Differential forms on singular varieties and cyclic homology

Details Differential forms on singular varieties and cyclic homology Differential forms on singular varieties and cyclic homology

1996-11-23

arxiv.org/abs/alg-geom/9611027v1

Mathematics

Algebraic Geometry

TeX, 16 pages

Scientific paper

A classical result of A. Connes asserts that the Frechet algebra of smooth functions on a smooth compact manifold X provides, by a purely algebraic procedure, the de Rham cohomology of X. Namely the procedure uses Hochschild and cyclic homology of this algebra. In the situation of a Thom-Mather stratified variety, we construct a Frechet algebra of functions on the regular part and a module of poles along the singular part. We associate to these objects a complex of differential forms and an Hochschild complex, on the regular part, both with poles along the singular part. The de Rham cohomology of the first complex and the cylic homology of the second one are related to the intersection homology of the variety, the corresponding perversity is determined by the orders of poles.

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