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{\Large Department of Mathematics, BGU}

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{\Huge Colloquium}\\[0.2\baselineskip]

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\textbf{On} \emph{Wednesday, July  1, 2026}
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\textbf{At} \emph{12:30 -- 13:30}
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\textbf{In} \emph{Math -101}

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{\large\scshape Misha Verbitsky 
  %
  (IMPA)
}
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will talk about
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{\Large\bfseries GAGA theorem for quasihomogeneous singularities\par}
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\textsc{Abstract:}
In 1956, J.-P. Serre published the famous paper
``Géométrie algébrique et géométrie analytique'', showing
that most complex analytic objects (such as subvarieties,
meromorphic functions, coherent sheaves), if defined
on algebraic varieties, arise from their counterparts
which are defined algebraically. Now this result is
known as GAGA theorem. A complex variety is
called quasi-homogeneous if it is equipped with an
invertible complex analytic contraction. I will show
that this contraction defines a canonical algebraic
structure on this variety, bringing on the rest of
the GAGA framework. This is a joint work with Liviu Ornea.





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{\bfseries Please Note the Unusual Day and Time!}
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