Abstract
This chapter discusses the differential graded algebras in topology. The homotopy theory of topological spaces attempts to classify weak homotopy types of spaces and homotopy classes of maps. For a given geometric problem, however, it is often sufficient to replace the homotopy theory of spaces by a weaker “algebraic” homotopy theory as described, for instance, in Baues' book. This chapter considers the specific case when spaces are modeled by the homotopy theory of differential graded algebras.
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