Geometry in the Spring A mini-conference on geometry in Ben Gurion University of the Negev Tuesday, May 21st, 2019 Ben Gurion University, Marcus campus, Beer Sheva, Deichmann Bldg. (58), Seminar Room -101. Program 11:00-11:30 Gathering and light refreshments 11:30-12:30 Ran Tessler (Weizmann Institute of Science), "The open Arf invariant and stratifications of moduli spaces of surfaces with boundary". 12:30-14:00 Lunch 14:00-16:15 Award ceremony in honor of Noriko Sakurai and Hillel Gauchman. Honorary speaker: Sergey Fomin (University of Michigan, Ann Arbor), "Cluster Transformations". 16:40-17:40 Eugenii Shustin (Tel Aviv University), "Refined enumerative tropical geometry". Organizers: Prof. Miriam Cohen (Ben Gurion University), Prof. Daniel Sternheimer (Rikkyo University, Institut de Mathematiques de Bourgogne), Dr. Inna Entova-Aizenbud (Ben Gurion University). The award ceremony will be held in the presence of Prof. Daniel Sternheimer and Ms. Julia Gauchman. Contact email: entova [at] bgu.ac.il The conference is supported by the Center for Advanced Studies in Mathemaics, and by the Department of Mathematics, Ben Gurion University. If you are interested in attending, please register here (no registration fee required); when registering, you can also aks for a car entrance permit.