General perversities and L^2 de Rham and Hodge theorems for stratified pseudomanifolds

Details General perversities and L^2 de Rham and Hodge theorems for stratified pseudomanifolds General perversities and L^2 de Rham and Hodge theorems for stratified pseudomanifolds

2011-07-20

arxiv.org/abs/1107.3972v1

Mathematics

Differential Geometry

Scientific paper

Given a compact stratified pseudomanifold with a Thom-Mather stratification and a class of riemannian metrics over its regular part, we study the relationships between the $L^{2}$ de Rham and Hodge cohomology and the intersection cohomology of $X$ associated to some perversities. More precisely, to a kind of metric which we call \emph{quasi edge with weights}, we associate two general perversities in the sense of G. Friedman, $p_{g}$ and its dual $q_{g}$. We then show that the absolute $L^{2}$ Hodge cohomology is isomorphic to the maximal $L^{2}$ de Rham cohomology and this is in turn isomorphic to the intersection cohomology associated to the perversity $q_{g}$. Moreover we prove that the relative $L^{2}$ Hodge cohomology is isomorphic to the minimal $L^{2}$ de Rham cohomology and this is in turn isomorphic to the intersection cohomology associated to the perversity $p_{g}$.

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