4893-a618-39e1aa44aae3
DTSTART;TZID=Asia/Jerusalem:20161121T110000
DTEND;TZID=Asia/Jerusalem:20161121T120000
CLASS:PUBLIC
CREATED:20161120T110303
DESCRIPTION:#####Dynamics of Spacetime — Einstein’s equations as a geom
etric flow.\n\nSpeaker: *Dr. David Fajman* (**Vienna**)\n\nThe interpretat
ion of Einstein’s equations as a geometric flow (the Einstein flow) allo
ws to study the evolution of spacetimes from a dynamical point of view. Tw
o types of initial data are mainly considered: Firstly\, asymptotically fl
at data describing initial states of isolated self-gravitating systems and
secondly\, data on closed manifolds describing initial states for cosmolo
gical spacetimes. Studying the evolution of data under the flow we aim to
understand its long-time behavior and the global geometry of its time-deve
lopment. We are interested in the construction of static solutions (or sta
tic up to a time-rescaling) as potential attractors of the flow and their
nonlinear stability\, completeness and incompleteness properties of spacet
imes and singularity formation. We present new methods to construct and st
udy solutions by geometric and analytical tools as well as several results
in the directions mentioned above. We consider in particular the case of
matter models coupled to the Einstein equations\, which turns out to provi
de several interesting phenomena and new classes of solutions.
LAST-MODIFIED:20161120T113752
LOCATION:Math building (58)\, room 201\, BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Special lecture in Geometry and Physics
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/fajman
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:d1721fb9-7353-478a-957c-0441bd08eaed
DTSTART;TZID=Asia/Jerusalem:20170312T163000
DTEND;TZID=Asia/Jerusalem:20170317T120000
CLASS:PUBLIC
CREATED:20161215T163443
DESCRIPTION:There will be five main Mini-Courses as follows:\n\n 1. **Highe
r rank lattices rigidity and arithmeticity\,** Tsachik Gelander (Weizmann)
. \n 2. **Exotic lattices\,** Pierre-Emmanuel Caprace (U.C. Louvin).\n 3.
**Strong approximation in linear groups\,** Nikolay Nikolov (Oxford).\n 4.
**Arithmetic hyperbolic 3-manifolds\,** Nicolas Bergeron (Jussieu) \n 5.
**The congruence subgroup property\,** Nir Avni (Northwestern).
LAST-MODIFIED:20161218T210401
LOCATION:Mitzpe Ramon
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:School - Arithmetic groups
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/38
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:a45354c6-4e01-456c-9048-cf800e0ea1de
DTSTART;TZID=Asia/Jerusalem:20170116T100000
DTEND;TZID=Asia/Jerusalem:20170116T110000
CLASS:PUBLIC
CREATED:20170112T134022
DESCRIPTION:Speaker: **Anton Khoroshkin** (*HSE\, Moscow*)\n\n##### Little
discs operad\, graph complexes and applications\n\nThe little cubes operad
is one of the key objects of the deformation theory of \nthe last decade
s. I will outline its geometric definition\, some combinatorial \nmodels
and different known results and applications.
\n\nThe framed little cubes operad is much less studied and I will report
on some \nrecent results of related deformation theory\, explain relatio
nships with \nDeligne-Mumford compactifications of stable curves of
zero genus and use it to \nprove some conjectures stated for braid and c
acti groups whose representations \nappear naturally as tensor products i
n tensor and coboundary categories \ncorrespondingly.\n
LAST-MODIFIED:20170112T134022
LOCATION:Math building (58)\, room -101\, BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Special lecture
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/khoroshkin
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:0c5e9d0b-e4e0-45fa-9f58-bdf51bcb424b
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20170713
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20170713
CLASS:PUBLIC
CREATED:20170607T155520
DESCRIPTION:הנכם מוזמנים לכנס חפירות במתמטיקה
השני\, אשר יתקיים באוניברסיטת בן-גוריון ב
יום ה' ה-13.7.17.\n\nיהיו הרצאות מרתקות במגוון
נושאים\, תוכלו לפגוש ולהכיר אנשים שמתעני
ינים במתמטיקה\, וכמובן – לחפור!\n\n
LAST-MODIFIED:20170607T155530
LOCATION:אוניברסיטת בן-גוריון\, בניין 26\, חדר 4
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:חפירות במדבר
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/hafirot2017
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:128f1380-b552-4f54-8ce5-ffbd3dc8a072
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20170514
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20170519
CLASS:PUBLIC
CREATED:20171124T162010
LAST-MODIFIED:20171124T162015
LOCATION:Eilat\, Israel
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Geometric Topology and Geometry of Banach Spaces
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/GTGB
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:5ca5dd6f-1c6b-4078-a33a-8da0ab3b14b9
DTSTART;TZID=Asia/Jerusalem:20170523T140000
DTEND;TZID=Asia/Jerusalem:20170523T160000
CLASS:PUBLIC
CREATED:20170508T195233
LAST-MODIFIED:20190502T170239
LOCATION: Deichmann building for Mathematics (58)\, Seminar room -101\, BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:The Noriko Sakurai fellowship and the Friedman prize for the year 2
017
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/sakurai2017
X-ALT-DESC:
ATTACH;FILENAME=SAKURAI2017POSTER.PDF;VALUE=URI:/rails/active_storage/blobs
/redirect/eyJfcmFpbHMiOnsiZGF0YSI6MjQ0LCJwdXIiOiJibG9iX2lkIn19--18d0030099
f83caf1e09a722e86aed4d965d091e/Sakurai2017poster.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:31bb00ad-ee90-46b2-9ac4-3b3091977411
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20180422
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20180426
CLASS:PUBLIC
CREATED:20170804T072829
LAST-MODIFIED:20190502T170239
LOCATION:Eilat Campus of Ben-Gurion University of the Negev (Israel)
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Set Theory\, Model Theory and Applications
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/rubin
X-ALT-DESC:
ATTACH;FILENAME=POSTER-2018.PDF;VALUE=URI:/rails/active_storage/blobs/redir
ect/eyJfcmFpbHMiOnsiZGF0YSI6MjQ1LCJwdXIiOiJibG9iX2lkIn19--ccbffd9e4e36aa64
09842a6b3aba19d129ed8de4/Poster_2018.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:50c79a70-eb2d-4a5b-b493-a1c6720b0d73
DTSTART;TZID=Asia/Jerusalem:20160623T113000
DTEND;TZID=Asia/Jerusalem:20160623T163000
CLASS:PUBLIC
CREATED:20160603T172943
DESCRIPTION:###Speakers\n\n- **Christian MAIRE** – University of Franche-
Comté (France)\n- **Eliyahu MATZRI** – Bar-Ilan University (Israel)\n-
**Thomas WEIGEL** – University of Milano-Bicocca (Italy)\n\n###Program\n
\n11:30 -11:40\n\n: Opening with Prof. M. Cohen\n\n11:40 -12:40\n\n: C. Ma
ire - Infinite extensions of number fields\, analytic pro-p groups and fix
ed points\n\n12:45 -13:45\n\n: Lunch - offered to all participants\n\n14:0
0 -15:00\n\n: E. Matzri - One sided genus of a central simple algebra\n\n1
5:00 -15:30\n\n: Coffee break\n\n15:30 -16:30\n\n: T. Weigel - Koszul pro-
p groups\n
LAST-MODIFIED:20190502T170239
