How to glue parity sheaves

Published 19 Dec 2018 in math.AG and math.RT | (1812.07920v2)

Abstract: Let X be a stratified space on which the Juteau-Mautner-Williamson theory of parity sheaves is available. We develop a "nearby cycles formalism" in the framework of the homotopy category of parity sheaves on X, also known as the mixed modular derived category of X. This construction is expected to have applications in modular geometric representation theory.

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Pramod N. Achar

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