Filtered moment graph sheaves

Published 23 Aug 2015 in math.RT | (1508.05579v1)

Abstract: We introduce the notion of (co-)filtered sheaves on quotients of moment graphs by a group action. We then introduce a (co-)filtered version of the canonical sheaves of Braden and MacPherson and show that their global sections are the indecomposable projective objects in a suitably defined exact category.

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