LOCATION:Seminar room -101\, Math building (58)\, BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Algebra & number theory day
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/ant2016
X-ALT-DESC:
ATTACH;FILENAME=ABSTRACTS.PDF;VALUE=URI:/rails/active_storage/blobs/redirec
t/eyJfcmFpbHMiOnsiZGF0YSI6MjQwLCJwdXIiOiJibG9iX2lkIn19--59f3b8ea9ff70820ba
fc8c0f187705ed9b1fdaea/abstracts.pdf?locale=he
ATTACH;FILENAME=POSTERANT.PDF;VALUE=URI:/rails/active_storage/blobs/redirec
t/eyJfcmFpbHMiOnsiZGF0YSI6MjQxLCJwdXIiOiJibG9iX2lkIn19--095e5ea6e9f4fd99ef
1c76f1dc92c24f6122c3af/PosterANT.PDF?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:3e800039-8c8a-4e1f-a53f-f53df73adc18
DTSTART;TZID=Asia/Jerusalem:20170103T140000
DTEND;TZID=Asia/Jerusalem:20170103T160000
CLASS:PUBLIC
CREATED:20161227T132633
LAST-MODIFIED:20190502T170239
LOCATION:בנין 37\, חדר 202
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:טקס מלגת הצטיינות על-שם גאוכמן
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/gauchman
X-ALT-DESC:
ATTACH;FILENAME=GAUCHMAN.PDF;VALUE=URI:/rails/active_storage/blobs/redirect
/eyJfcmFpbHMiOnsiZGF0YSI6MjQyLCJwdXIiOiJibG9iX2lkIn19--1e71708171b9b891043
323f0467bb4a62260e948/gauchman.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:aa7713a3-8109-4b0f-a4ac-27ad412d0f4a
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20170319
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20170324
CLASS:PUBLIC
CREATED:20170320T085936
LAST-MODIFIED:20190502T170239
LOCATION:Sde Boker
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Networks of Linear Systems and Operator Theory
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/networksoperato
rs
X-ALT-DESC:
ATTACH;FILENAME=MERGED.PDF;VALUE=URI:/rails/active_storage/blobs/redirect/e
yJfcmFpbHMiOnsiZGF0YSI6MjQzLCJwdXIiOiJibG9iX2lkIn19--94694829daedbbedd6d4c
81ca238bec6beb46a0a/merged.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:e96fc722-44e4-42c7-b6b2-4cd6ffe1b63d
DTSTART;TZID=Asia/Jerusalem:20180206T113000
DTEND;TZID=Asia/Jerusalem:20180218T113000
CLASS:PUBLIC
CREATED:20180204T175906
DESCRIPTION:**Jurij Volcic** (BGU) will give three lectures on the theory o
f universal skew fields of fractions due to P.M. Cohn\, a beautiful and po
werful tool of noncommutative algebra little known outside of a small circ
le of cognoscenti. Everybody is invited (the lectures should be accessible
for graduate students).\n\nTime and place:\n\n**Tuesday Feb. 6\, Thursday
Feb. 15\, and Sunday Feb. 18 at 11:30-13:00 in Room -101**\n\n**Abstract:
** \n\nAs opposed to the commutative setting\, localization in noncommutat
ive rings is a much more intricate topic\, accompanied with various subtle
obstacles and at first sight counter-intuitive phenomena. An exceptional
contribution to this field has been made by Paul Moritz Cohn (1924-2006) w
ith the introduction of universal skew fields of fractions in the 70's\, a
nd his subsequent development of this theory. In the self-contained course
of three talks I will try to present some of Cohn's core results with the
view towards the universal skew field of fractions of a free algebra.\n\n
**In the first lecture** we will consider the general problem of embedding
rings into skew fields\, and early difficulties accompanying it. Followin
g Cohn we will then introduce the category of epic skew fields and special
izations assigned to a fixed ring. This will allow us to talk about univer
sal skew fields of fractions and to draw parallels with the commutative th
eory.\n\n**In the second lecture** we will explain the interplay between s
pecializations\, singular kernels\, matrix ideals in matrix representation
of fractions. Our aim will be to determine necessary and sufficient condi
tions for a ring to admit a (universal) skew field of fractions.\n\n**In t
he last lecture** we will finally look at a concrete family of rings admit
ting universal skew fields of fractions: free ideal rings (firs)\, among w
hich are free algebras\, and their generalizations. We will trace down the
ir distinguishing property that fulfills the sufficient condition from the
previous lecture.
LAST-MODIFIED:20180204T175918
LOCATION:Room -101
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Cohn's theory of universal skew fields of fractions
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/51
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:60a04cd5-fe4e-4539-91a5-3fb58098b68d
DTSTART;TZID=Asia/Jerusalem:20171217T110000
DTEND;TZID=Asia/Jerusalem:20171217T170000
CLASS:PUBLIC
CREATED:20171204T173101
LAST-MODIFIED:20171204T173105
LOCATION:Math -101
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Second Local Model Theory Day
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/modthday2
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:ec9653c3-6391-41a8-8ae4-84bd1852c3d6
DTSTART;TZID=Asia/Jerusalem:20180311T164300
DTEND;TZID=Asia/Jerusalem:20180316T164300
CLASS:PUBLIC
CREATED:20180128T164608
LAST-MODIFIED:20180128T164758
LOCATION:Sea of Galilee\, at Ohalo Manor Hotel
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:The Batsheva de Rothschild Seminar on Quasicrystals\, Delone sets
and Generalizations of Lattices
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/Lattices
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:a5846ab9-3011-4563-b068-30691baa342a
DTSTART;TZID=Asia/Jerusalem:20190219T090000
DTEND;TZID=Asia/Jerusalem:20190221T170000
CLASS:PUBLIC
CREATED:20190116T204931
DESCRIPTION:המדרשה היא כנס מתמטי המיועד לתלמיד
י מתמטיקה משנה ג' והלאה\, והיא תכלול ארבע
סדרות של הרצאות על ידי חברי סגל מהמחלקה ל
מתמטיקה באוניברסיטת בן-גוריון בנגב. זוהי
הזדמנות להכיר חוקרים פעילים במתמטיקה\, ל
שמוע הרצאות על תחום מחקרם באווירה ידידות
ית\, לשוחח עימם ולשאול שאלות על מחקר מתמט
י.\n
LAST-MODIFIED:20190116T204948
LOCATION:שדה בוקר
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Mathematical Midrasha in the Negev
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/midrasha
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:a6d105ba-0191-42fc-8177-b5e0bbfb9eb9
DTSTART;TZID=Asia/Jerusalem:20190521T110000
DTEND;TZID=Asia/Jerusalem:20190521T180000
CLASS:PUBLIC
CREATED:20190313T112446
DESCRIPTION:Geometry in the Spring\n---------------------------------------
--------------\n\n**Program:**\n\n11:00-11:30 Gathering and light refreshe
ments \n\n11:30-12:30 **Ran Tessler** (Weizmann Institute of Science)\, *"
The open arf invariant and stratifications of moduli spaces of surfaces wi
th boundary"*. \n\n12:30-14:00 Lunch \n\n14:00-16:15 Award ceremony in hon
or of Noriko Sakurai\, Hillel Gauchman and Yossi Friedman. \n\n - Honorary
speaker: **Sergey Fomin** (University of Michigan\, Ann Arbor)\, *"Cluste
r Transformations"*.\n\n16:40-17:40 **Eugenii Shustin** (Tel Aviv Universi
ty)\, *TBA*\n\n
\n\n*Organizers:*\n\n - Prof. Miriam Cohen (Ben Gurion
University)\, \n - Prof. Daniel Sternheimer (Rikkyo University\, Institut
de Mathematiques de Bourgogne)\, \n - Dr. Inna Entova-Aizenbud (Ben Guri
on University).\n\nThe award ceremony will be held in the presence of Prof
. Daniel Sternheimer and Ms. Julia Gauchman.
