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Enriched categories, topoi, abelian categories, monoidal categories, homological algebra.

2 votes
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513 views

Brutal truncation of indecomposable complexes

Let $P^{\bullet} = (P^i, d^i)_{i\leq 0}$ be an indecomposable object in category of complexes bounded above, where each $P_i$ is a finitely generated projective module over an finite dimensional algeb …