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math.AG2018
Kasteleyn operators from mirror symmetry
David Treumann, Harold Williams, Eric Zaslow
Given a consistent bipartite graph in with a complex-valued edge weighting we show the following two constructions are the same. The first is to form the Ka…
math.RT2018
Cluster theory of the coherent Satake category
Sabin Cautis, Harold Williams
We study the category of G(O)-equivariant perverse coherent sheaves on the affine Grassmannian of G. This coherent Satake category is not semisimple and its convolution product is…