LAST-MODIFIED:20190313T112446
LOCATION:Seminar room -101\, Deichmann bldg. 58
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Geometry in the Spring: a mini-conference on geometry
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/geometry2019
X-ALT-DESC:
Geometry in the Spring
\n\n
Program:
\n\n
11:00-11:30 Gathering and light refreshemen
ts
\n\n
11:30-12:30 Ran Tessler (Weizmann Institute
of Science)\, ”The open arf invariant and stratifications of moduli
spaces of surfaces with boundary“.
\n\n
12:30-14:00 Lunch
\
n\n
14:00-16:15 Award ceremony in honor of Noriko Sakurai\, Hillel Gauch
man and Yossi Friedman.
\n\n
\n - Honorary speaker: Serge
y Fomin (University of Michigan\, Ann Arbor)\, ”Cluster Tra
nsformations“.
\n
\n\n
16:40-17:40 Eugenii Shusti
n (Tel Aviv University)\, TBA
\n\n
\n\n
Organizers:
\n\n
\n - Prof. Miriam Cohen (Ben Gurion Un
iversity)\,
\n - Prof. Daniel Sternheimer (Rikkyo University\, Inst
itut de Mathematiques de Bourgogne)\,
\n - Dr. Inna Entova-Aizenbud
(Ben Gurion University).
\n
\n\n
The award ceremony will be hel
d in the presence of Prof. Daniel Sternheimer and Ms. Julia Gauchman.
<
/div>
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:9bbfc4fb-8d4f-4a09-8f5d-6584967a2656
DTSTART;TZID=Asia/Jerusalem:20180508T110000
DTEND;TZID=Asia/Jerusalem:20180508T160000
CLASS:PUBLIC
CREATED:20180503T204356
LAST-MODIFIED:20190502T170240
LOCATION:Math -101\, BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Complex and Symplectic geometry
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/compsympgeom18
X-ALT-DESC:
ATTACH;FILENAME=ANOUNCCENTERLOGO.PDF;VALUE=URI:/rails/active_storage/blobs/
redirect/eyJfcmFpbHMiOnsiZGF0YSI6MjQ4LCJwdXIiOiJibG9iX2lkIn19--99ba866f41e
47e6aae2f1344784ea56e56122627/AnouncCenterLogo.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:73c99ba7-92a9-4104-9a8e-410709fa63ed
DTSTART;TZID=Asia/Jerusalem:20190521T123000
DTEND;TZID=Asia/Jerusalem:20190521T161500
CLASS:PUBLIC
CREATED:20190313T112808
LAST-MODIFIED:20190502T170240
LOCATION:Seminar room -101\, Deichmann bldg. 58
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Award ceremony in honor of Noriko Sakurai\, Hillel Gauchman and Yos
si Friedman
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/awards19ceremon
y
X-ALT-DESC:
ATTACH;FILENAME=AWARD-CEREMONY.PDF;VALUE=URI:/rails/active_storage/blobs/re
direct/eyJfcmFpbHMiOnsiZGF0YSI6MjQ5LCJwdXIiOiJibG9iX2lkIn19--42cebe7c7ac18
163622d3698215099f21b23d970/award_ceremony.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:eb409300-3e41-4d2b-9f4b-89b655a1e890
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20181225
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20181225
CLASS:PUBLIC
CREATED:20181224T222031
DESCRIPTION:
Official Website (containing the full program) and
Poster\n
LAST-MODIFIED:20181224T223507
LOCATION:room -101
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Lie Superalgebra Day
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/53
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:91d0d16f-a015-4846-864c-dd1fe8d924bf
DTSTART;TZID=Asia/Jerusalem:20171126T180000
DTEND;TZID=Asia/Jerusalem:20171126T220000
CLASS:PUBLIC
CREATED:20171124T170354
DESCRIPTION:**All faculty and students are cordially invited.**\n\n#### Pro
gram \n
\n##### 18:00 Undergraduate math club\n\n*Barak Weiss*\, Tel Aviv Univ
ersity \n
\n**The illumi
nation problem**\n\nThe following elementary problem in geometry is still
open: given a polygon $$P$$ in the plane\, say that points $$x$$ and $$y$$
in $$P$$ *see each other* if there is a billiard path from $$x$$ to $$y$$
. Is there a polygon in which infinitely many pairs of points do not see e
ach other?\n\nSuch problems turn out to be easy to state but very difficul
t to solve. I will explain this and related questions in greater detail\,
and describe some recent progress which relies on well-known work of Eskin
and Mirzakhani (part of the late Maryam Mirzakhani's Field medal citation
).\n\n##### 19:00 A **Jazz show** by *Tsachik and the perverse sheaves*\n[
Ehud Ettun](http://www.ehudettun.com/) on bass\n\n[Haruka Yabuno](https://
harukayabuno.com/en) on Piano\n\n*Tsachik Gelander* on drums
LAST-MODIFIED:20190502T170239
LOCATION:Math -101
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:A night of mathematics and Jazz
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/mathnjazz
X-ALT-DESC:
All faculty and students are cor
dially invited.
\n\n
Program
\n\n
18:00 Undergraduat
e math club
\n\n
Barak Weiss\, Tel Aviv University
\n\n<
p>
The illumination problem\n\n
The following elemen
tary problem in geometry is still open: given a polygon $P$ in the plane\, say that points $x$ and $y$ in $P$
see each other if there is a billiard path from $x$ to $y$. Is there a polygon in w
hich infinitely many pairs of points do not see each other?
\n\n
Such
problems turn out to be easy to state but very difficult to solve. I will
explain this and related questions in greater detail\, and describe some
recent progress which relies on well-known work of Eskin and Mirzakhani (p
art of the late Maryam Mirzakhani‘s Field medal citation).
\n\n
19
:00 A Jazz show by Tsachik and the perverse sheaves
\n
Ehud Ettun on bass
\n\n
Haruka Yabuno on Piano\n\n
Tsachik Gelander on drums
ATTACH;FILENAME=HARUKA-AND-EHUD.JPG;VALUE=URI:/rails/active_storage/blobs/r
edirect/eyJfcmFpbHMiOnsiZGF0YSI6MjQ2LCJwdXIiOiJibG9iX2lkIn19--f945a2177da0
f13c0a6015826a01a665e6bc05ca/Haruka-and-Ehud.jpg?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:4f699041-d68b-4f3c-abf7-a1e56403f46d
DTSTART;TZID=Asia/Jerusalem:20200113T103000
DTEND;TZID=Asia/Jerusalem:20200113T161500
CLASS:PUBLIC
CREATED:20191231T165346
DESCRIPTION:10.30 - 11.00 Welcome\n\n11.00 - 11:50 Francesco Saettone (BGU)
\, *Analytic continuation of L-functions of characters: Tate's thesis.*\n\
n12.05 - 12.55 Zev Rosengarten (HUJI)\, *L-functions of characters and reg
ulators: Beilinson's conjecture*.\n\n\n14.15 - 15.05 Amnon Besser (BGU)\,
*The p-adic Beilinson conjectures for number fields.*\n\n15.20 -16.00 Yota
m Svoray (BGU)\, *Polylogarithms and their geometry.*\n\n16.00 -16.15 (bon
us content): Ishai Dan-Cohen (BGU) *Regulators are polylogarithms.*\n\nAll
talks in room -101.
