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SUMMARY:Merlin Christ (University of Hamburg\, Germany)
DTSTART:20210204T120000Z
DTEND:20210204T130000Z
DTSTAMP:20260423T005755Z
UID:LAGOON/30
DESCRIPTION:Title: <a href="https://researchseminars.org/talk/LAGOON/30/">
 A gluing construction for Ginzburg algebras of triangulated surfaces</a>\n
 by Merlin Christ (University of Hamburg\, Germany) as part of Longitudinal
  Algebra and Geometry Open ONline Seminar (LAGOON)\n\n\nAbstract\nGinzburg
  algebras associated to triangulated surfaces are a class of 3-Calabi-Yau 
 dg-algebras which categorify the cluster algebras of the underlying marked
  surfaces. In this talk\, we will discuss a description of these Ginzburg 
 algebras in terms of the global sections of a constructible cosheaf of dg-
 categories (modelling a perverse Schober). This cosheaf description shows 
 that the Ginzburg algebras arise via the gluing of relative versions of Gi
 nzburg algebras associated to the faces of the triangulation along their c
 ommon edges. The definition of the cosheaf is inspired by a result of Ivan
  Smith\, by which the finite derived category of such a Ginzburg algebra e
 mbeds into the Fukaya category of a Calabi-Yau 3-fold equipped with a Lefs
 chetz fibration to the surface.\n
LOCATION:https://researchseminars.org/talk/LAGOON/30/
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