ℒ2-cohomologie des espaces stratifiésdes espaces stratifiés

Abstract : The first results relating intersection homology with ℒ2-cohomology were found by Cheeger, Goresky and MacPhersson (cf.[4] and [5]). The first spaces considered were the compact stratified pseudomanifolds with isolated singularities. Later, Nagase extended this result to any compact stratified spaceA possessing a Cheeger type riemannian metric μ (cf. [12]). The proof of the isomorphism H∗(2)(A−Σ,μ)≅IHpˉ∗(A) uses the axiomatic caractérisation of the intersection homology of [2]. In this work we show how to realize this isomorphism by the usual integration of differential forms on simplices. The main tool used is the blow up of A into a smooth manifold, introduced in [2]. We also prove that any stratified space possesses a Cheeger type riemannian metric.
Type de document :
Article dans une revue
manuscripta mathematica, Springer Verlag, 1992, 76, pp.21-32
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Contributeur : Martintxo Saralegi-Aranguren <>
Soumis le : vendredi 4 octobre 2013 - 22:27:45
Dernière modification le : jeudi 15 mars 2018 - 10:31:31


  • HAL Id : hal-00870098, version 1


Jean-Paul Brasselet, Gilbert Hector, Martintxo Saralegi-Aranguren. ℒ2-cohomologie des espaces stratifiésdes espaces stratifiés. manuscripta mathematica, Springer Verlag, 1992, 76, pp.21-32. 〈hal-00870098〉



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