A curious example of two model categories and some associated differential graded algebras

Details A curious example of two model categories and some associated differential graded algebras A curious example of two model categories and some associated differential graded algebras

2007-10-16

arxiv.org/abs/0710.3070v1

Mathematics

Algebraic Topology

Scientific paper

The paper gives a new proof that the model categories of stable modules for the rings Z/(p^2) and (Z/p)[\epsilon]/(\epsilon^2) are not Quillen equivalent. The proof uses homotopy endomorphism ring spectra. Our considerations lead to an example of two differential graded algebras which are derived equivalent but whose associated model categories of modules are not Quillen equivalent. As a bonus, we also obtain derived equivalent dgas with non-isomorphic K-theories.

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