Cyclic homology is a concept in mathematics, specifically in the field of algebraic topology and homological algebra. It generalizes the idea of homology theories and is closely related to the study of algebraic structures known as "differential graded algebras" (DGAs). Cyclic homology was introduced by the mathematician Jean Leray in the context of algebraic topology and further developed by others, particularly by Alain Connes in the 1980s.
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