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math/0611623

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Title: Non-commutative Hodge-to-de Rham degeneration via the method of Deligne-Illusie
Authors: D. Kaledin
Categories: math.KT K-Theory and Homology (math.AG Algebraic Geometry; math.AT Algebraic Topology; math.RA Rings and Algebras)
Comments: Final version, to appear in F.Bogomolov's 60th anniversary volume of Pure and Applied Mathematics Quaterly. Very minor changes w.r.t the previous version

Abstract: We use a version of the method of Deligne-Illusie to prove that the Hodge-to-de Rham, a.k.a. Hochschild-to-cyclic spectral sequence degenerates for a large class of associative, not necessariyl commutative DG algebras. This proves, under some assumption, a conjecture by Kontsevich and Soibelman made in math.RA/0606241. The approach is similar to my earlier paper math.AG/0511665, but the proof is more straightforward, and the underlying algebraic topology notions are explicitly described. The paper is independent of math.AG/0511665 and in a sense, supercedes it.

Owner: Dmitry Kaledin
Version 1: Tue, 21 Nov 2006 00:04:23 GMT
Version 2: Wed, 13 Dec 2006 15:57:18 GMT
Version 3: Sat, 23 Jun 2007 18:28:36 GMT
Version 4: Fri, 30 Nov 2007 07:23:17 GMT

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