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SUMMARY:Refined curve counting\, quivers\, and wall-crossing 
DTSTART:20130410T141500
DTEND:20130410T160000
DTSTAMP:20260609T084012Z
UID:3d4a619c115a088daaa1525644a932d22b8af6b7f78f79214037058d
CATEGORIES:Conferences - Seminars
DESCRIPTION:Jacopo Stoppa\, University of Pavia\nIn the first part of the 
 talk I will sketch some aspects of an interesting Gromov-Witten theory on 
 weighted projective planes introduced by Gross\, Pandharipande and Siebert
 . It admits a very special expansion in terms of tropical counts (called t
 he tropical vertex)\, as well as a conjectural BPS structure. In the secon
 d part I will describe a refinement or "q-deformation" of the expansion us
 ing Block-Goettsche invariants\, motivated by wall-crossing ideas. This le
 ads naturally to a definition of a class of putative q-deformed curve coun
 ts. We prove that this coincides with another natural q-deformation\, prov
 ided by a result of Reineke and Weist in the context of quiver representat
 ions\, when the latter is well defined (joint with S. A. Filippini).
LOCATION:CM09  http://plan.epfl.ch/?zoom=19&recenter_y=5864183.35306&recen
 ter_x=730928.59101&layerNodes=fonds\,batiments\,labels\,events_surface\,ev
 ents_line\,events_label\,information\,parkings_publics\,arrets_metro\,even
 em
STATUS:CONFIRMED
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