Topological equivalences for differential graded algebras

Details Topological equivalences for differential graded algebras Topological equivalences for differential graded algebras

2006-04-11

arxiv.org/abs/math/0604259v2

Mathematics

Algebraic Topology

Minor revisions

Scientific paper

We investigate the relationship between differential graded algebras (dgas) and topological ring spectra. Every dga C gives rise to an Eilenberg-Mac Lane ring spectrum denoted HC. If HC and HD are weakly equivalent, then we say C and D are topologically equivalent. Quasi-isomorphic dgas are topologically equivalent, but we produce explicit counter-examples of the converse. We also develop an associated notion of topological Morita equivalence using a homotopical version of tilting.

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