Abstract
Abstract Suppose C is a bounded chain complex of finitely generated free modules over the Laurent polynomial ring L = R[x,x -1]. Then C is R-finitely dominated, i.e. homotopy equivalent over R to a bounded chain complex of finitely generated projective R-modules if and only if the two chain complexes C - L R((x)) and C-L R((x-1)) are acyclic, as has been proved by Ranicki (Ranicki, Finite domination and Novikov rings, Topology 34(3) (1995), 619-632). Here R((x))=R[[x]][x -1] and R((x -1)) = R[[x -1]][x] are rings of the formal Laurent series, also known as Novikov rings. In this paper, we prove a generalisation of this criterion which allows us to detect finite domination of bounded below chain complexes of projective modules over Laurent rings in several indeterminates.
Original language | English |
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Pages (from-to) | 145-160 |
Number of pages | 16 |
Journal | Glasgow Mathematical Journal |
Volume | 55 |
Issue number | 1 |
Early online date | 2 Aug 2012 |
DOIs | |
Publication status | Published - Jan 2013 |
Keywords
- 2000 Mathematics Subject Classification Primary 55U15
- Secondary 18G35