LAST-MODIFIED:20191231T165506
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:The HUJI-BGU Workshop in Arithmetic
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/the-huji-bgu-wo
rkshop-in-arithmetic
X-ALT-DESC:
10.30 - 11.00 Welcome
\n\n
11.00 -
11:50 Francesco Saettone (BGU)\, Analytic continuation of L-functions
of characters: Tate‘s thesis.
\n\n
12.05 - 12.55 Zev Rosengart
en (HUJI)\, L-functions of characters and regulators: Beilinson‘s co
njecture.
\n\n
14.15 - 15.05 Amnon Besser (BGU)\, The p-adic
Beilinson conjectures for number fields.
\n\n
15.20 -16.00 Yota
m Svoray (BGU)\, Polylogarithms and their geometry.
\n\n
16.
00 -16.15 (bonus content): Ishai Dan-Cohen (BGU) Regulators are polylo
garithms.
\n\n
All talks in room -101.
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:d41fd772-aa41-497c-83bc-237ff4b2ea15
DTSTART;TZID=Asia/Jerusalem:20191020T110000
DTEND;TZID=Asia/Jerusalem:20191020T160000
CLASS:PUBLIC
CREATED:20190925T175324
DESCRIPTION:You are cordially invited to a “beginning-of-the-year” info
rmal picnic/potluck for the math department.
\nWe will meet in the Amphitheater in Ashkelon National
Park on Sunday\, October 20th\, 2019\, at 11:00\, take a walk and have a p
icnic. \n\nA potluck is a party or a picnic whe
re each guest brings some food to share with the others. It is recommende
d that every family with $N$ members brings a dish (choice of dish entirel
y up to you)\, which should be enough for at least $(N+4)$ people.
\n\nIf you are
interested in attending\, please register [here](https://forms.gle/h7LfFX5
PPRCgdFt8A). \n\nHere is some [inform
ation about the park](https://www.parks.org.il/en/reserve-park/ashkelon-na
tional-park/).\n\n**Remark**: one needs to buy a ticket at the entrance to
enter the park (the prices appear in the website above).\n\n
LAST-MODIFIED:20190925T181835
LOCATION:Amphitheater\, Ashkelon National Park
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Department picnic
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/start2019
X-ALT-DESC:
You are cordially invited to a “beginn
ing-of-the-year” informal picnic/potluck for the math department.
\nWe will meet in the Amphith
eater in Ashkelon National Park on Sunday\, October 20th\, 2019\, at 11:00
\, take a walk and have a picnic.
\n\n
A potluck is a party or a picn
ic where each guest brings some food to share with the others. It is reco
mmended that every family with $N$ members brings a dish (choice of dish e
ntirely up to you)\, which should be enough for at least $(N+4)$ people.\n\n
If you are interested in attending\, please register here.
\n\n
Here is some inform
ation about the park.
\n\n
Remark: one needs to
buy a ticket at the entrance to enter the park (the prices appear in the w
ebsite above).
ATTACH;FILENAME=STARTOFTHEYEAR2019.PDF;VALUE=URI:/rails/active_storage/blob
s/redirect/eyJfcmFpbHMiOnsiZGF0YSI6MzYwLCJwdXIiOiJibG9iX2lkIn19--ac965038f
c50125990e910c3843434f462814849/Startoftheyear2019.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:e5a0993d-7c26-4dfc-8928-8a2db724e279
DTSTART;TZID=Asia/Jerusalem:20191024T093000
DTEND;TZID=Asia/Jerusalem:20191024T180000
CLASS:PUBLIC
CREATED:20190714T092436
DESCRIPTION:הנכם מוזמנים ליום עיון "האריה המתמ
טי" באוניברסיטת בן-גוריון בנגב. יום העיון
יכיל 6 הרצאות בנושאים שונים במתמטיקה\, המ
יועדות לקהל מתמטי רחב. תכנית מפורטת של יו
ם העיון\, כולל תקצירי הרצאות ודרישות קדם
לכל הרצאה\, תופיע ב[אתר האירוע][1].\nמחכים ל
כם!\n\nהמרצים:\n\n- דור אלימלך \n\n- גילי גולן \n
\n- איליה טיומקין \n\n- אריאל ידין \n\n- מנחם ק
וג'מן \n\n- לירן רון\n\n\n\n [1]: https://innaentova.wixsite.c
om/mathlion
LAST-MODIFIED:20190714T092620
LOCATION:אוניברסיטת בן-גוריון בנגב (קמפוס ע"ש
משפחת מרקוס)\, בניין 26\, אולם 5
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:האריה המתמטי: יום עיון לקהל מתמטי רחב
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/MathLion19
X-ALT-DESC:
הנכם מוזמנים ליום עיו
ן ”האריה המתמטי“ באוניברסיטת בן-גוריון
בנגב. יום העיון יכיל 6 הרצאות בנושאים שונ
ים במתמטיקה\, המיועדות לקהל מתמטי רחב. תכ
נית מפורטת של יום העיון\, כולל תקצירי הרצ
אות ודרישות קדם לכל הרצאה\, תופיע באתר האירוע.\nמחכים
לכם!
\n\n
המרצים:
\n\n
\n - \n
דור אלי
מלך
\n \n - \n
גילי גולן
\n \n -
\n
איליה טיומקין
\n \n - \n
אריאל
ידין
\n \n - \n
מנחם קוג‘מן
\n
\n - \n
לירן רון
\n\n \n
ATTACH;FILENAME=MATHLION2019.PDF;VALUE=URI:/rails/active_storage/blobs/redi
rect/eyJfcmFpbHMiOnsiZGF0YSI6MzUwLCJwdXIiOiJibG9iX2lkIn19--731ee7fbac0996f
dfa8b8d75f364ee3064bc5a81/mathLion2019.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:5f45cc82-0187-46a1-b0b7-77e4e3385ddf
DTSTART;TZID=Asia/Jerusalem:20200224T100000
DTEND;TZID=Asia/Jerusalem:20200226T160000
CLASS:PUBLIC
CREATED:20200220T150420
DESCRIPTION:המדרשה היא כנס מתמטי המיועד לתלמיד
י מתמטיקה משנה ג’ והלאה\, והיא תכלול ארבע
סדרות של הרצאות על ידי חברי סגל מהמחלקה
למתמטיקה באוניברסיטת בן-גוריון בנגב. זוה
י הזדמנות להכיר חוקרים פעילים במתמטיקה\,
לשמוע הרצאות על תחום מחקרם באווירה ידידו
תית\, לשוחח עימם ולשאול שאלות על מחקר מתמ
טי.
LAST-MODIFIED:20200220T150436
LOCATION:שדה בוקר
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:2020 המדרשה המתמטית השנייה בנגב
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/2020
X-ALT-DESC:
המדרשה היא כנס מתמטי ה
מיועד לתלמידי מתמטיקה משנה ג’ והלאה\, וה
יא תכלול ארבע סדרות של הרצאות על ידי חברי
סגל מהמחלקה למתמטיקה באוניברסיטת בן-גור
יון בנגב. זוהי הזדמנות להכיר חוקרים פעיל
ים במתמטיקה\, לשמוע הרצאות על תחום מחקרם
באווירה ידידותית\, לשוחח עימם ולשאול שאל
ות על מחקר מתמטי.
