A Remark on Closed Noncommutative Subspaces
classification
🧮 math.AG
math.RA
keywords
closedsubspacesarbitrarygeneratorposetabeliancategorycollection
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Given an abelian category with arbitrary products, arbitrary coproducts, and a generator, we show that the closed subspaces (in the sense of A. L. Rosenberg) are parameterized by a suitably defined poset of ideals in the generator. In particular, the collection of closed subspaces is itself a small poset.
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