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A new construction of cyclic homology

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Title: A new construction of cyclic homology
Authors: Ginzburg, V
Schedler, TJ
Item Type: Journal Article
Abstract: Based on the ideas of Cuntz and Quillen, we give a simple construction of cyclic homology of unital algebras in terms of the noncommutative de Rham complex and a certain differential similar to the equivariant de Rham differential. We describe the Connes exact sequence in this setting. We define equivariant Deligne cohomology and construct, for each 𝑛⩾1 , a natural map from cyclic homology of an algebra to the GL𝑛 ‐equivariant Deligne cohomology of the variety of 𝑛 ‐dimensional representations of that algebra. The bridge between cyclic homology and equivariant Deligne cohomology is provided by extended cyclic homology, which we define and compute here, based on the extended noncommutative de Rham complex introduced previously by the authors.
Issue Date: 8-Mar-2016
Date of Acceptance: 13-Dec-2015
URI: http://hdl.handle.net/10044/1/28611
DOI: 10.1112/plms/pdw001
ISSN: 0024-6115
Publisher: London Mathematical Society
Start Page: 549
End Page: 587
Journal / Book Title: Proceedings of the London Mathematical Society
Volume: 112
Issue: 3
Copyright Statement: © 2015 London Mathematical Society.
Sponsor/Funder: National Science Foundation
Funder's Grant Number: DMS-1406553
Keywords: 0101 Pure Mathematics
0104 Statistics
Publication Status: Published
Online Publication Date: 2016-03-08
Appears in Collections:Pure Mathematics
Faculty of Natural Sciences
Mathematics