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:6e03d752-f793-4385-95b5-30fc2730f94e
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20200215
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20200216
CLASS:PUBLIC
CREATED:20191226T073250
DESCRIPTION:A conference in celebration of the 60th Birthday of [Amnon Yeku
tieli](/~amyekut) (Ben Gurion University) and the publication of his new b
ook [Derived Categories](https://www.cambridge.org/il/academic/subjects/ma
thematics/algebra/derived-categories)
LAST-MODIFIED:20191226T222206
LOCATION:Charles University in Prague
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Derived Categories
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/yekutieli
X-ALT-DESC:
ATTACH;FILENAME=POSTER.JPG;VALUE=URI:/rails/active_storage/blobs/redirect/e
yJfcmFpbHMiOnsiZGF0YSI6MzcyLCJwdXIiOiJibG9iX2lkIn19--4cd985deb13877c5f267a
b14f6ac92bf8c626c63/poster.jpg?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:5d4cdba1-0032-49dd-b4af-545e8594338b
DTSTART;TZID=Asia/Jerusalem:20200227T120000
DTEND;TZID=Asia/Jerusalem:20200227T130000
CLASS:PUBLIC
CREATED:20200222T014507
DESCRIPTION:**Speaker**: [Yves de Cornulier](https://www.normalesup.org/~co
rnulier/) (*CNRS\, University Lyon 1*)\n\n**Place**: Room -101\, Math buil
ding (58)\n\n**Title**: near actions\n\n**Abstract**\nA near permutation o
f a set $$X$$ is a permutations "up to finite subset". It can be formally
defined as the germ at infinity of a homeomorphism of the one-point compac
tification of $$X$$. A near action of a group is a homomorphism into the g
roup of near permutations of a set. We notably study realizability of near
actions\, namely understanding obstructions to being induced by a genuine
action. These concepts can be applied to the study of the class $$(M)$$ o
f maximal abelian subgroups of $$S_\\omega/fin$$\, where $$S_\\omega$$ is
the group of permutations of the countable\nset $$\\omega$$ and $$fin$$ is
its normal subgroup of finitely supported permutations. Uncountable group
s in the class $$(M)$$ have been studied by\nShelah and Steprans (2007). W
e characterize countable abelian groups that occur in the class $$(M)$$.
LAST-MODIFIED:20200223T102531
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Special Lecture
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/cornulier
X-ALT-DESC:
Speaker: Yves de Cornulier (CNRS\, Unive
rsity Lyon 1)
\n\n
Place: Room -101\, Math buil
ding (58)
\n\n
Title: near actions
\n\n
Abstract\nA near permutation of a set $X$ is a permutations ”up to finite subset“. It can be formally defi
ned as the germ at infinity of a homeomorphism of the one-point compactifi
cation of $X$. A near action of a group is a h
omomorphism into the group of near permutations of a set. We notably study
realizability of near actions\, namely understanding obstructions to bein
g induced by a genuine action. These concepts can be applied to the study
of the class $(M)$ of maximal abelian subgroup
s of $S_\\omega/fin$\, where $S_\\omega$ is the group of permutations of the countable\nset
$\\omega$ and $fin$ is its normal subgroup of finitely supported permutations. Uncountable g
roups in the class $(M)$ have been studied by\
nShelah and Steprans (2007). We characterize countable abelian groups that
occur in the class $(M)$.
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:ea8c2f4e-cf56-4add-a612-f8454627954d
DTSTART;TZID=Asia/Jerusalem:20200512T151000
DTEND;TZID=Asia/Jerusalem:20200512T160000
CLASS:PUBLIC
CREATED:20200503T140429
DESCRIPTION:Speaker: [Shai Shalev-Shwartz][1] (CS- HUJI)\n\nTitle: The Day
after COVID-19 Lockdown\n\nAbstract:\nGiven the latest statistics\, we pre
dict that with a proper differential social distancing placing different
guidelines on the low-risk group compared to the high-risk group one could
maintain a working economy without quarantine and save a factor of 5 on m
ortality while not flooding the health system. \nThe talk will highlight s
ome of the computational tools used to reach these conclusions.\n\nBased o
n joint work with Amnon Shashua\n\nHere are some relevant articles:\n\nhtt
ps://medium.com/@amnon.shashua/the-day-after-covid-19-lockdown-need-to-foc
us-on-the-vulnerable-42c0a360a27\n\nhttps://medium.com/@amnon.shashua/the-
path-for-economic-revival-4d60d652b381\n\nhttps://medium.com/amnon-shashua
/can-we-contain-covid-19-without-locking-down-the-economy-2a134a71873f\n\n
\n [1]: https://www.cs.huji.ac.il/~shais/
LAST-MODIFIED:20200505T165055
LOCATION:https://zoom.us/j/98555756455
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Special seminar: The Day after COVID-19 Lockdown
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/special-seminar
-the-day-after-covid-19-lockdown
X-ALT-DESC:
Speaker: Shai Shalev-Shwartz (CS- HUJI)
\n\n
Title: The Day a
fter COVID-19 Lockdown
\n\n
Abstract:\nGiven the latest statistics\,
we predict that with a proper differential social distancing placing diff
erent guidelines on the low-risk group compared to the high-risk group one
could maintain a working economy without quarantine and save a factor of
5 on mortality while not flooding the health system. \nThe talk will highl
ight some of the computational tools used to reach these conclusions.
\
n\n
Based on joint work with Amnon Shashua
\n\n
Here are some relev
ant articles:
\n\n
https://medium.com/@amnon.shashua/the-day-after-co
vid-19-lockdown-need-to-focus-on-the-vulnerable-42c0a360a27
\n\n
http
s://medium.com/@amnon.shashua/the-path-for-economic-revival-4d60d652b381\n\n
https://medium.com/amnon-shashua/can-we-contain-covid-19-without-
locking-down-the-economy-2a134a71873f
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:d28c387a-f38e-4e0c-88a1-280b49a86bdb
DTSTART;TZID=Asia/Jerusalem:20210713T123000
DTEND;TZID=Asia/Jerusalem:20210713T140000
CLASS:PUBLIC
CREATED:20210711T140951
LAST-MODIFIED:20210711T140951
LOCATION:https://us02web.zoom.us/j/89129957790
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Noriko Sakurai fellowship and Hillel Gauchman Prize
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/Sakurai-Gauchma
n-21
X-ALT-DESC:
ATTACH;FILENAME=--UTF-8-B-16RXLDEB16DXMDEQXZEZLJA3LJIXX1BYB2DYYW0GB2YGU2FRD
XJHAV9HYXVJ-----UTF-8-Q-HMAN-5FMEETING.PDF--;VALUE=URI:/rails/active_stora
ge/blobs/redirect/eyJfcmFpbHMiOnsiZGF0YSI6NDM0LCJwdXIiOiJibG9iX2lkIn19--1f
b5fcdd85ad7b520a9e06e33abdc14c7f9210d2/__utf-8_B_16rXldeb16DXmdeqXzEzLjA3L
jIxX1Byb2dyYW0gb2YgU2FrdXJhaV9HYXVj_____utf-8_Q_hman_5Fmeeting.pdf__?local
e=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:d9fdc847-7a2b-474c-b37a-07fd4ecb98f0
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20210808
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20210813
CLASS:PUBLIC
CREATED:20210807T001153
DESCRIPTION:We are happy to invite you to an interdisciplinary meeting on S
ymmetry using Zoom.\n\nThere are sessions in Physics\, Mathematics and CS\
, Biology and Chemistry.\n\nThe Math and CS sessions are scheduled for Mon
day Aug. 9 and Wed August 11\, between 11-15.
