Intersection homology with general perversities
نویسنده
چکیده
We study intersection homology with general perversities that assign integers to stratum components with none of the classical constraints of Goresky and MacPherson. We extend Goresky and MacPherson’s axiomatic treatment of Deligne sheaves, and use these to obtain Poincaré and Lefschetz duality results for these general perversities. We also produce versions of both the sheaf-theoretic and the piecewise linear chaintheoretic intersection pairings that carry no restrictions on the input perversities. 2000 Mathematics Subject Classification: Primary: 55N33, 57N80; Secondary: 55N45, 55N30, 57P10
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تاریخ انتشار 2010