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

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What are examples of "perfect tensors"?

A "perfect tensor" is defined on the nLab very abstractly as "its tensor/hom-adjuncts $V^{\otimes k} \to V^{\otimes n - k}$ for $k \le n/2$ are isometries". The only example I'm aware of is the one u …
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