LAST-MODIFIED:20210807T001153
LOCATION:https://us02web.zoom.us/j/87050662688.alks
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Symmetry 2021 --- The 3rd International Conference on Symmetry
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/symmetry2021
X-ALT-DESC:
We are happy to invite you to an interdi
sciplinary meeting on Symmetry using Zoom.
\n\n
There are sessions in
Physics\, Mathematics and CS\, Biology and Chemistry.
\n\n
The Math
and CS sessions are scheduled for Monday Aug. 9 and Wed August 11\, betwee
n 11-15.
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:a7d4a5ea-bcdc-4f22-bf39-589449efce3a
DTSTART;TZID=Asia/Jerusalem:20220531T103000
DTEND;TZID=Asia/Jerusalem:20220531T163000
CLASS:PUBLIC
CREATED:20220511T222028
DESCRIPTION:Dear friends and colleagues.\n\nWe are delighted to invite you
to a special day of lectures on dynamics and probability:\n\nIn honor of M
ichael Lin's 80th birthday.\nAt Ben-Gurion university of the Negev. \nOn T
uesday 31/5/2022 between 10:30-16:30.\n\nThere will be four lectures given
by:\n\nJon Aaronson (Tel-Aviv University)\nDmitry Dolgopyat (University o
f Maryland)\nOmri Sarig (Weizmann institute)\nEli Glasner (Tel-Aviv Univer
sity)\n\nPlease save the date. We will soon send an additional e-mail with
more precise information.\n\n
LAST-MODIFIED:20220513T171711
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:A day of lectures on probability and dynamics\; celebrating Michael
Lin's birthday.
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/a-day-of-lectur
es-on-probability-and-dynamics-celebrating-michael-lin-s-birthday
X-ALT-DESC:
Dear friends and colleagues.
\n\n
W
e are delighted to invite you to a special day of lectures on dynamics and
probability:
\n\n
In honor of Michael Lin‘s 80th birthday.\nAt Ben
-Gurion university of the Negev. \nOn Tuesday 31/5/2022 between 10:30-16:3
0.
\n\n
There will be four lectures given by:
\n\n
Jon Aaronson
(Tel-Aviv University)\nDmitry Dolgopyat (University of Maryland)\nOmri Sar
ig (Weizmann institute)\nEli Glasner (Tel-Aviv University)
\n\n
Pleas
e save the date. We will soon send an additional e-mail with more precise
information.
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:2442bf86-d7b4-49a9-9557-c92ae09bef93
DTSTART;TZID=Asia/Jerusalem:20220619T131500
DTEND;TZID=Asia/Jerusalem:20220619T163000
CLASS:PUBLIC
CREATED:20220614T141827
DESCRIPTION:### The Department of Mathematics and the Center of Advanced St
udies in Mathematics\n\n##### announce a\n\n## Mathematics Excellence Day\
n\n#### to honor 2022 Wolf prize laureate **Prof. George Lusztig** (MIT) a
nd to award the *Noriko Sakurai fellowship*\, the *Gauchman excellence sch
olarship* and the *Zabey prize*
LAST-MODIFIED:20220614T141827
LOCATION:Deichmann building for Mathematics (58)\, Seminar room -101
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Mathematics Excellence Day
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/excellence2022
X-ALT-DESC:
The Department of Mathematics and the C
enter of Advanced Studies in Mathematics
\n\nannounce a
\n\nMathematics Excellence Day\n\nto honor 2022 Wolf prize laureate
Prof. George Lusztig (MIT) and to award the Noriko S
akurai fellowship\, the Gauchman excellence scholarship and
the Zabey prize
ATTACH;FILENAME=PROGRAM2022.PDF;VALUE=URI:/rails/active_storage/blobs/redir
ect/eyJfcmFpbHMiOnsiZGF0YSI6NDYzLCJwdXIiOiJibG9iX2lkIn19--e823dc56842a3dcc
f41359dbd1a7bced3dd31d03/program2022.pdf?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:c5249aee-9af7-4ee0-846f-618ce39eb77e
DTSTART;TZID=Asia/Jerusalem:20220718T111000
DTEND;TZID=Asia/Jerusalem:20220718T130000
CLASS:PUBLIC
CREATED:20220715T094510
DESCRIPTION:**Title**: Existence of outer automorphisms of the Calkin algeb
ra is undecidable in ZFC\n\n**Speaker**: *N. Christopher Phillips*\, Unive
rsity of Oregon and Ben Gurion University of the Negev\n\n##### Abstract:\
n\nThe Calkin algebra $$Q$$ is the quotient of the algebra $$L(H)$$ of bou
nded operators on a separable infinite dimensional Hilbert space $$H$$ by
the\nideal of compact operators (the closure of the ideal of finite rank o
perators). It is an explicit simple $C^*$-algebra\, first studied by Calki
n in 1941. It takes a few lines to prove that every automorphism of $L(H)$
is inner\, that is\, of the form $$a\\mapsto ua u^{-1}$$ for some unitary
$$u$$ in $$L(H)$$. Are all automorphisms of $$Q$$ inner? Despite the conc
rete description of $$Q$$\, this is undecidable in ZFC. Assuming the Conti
nuum Hypothesis (CH)\, there are outer (that is\, not inner) automorphisms
(joint with Weaver\, 2007). Assuming the Open Coloring Axiom (OCA\; also
called Todorcevic's Axiom)\, all automorphisms of $$Q$$ are inner (Farah\,
2011).\n\nIn these talks\, we will outline proofs of both results. The ta
lks are intended to be accessible to people in both operator algebras and
set theory. We will follow Farah's reproof of the existence of outer autom
orphisms under CH\, which uses much less $$C^*$$-algebra machinery than th
e original proof\, and uses some of the same ingredients as the proof of n
onexistence under OCA.\n\nWe will very briefly say something about later r
esults which have been proved\, as well as problems which remain open\, in
volving generalizations of the Calkin algebra\, such as outer multiplier a
lgebras of $$C^*$$-algebras and $$l^p$$ Calkin algebras. It remains open w
hether the existence of orientation reversing automorphisms of the origina
l Calkin algebra is consistent with ZFC.
LAST-MODIFIED:20220717T225150
LOCATION:https://us02web.zoom.us/j/87082725411?pwd=dWMvdUpKUVpndVNHMHBiakZv
YjdNUT09
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Special lecture
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/calkin-ncphilli
ps
X-ALT-DESC:
Title: Existence of out
er automorphisms of the Calkin algebra is undecidable in ZFC
\n\n
Speaker: N. Christopher Phillips\, University of Or
egon and Ben Gurion University of the Negev
\n\n
Abstract:
\n\n<
p>The Calkin algebra
$Q$ is the quotient of th
e algebra
$L(H)$ of bounded operators on a sep
arable infinite dimensional Hilbert space
$H$
by the\nideal of compact operators (the closure of the ideal of finite ran
k operators). It is an explicit simple $C^*$-algebra\, first studied by Ca
lkin in 1941. It takes a few lines to prove that every automorphism of $L(
H)$ is inner\, that is\, of the form
$a\\mapsto ua u^
{-1}$ for some unitary
$u$ in
$L(H)$. Are all automorphisms of
$
Q$ inner? Despite the concrete description of
$Q$\, this is undecidable in ZFC. Assuming the Continuum Hypothesis
(CH)\, there are outer (that is\, not inner) automorphisms (joint with We
aver\, 2007). Assuming the Open Coloring Axiom (OCA\; also called Todorcev
ic‘s Axiom)\, all automorphisms of
$Q$ are i
nner (Farah\, 2011).\n\n
In these talks\, we will outline proofs of
both results. The talks are intended to be accessible to people in both op
erator algebras and set theory. We will follow Farah‘s reproof of the ex
istence of outer automorphisms under CH\, which uses much less $C^*$-algebra machinery than the original proof\, and use
s some of the same ingredients as the proof of nonexistence under OCA.
