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math.RT2008
A topological approach to induction theorems in Springer theory
David Treumann
We give a self-contained account of a construction due to Rossmann which lifts Springer's action of a Weyl group on the cohomology of a Springer fiber to an action on its homotopy…
math.RT2008★ 5 cited
Stacks similar to the stack of perverse sheaves
David Treumann
We introduce, on a topological space X, a class of stacks of abelian categories we call "stacks of type P." This class of stacks includes the stack of perverse sheaves (of any perv…