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

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The etale site of a closed subscheme and its etale Grothendieck subtopology

There is a very basic theorem for the Zariski topology. Let X = Spec(R) and Y=Spec(R/I) for I some reduced ideal. Y obtains a topology two ways, one is the subspace topology as a subset of X and ano …
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