\n\n
We will very briefly say something about later results which have b
een proved\, as well as problems which remain open\, involving generalizat
ions of the Calkin algebra\, such as outer multiplier algebras of $C^*$-algebras and $l^p$ C
alkin algebras. It remains open whether the existence of orientation rever
sing automorphisms of the original Calkin algebra is consistent with ZFC.<
/p>
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:9d05fecb-a66f-45eb-9266-ae88577c0eb9
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20230502
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20230511
CLASS:PUBLIC
CREATED:20230421T114938
DESCRIPTION:Prof. [Rahim Moosa](https://www.math.uwaterloo.ca/~rmoosa/) wil
l give a mini-course of three lectures\, via the program for researchers f
rom abroad. The first\, introductory talk will be given as a [Colloquium t
alk](/research/spring2023/seminars/colloquium/meetings/2023-05-02)\, follo
wed by the [second](/research/events/moosa-2) and [third](/research/events
/moosa-3) talks during the following week.
LAST-MODIFIED:20230423T225606
LOCATION:Department of mathematics\, BGU
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Mini-Course: Model theory of algebraic vector fields
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/moosa-dcf
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:b7a317f8-d251-429f-bd52-0b92bedfc25f
DTSTART;TZID=Asia/Jerusalem:20230504T101000
DTEND;TZID=Asia/Jerusalem:20230504T110000
CLASS:PUBLIC
CREATED:20230423T224750
DESCRIPTION:This is the second lecture from the Mini-Course *Model theory o
f algebraic vector fields* by [Rahim Moosa](https://www.math.uwaterloo.ca
/~rmoosa/). The first lecture is given as a [Colloquium talk](/research/sp
ring2023/seminars/colloquium/meetings/2023-05-02)\, and the third lecture
is described [here](/research/events/moosa-3).\n\n###### Abstract\nIn this
talk I will discuss how one translates between notions coming from model
theory and from differential-algebraic geometry. This should serve as an e
xplanation for how model theory is involved in the results about algebraic
vector fields that were discussed in [Lecture 1](/research/spring2023/sem
inars/colloquium/meetings/2023-05-02) (colloquium).
LAST-MODIFIED:20230503T183320
LOCATION:https://us02web.zoom.us/j/88987161880
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:From model theory to differential-algebraic geometry (Special lectu
re)
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/moosa-2
X-ALT-DESC:
This is the second lecture from the Mini
-Course Model theory of algebraic vector fields by Rahim Moosa. The first lecture is
given as a Colloquium talk\, and the third lecture is described here.
\n\n
Abstract
\n
In this t
alk I will discuss how one translates between notions coming from model th
eory and from differential-algebraic geometry. This should serve as an exp
lanation for how model theory is involved in the results about algebraic v
ector fields that were discussed in Lecture 1 (colloquium).
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:d4aca269-9a48-4d39-b336-ed6689e4db56
DTSTART;TZID=Asia/Jerusalem:20230508T141000
DTEND;TZID=Asia/Jerusalem:20230508T150000
CLASS:PUBLIC
CREATED:20230423T225302
DESCRIPTION:This is the third lecture from the Mini-Course *Model theory of
algebraic vector fields* by [Rahim Moosa](https://www.math.uwaterloo.ca/
~rmoosa/). The first lecture is given as a [Colloquium talk](/research/spr
ing2023/seminars/colloquium/meetings/2023-05-02)\, and the details for the
second one are [here](/research/events/moosa-2).\n\n###### Abstract\n In
this final lecture I will sketch the proof that the degree of nonminimalit
y of a finite rank type in DCF is at most two\, and deduce as a consequenc
e one of the theorems stated in [Lecture 1](/research/spring2023/seminars/
colloquium/meetings/2023-05-02).
LAST-MODIFIED:20230508T154849
LOCATION:https://us02web.zoom.us/rec/share/slsnx1_j5-ZTJYFD3Azrt4CzOi1aIsJu
HZAhx2FwqvvtpavfgmvSJy8MmmegG-T5.naCQKrOXLcnFVOOP?startTime=1683544246000
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:The degree of nonminimality is at most two (Special lecture)
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/moosa-3
X-ALT-DESC:
This is the third lecture from the Mini-
Course Model theory of algebraic vector fields by Rahim Moosa. The first lecture is g
iven as a Colloquium talk\, and the details for the second one are here.
\n\n
Abstract
\n
In thi
s final lecture I will sketch the proof that the degree of nonminimality o
f a finite rank type in DCF is at most two\, and deduce as a consequence o
ne of the theorems stated in Lecture 1.
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:5ae51ba5-dd36-4b53-9487-7ec15d29daca
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20240709
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20240709
CLASS:PUBLIC
CREATED:20240709T132308
LAST-MODIFIED:20240709T132632
LOCATION:https://us02web.zoom.us/j/86397439775?pwd=GwFXMkhbqFSajS4bBRkXTQbW
OGtFtQ.1
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Excellence day
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/excellence24
X-ALT-DESC:
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:f9c6f2c0-2789-4842-9293-c9183e3c753f
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20250309
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20250311
CLASS:PUBLIC
CREATED:20241125T152431
DESCRIPTION:הנכם מוזמנים להשתתף במדרשה המתמטי
ת השלישית בנגב\, אשר צפויה להתקיים בתאריכ
ים 9-11 במרץ 2025 (ט'-י"א באדר תשפ"ה). זוהי הזדמ
נות להכיר חוקרים פעילים במתמטיקה\, לשמוע
הרצאות על תחום מחקרם באווירה ידידותית\, ל
שוחח עימם ולשאול שאלות על מחקר מתמטי.\n\n
המדרשה תכלול ארבע סדרות של הרצאות על ידי
חברי סגל מהמחלקה למתמטיקה באוניברסיטת ב
ן-גוריון בנגב\, וכן טיול באזור שדה בוקר (ב
התאם לתנאי מזג האוויר).
LAST-MODIFIED:20241125T152431
LOCATION:מדרשת בן-גוריון
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:המדרשה המתמטית בנגב
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/midrasha25
X-ALT-DESC:
הנכם מוזמנים להשתתף ב
מדרשה המתמטית השלישית בנגב\, אשר צפויה לה
תקיים בתאריכים 9-11 במרץ 2025 (ט‘-י“א באדר ת
שפ“ה). זוהי הזדמנות להכיר חוקרים פעילים
במתמטיקה\, לשמוע הרצאות על תחום מחקרם באו
וירה ידידותית\, לשוחח עימם ולשאול שאלות ע
ל מחקר מתמטי.
\n\n
המדרשה תכלול ארבע סד
רות של הרצאות על ידי חברי סגל מהמחלקה למת
מטיקה באוניברסיטת בן-גוריון בנגב\, וכן טי
ול באזור שדה בוקר (בהתאם לתנאי מזג האוויר
).
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:a33f872b-9673-453e-9869-2af8c76e67ab
DTSTART;TZID=Asia/Jerusalem:20250318T135000
DTEND;TZID=Asia/Jerusalem:20250318T155000
CLASS:PUBLIC
CREATED:20250312T121648
DESCRIPTION: \n#### לו"ז:\n\n 1. 13:50-14:10: כיבוד ומינגלי
נג מעגלי\n 2. 14:10-15:00: מארכימדס ועד ל-CHAT GPT. א
יחוד נוסחאות לפאי (אלישיב לייבטאג\, טכניו
ן). \n 3.
