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A Parameterization of D equivalences of coherent sheaves of symplectic resolutions of a given symplectic singularity

Research paper by Dorin Boger

Indexed on: 15 Jan '16Published on: 15 Jan '16Published in: Mathematics - Algebraic Geometry



Abstract

Let G be a reductive groups over an algebraically closed field k. Let P^{(i)} be associated parabolic subgroups, and X^{(i)}:=T^*G/P^i. The bounded derived categories of coherent sheaves on X^{(i)} are equivalent, but there is no canonical equivalence. By refining a construction from a previous paper, we construct a local system of categories over a topological space V^0_C, where these categories are assigned to different points in V^0_C. Natural equivalence functors between these categories are parameterized by homotopy classes of paths between the corresponding points.