Sangam: A Confluence of Knowledge Streams

Equivariant K-theory and Resolution I: Abelian Actions

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dc.contributor Massachusetts Institute of Technology. Department of Mathematics
dc.creator Dimakis, P
dc.creator Melrose, R
dc.date 2021-11-05T15:10:06Z
dc.date 2021-11-05T15:10:06Z
dc.date 2020
dc.date 2021-05-24T17:49:57Z
dc.date.accessioned 2023-03-01T18:05:01Z
dc.date.available 2023-03-01T18:05:01Z
dc.identifier https://hdl.handle.net/1721.1/137509
dc.identifier Dimakis, P and Melrose, R. 2020. "Equivariant K-theory and Resolution I: Abelian Actions." 333.
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/278681
dc.description © 2020, Springer Nature Switzerland AG. The smooth action of a compact Lie group on a compact manifold can be resolved to an iterated space, as made explicit by Pierre Albin and the second author. On the resolution the lifted action has fixed isotropy type, in an iterated sense, with connecting fibrations and this structure descends to a resolution of the quotient. For an Abelian group action the equivariant K-theory can then be described in terms of bundles over the base with morphisms covering the connecting maps. A similar model is given, in terms of appropriately twisted deRham forms over the base as an iterated space, for delocalized equivariant cohomology in the sense of Baum, Brylinski and MacPherson. This approach allows a direct proof of their equivariant version of the Atiyah–Hirzebruch isomorphism.
dc.format application/pdf
dc.language en
dc.publisher Springer International Publishing
dc.relation 10.1007/978-3-030-34953-0_5
dc.rights Creative Commons Attribution-Noncommercial-Share Alike
dc.rights http://creativecommons.org/licenses/by-nc-sa/4.0/
dc.source arXiv
dc.title Equivariant K-theory and Resolution I: Abelian Actions
dc.type Book chapter
dc.type http://purl.org/eprint/type/BookItem


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