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Ben
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9 Answers

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2 votes
Accepted

Construction of a line bundle from a class $[\alpha] \in H^1(X, \mathcal{O}_X^{\times})$ as $\mathcal{O}_X^{\times}$-Torsor

5 votes

Some interesting and elementary topics with connections to the representation theory?

4 votes
Accepted

Moishezon manifold vs proper complex variety

4 votes

Model category of diagrams with the colimit detecting the weak equivalences

5 votes

Non trivial vector bundle over non-paracompact contractible space

9 votes
Accepted

Is Lemma D4.5.3 in the Elephant correct? (“In a topos, weakly projective implies internally projective.”)

5 votes
Accepted

Every finitely generated flat module over a ring with finitely many minimal primes is projective

11 votes
Accepted

Trivialisation of vector bundles on Stein spaces

5 votes

Two infinite dimensional algebras such that the center of their tensor product is bigger than the tensor product of their centers