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Title:
A proof of the Donaldson-Thomas crepant resolution conjecture

Speaker:
Jørgen Rennemo

Abstract:
: Let X be a Calabi-Yau 3-dimensional orbifold, and let Y be a crepant resolution of the coarse moduli space of X. When X satisfies the "hard Lefschetz condition" (that is, when the fibres of the resolution are at most 1-dimensional), the DT crepant resolution conjecture of Bryan-Cadman-Young gives a precise relation between the DT curve counts of X and Y. I will explain a proof of this conjecture via wall crossing and the motivic Hall algebra. This is joint work with Sjoerd Beentjes and John Calabrese.

Link:
https://www.msri.org/workshops/816/schedules/23872

Workshop:
MSRI- Structures in Enumerative Geometry