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Seminar
FIELD Math:Geometry
DATE November 25 (Thu), 2021
TIME 16:30-17:30
PLACE Online
SPEAKER Michael Wemyss
HOST Kim, Bumsig
INSTITUTE University of Glasgow
TITLE GW and GV invariants via the movable cone
ABSTRACT Given any smooth threefold flopping contraction, I will give a combinatorial characterisation of which Gopakumar?Vafa (GV) invariants are non-zero, and also explain how they change under iterated flop. To do this requires us to prescribe multiplicities to the walls in the movable cone. From this, I will draw (!), the critical locus of the associated quantum potential. There are various corollaries, including a visual proof of the Crepant Resolution Conjecture in this context. This is joint work with Navid Nabijou.
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