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Intersection cohomology of S^1-actions

Abstract : In this work we shall consider smooth action of S^1 on a manifold M. We exhibit a Gysin sequence relating the cohomology of M with the intersection cohomology of the orbit space M/S^1. This generalizes the usual Gysin sequence associated with a free action of S^1. We also study the vanishiing of the assocaied Euler class.
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Contributor : Martintxo Saralegi-Aranguren Connect in order to contact the contributor
Submitted on : Thursday, December 10, 2009 - 2:34:00 PM
Last modification on : Saturday, September 24, 2022 - 3:36:05 PM
Long-term archiving on: : Thursday, October 18, 2012 - 10:36:19 AM


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  • HAL Id : hal-00440356, version 1


Gilbert Hector, Martintxo Saralegi-Aranguren. Intersection cohomology of S^1-actions. Transactions of the American Mathematical Society, 1993, 33!, pp.263-288. ⟨hal-00440356⟩



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