15:10-15:50: חידון נושא פרסים על פאי\, יום הפאי\
, מתמטיקה ומתמטיקאים\, מגדנאות ועוד.
\n\n##### מאר
כימדס ועד ל-CHAT GPT. איחוד נוסחאות לפאי.\n\nהק
בוע המתמטי פאי (π) ריתק מתמטיקאים לאורך ה
דורות. נוסחאות לקירובים רציונליים לפאי ה
ופיעו במקומות וזמנים שונים ובמגוון הקשר
ים מדעיים. מארכימדס ועד מדהווה\, ליבניץ\,
גאוס\, אוילר\, רמנוג'אן ועד לנוסחאות מודרנ
יות שמגיעות מתורת המיתרים\, כל נוסחת קירו
ב היא עדות לתופעה מתמטית מעניינת. השפע הז
ה של נוסחאות מעורר שאלות מסקרנות: האם הן
מקושרות זו לזו? כיצד הן שונות? מה משותף לה
ן\, ואיזו נוסחה מציעה את הקירוב "הטוב ביות
ר"?\n\nבשנת 2021\, צוות מדענים מהטכניון יצר מג
וון רחב של נוסחאות חדשות לפאי\, מה שהוביל
לגילוי מבנה מתמטי חדש: שדה משמר מטריציאל
י (Conservative Matrix Field - CMF). בהרצאה זו נציג את ה-
CMF ונראה כיצד נוסחאות הקירוב המפורסמות ל
פאי של לייבניץ\, לורד ברונקר\, וואליס\, גא
וס\, אוילר\, רמנוג'אן ואחרים ניתנות לפירוש
כ"כיוונים" שונים בתוך שדה משמר ייחודי.\n\n
לקינוח\, ניצור פאי משלנו—הביאו סכו"ם ומח
שב נייד!\n\nההרצאה מבוססת על המאמר [From Euler to
AI: Unifying Formulas for Mathematical Constants](https://arxiv.org/pdf/2
502.17533) המתאר את תהליך ה"קצירה" (harvesting) וה"ע
ימור" (Clustering)
LAST-MODIFIED:20250312T150005
LOCATION:-101
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:יום הפאי
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/piday25
X-ALT-DESC:
\n
לו“ז:
\n\n
\n - 13:50-
14:10: כיבוד ומינגלינג מעגלי
\n - 14:10-15:00:
מארכימדס ועד ל-CHAT GPT. איחוד נוסחאות לפאי (
אלישיב לייבטאג\, טכניון).
\n - 15:10-15:50: חי
דון נושא פרסים על פאי\, יום הפאי\, מתמטיקה
ומתמטיקאים\, מגדנאות ועוד.
\n
\n\n
מאר
כימדס ועד ל-CHAT GPT. איחוד נוסחאות לפאי.
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n
הקבוע המתמטי פאי (π) ריתק מתמטיקאים לאו
רך הדורות. נוסחאות לקירובים רציונליים לפ
אי הופיעו במקומות וזמנים שונים ובמגוון ה
קשרים מדעיים. מארכימדס ועד מדהווה\, ליבני
ץ\, גאוס\, אוילר\, רמנוג‘אן ועד לנוסחאות מ
ודרניות שמגיעות מתורת המיתרים\, כל נוסחת
קירוב היא עדות לתופעה מתמטית מעניינת. הש
פע הזה של נוסחאות מעורר שאלות מסקרנות: הא
ם הן מקושרות זו לזו? כיצד הן שונות? מה משו
תף להן\, ואיזו נוסחה מציעה את הקירוב ”הטו
ב ביותר“?
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בשנת 2021\, צוות מדענים מהטכ
ניון יצר מגוון רחב של נוסחאות חדשות לפאי\
, מה שהוביל לגילוי מבנה מתמטי חדש: שדה מש
מר מטריציאלי (Conservative Matrix Field - CMF). בהרצאה
זו נציג את ה-CMF ונראה כיצד נוסחאות הקירוב
המפורסמות לפאי של לייבניץ\, לורד ברונקר\,
וואליס\, גאוס\, אוילר\, רמנוג‘אן ואחרים נ
יתנות לפירוש כ“כיוונים“ שונים בתוך שדה
משמר ייחודי.
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לקינוח\, ניצור פאי משל
נו—הביאו סכו“ם ומחשב נייד!
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ההרצאה
מבוססת על המאמר Fr
om Euler to AI: Unifying Formulas for Mathematical Constants המתא
ר את תהליך ה“קצירה“ (harvesting) וה“עימור“ (C
lustering)
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JfcmFpbHMiOnsiZGF0YSI6MTA1MCwicHVyIjoiYmxvYl9pZCJ9fQ==--2be82e91c8230f118d
53f056846d12b209205240/PiDay.png?locale=he
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:85ee644c-3c86-46ff-b58e-2a9bc17d09d3
DTSTART;TZID=Asia/Jerusalem:20260108T093000
DTEND;TZID=Asia/Jerusalem:20260108T170000
CLASS:PUBLIC
CREATED:20251128T164755
DESCRIPTION:The event is supported by the center for advanced studies in ma
thematics
LAST-MODIFIED:20251229T183934
LOCATION:Room -101 Building 58
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:Action now wandering Seminar - First meeting 2026
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/action-now-wand
ering-seminar-first-meeting-2026
X-ALT-DESC:
The event is supported by the center for
advanced studies in mathematics
END:VEVENT
BEGIN:VEVENT
DTSTAMP:20260423T092536Z
UID:f97cdf65-8d39-4b88-963c-6b8a21e0f8cb
DTSTART;TZID=Asia/Jerusalem;VALUE=DATE:20260304
DTEND;TZID=Asia/Jerusalem;VALUE=DATE:20260305
CLASS:PUBLIC
CREATED:20260129T163754
DESCRIPTION:הנכם מוזמנים להשתתף במדרשה המתמטי
ת הרביעית בנגב. זוהי הזדמנות להכיר חוקרי
ם פעילים במתמטיקה\, לשמוע הרצאות על תחום
מחקרם באווירה ידידותית\, לשוחח עימם ולשא
ול שאלות על מחקר מתמטי.\n\nהמדרשה תכלול א
רבע סדרות של הרצאות על ידי חברי סגל מהמחל
קה למתמטיקה באוניברסיטת בן-גוריון בנגב\,
וכן טיול באזור שדה בוקר (בהתאם לתנאי מזג
האוויר).
LAST-MODIFIED:20260129T163754
LOCATION:מדרשת בן-גוריון
ORGANIZER:math.bgu@bgu.ac.il
STATUS:CONFIRMED
SUMMARY:המדרשה המתמטית בנגב
URL;VALUE=URI:https://www.math.bgu.ac.il/he/research/events/midrasha26
X-ALT-DESC:
הנכם מוזמנים להשתתף ב
מדרשה המתמטית הרביעית בנגב. זוהי הזדמנות
להכיר חוקרים פעילים במתמטיקה\, לשמוע הרצ
אות על תחום מחקרם באווירה ידידותית\, לשוח
ח עימם ולשאול שאלות על מחקר מתמטי.
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המדרשה תכלול ארבע סדרות של הרצאות על יד
י חברי סגל מהמחלקה למתמטיקה באוניברסיטת
בן-גוריון בנגב\, וכן טיול באזור שדה בוקר (
בהתאם לתנאי מזג האוויר).
END:VEVENT
END:VCALENDAR