Publication details

Constructing homotopy equivalences of chain complexes of free ZG-modules

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Year of publication 2014
Type Article in Proceedings
Conference An Alpine Expedition through Algebraic Topology
MU Faculty or unit

Faculty of Science

Field General mathematics
Keywords chain complex; homotopy module; reduction; homotopy equivalence; transfer
Description We describe a general method for algorithmic construction of G-equivariant chain homotopy equivalences from non-equivariant ones. As a consequence, we obtain an algorithm for computing equivariant (co)homology of Eilenberg-MacLane spaces K(pi,n), where pi is a finitely generated ZG-module. The results of this paper will be used in a forthcoming paper to construct equivariant Postnikov towers of simply connected spaces with free actions of a finite group $G$ and further to compute stable equivariant homotopy classes of maps between such spaces. The methods of this paper work for modules over any non-negatively graded differential graded algebra, whose underlying graded abelian group is free with 1 as one of the generators.
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