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26
Hom(A,C) ⊗ Hom(B,D) injects into Hom(A⊗B,C⊗D): when? why?
19
Affine scheme on spec(A) of a ring A as the sheafification of a pre-sheave on spec(A)?
11
Is $H^i(X,F)$ finitely generated over $\Gamma(O_X)$ if $F$ is coherent?
9
For any $n$, does there exist a number field with at least $n$ solutions to the unit equation
9
Endomorphisms of vector bundles
8
Existence of projective resolutions in abelian categories
8
Why is the identity element of a group denoted by $e$?
7
reduced ⊗ reduced = reduced; what about connected?
7
two conjugate subgroups and one is a proper subset of the other? plus, a covering space interpretation.
7
Does a regular pair of elements in a noetherian domain remain regular if their order is switched?
6
degree 0 vector bundles
6
Does every nontrivial sheaf of rings have a maximal ideal?
6
Ultraproduct $\prod_p \mathbb{F}_p/\sim$ and $\mathbb{Q}^*$
6
Do the solutions to the unit equation lie dense in the complex numbers
5
Are injective quasi-coherent modules acyclic?
5
Is a reduced, torsion-free module of finite rank over an Henselian ring free?
5
Can different modules have the same symmetric algebra? (answered: no)
5
Line bundles on fibrations
5
Is the support of an Artinian module finite?
5
References to SGA 8 and descent theory
4
Quotient of flat module is flat - a property in Mumford’s Red book
4
Cohomology of fixed point subspaces
4
Is the transcendence degree of a domain over a subfield the same as that of the fraction field of that domain?
4
On the functoriality of scalar extensions of local rings (edited)
4
Question on a projective bundle associated to a vector bundle
4
Infinite products of representations of the additive group
3
Criterions for Reflexiveness of sheaves and a special case
3
flatness condition for local noetherian ring without nilpotent elements
3
eigen-bundles of a trivial vector bundle
3
When is tensoring with a module representable by a scheme?
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