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user 132
A differential graded category is a category enriched over complexes of modules for some commutative ring.
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Regarding the Gerstenhaber bracket on Hochschild cohomology and Morita equivalence
Associated to any $A_\infty$ $k$-algebra $A$ the Hochschild cochain complex $CH^*(A)$ has the structure of a dg-Lie algebra and a dg-algebra which are compatible enough that the cohomology is a Gerste …
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