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Top Questions
33
votes
Updating Zoom in the terminal
command-line
16.04
updates
repository
zoom-meeting
asked Aug 29, 2020 at 20:10
askubuntu.com
25
votes
Reference for de Rham cohomology in positive characteristic
ag.algebraic-geometry
reference-request
schemes
characteristic-p
asked Oct 31, 2015 at 20:38
mathoverflow.net
18
votes
Independence of $\ell$ of Betti numbers
ag.algebraic-geometry
etale-cohomology
positive-characteristic
asked Mar 17, 2016 at 21:59
mathoverflow.net
18
votes
Infinite extensions such that every elliptic curve has finite rank
ag.algebraic-geometry
nt.number-theory
analytic-number-theory
elliptic-curves
l-functions
asked Jan 22, 2018 at 19:21
mathoverflow.net
15
votes
Can you use Chevalley‒Warning to prove existence of a solution?
ag.algebraic-geometry
nt.number-theory
ac.commutative-algebra
finite-fields
asked Jun 20, 2016 at 18:05
mathoverflow.net
11
votes
What are compact objects in the category of topological spaces?
ct.category-theory
gn.general-topology
compactness
asked Dec 16, 2017 at 23:13
mathoverflow.net
10
votes
Derived base change in étale cohomology
ag.algebraic-geometry
homotopy-theory
etale-cohomology
derived-categories
derived-algebraic-geometry
asked Sep 5, 2019 at 22:24
mathoverflow.net
9
votes
Global obstructions for being a quotient of a rank $d$ vector bundle
ag.algebraic-geometry
ac.commutative-algebra
asked Jan 28, 2020 at 20:06
mathoverflow.net
6
votes
Unbounded acyclic resolutions
at.algebraic-topology
ct.category-theory
homological-algebra
derived-categories
sheaf-cohomology
asked Dec 13, 2022 at 17:22
mathoverflow.net
5
votes
Is there a name for this type of poset?
elementary-set-theory
category-theory
induction
terminology
order-theory
asked Mar 25, 2018 at 2:33
math.stackexchange.com
Top Answers
49
SOS polynomials with integer coefficients
mathoverflow.net
45
Pros and cons of specializing in an esoteric research area
mathoverflow.net
38
Non-isomorphic rings that are localizations of each other
mathoverflow.net
36
How and when do I learn so much mathematics?
mathoverflow.net
36
When is the tensor product of two fields a field?
mathoverflow.net
32
Is there a relationship between a quotient group of the fundamental group of X and the fundamental group of a quotient topology of X?
mathoverflow.net
27
What spaces $X$ do have $\text{End}(X) \cong \text{End}(\mathbb{R})$?
mathoverflow.net
27
Are there any other examples where "weak" and "strong" are confused in mathematics?
mathoverflow.net
25
Is a scheme Noetherian if its topological space and its stalks are?
mathoverflow.net
25
Serre's remark on group algebras and related questions
mathoverflow.net
24
Which intrinsic invariants of a projective variety can you deduce from its Hilbert polynomials?
mathoverflow.net
24
Every mathematician has only a few tricks
mathoverflow.net
24
Learning mathematics in an "independent and idiosyncratic" way
mathoverflow.net
23
Using a known result without a specific reference
mathoverflow.net
20
The philosophy behind local rings
mathoverflow.net
20
Noncoprime polynomial values
mathoverflow.net
20
Reference - motives of curves
mathoverflow.net
20
What is the importance of modules in algebraic geometry?
math.stackexchange.com
19
How to cite authors from any country correctly?
mathoverflow.net
18
What is the geometric meaning of representability?
math.stackexchange.com
18
Abelian category with enough injectives but not functorially
mathoverflow.net
18
Is diagonalizability a local property?
mathoverflow.net
17
How do mathematicians find coauthors?
mathoverflow.net
17
What is the first cohomology $H_{fppf}^{1}(X, \alpha_{p})$?
mathoverflow.net
17
Can you give an example of two projective morphisms of schemes whose composition is not projective?
mathoverflow.net
17
When is the category of finitely presented modules abelian?
mathoverflow.net
17
Defining abstract varieties and their morphisms over a finitely generated subfield of the base field
mathoverflow.net
16
How to visualize the Frobenius endomorphism?
mathoverflow.net
16
Comparing singular cohomology with algebraic de Rham cohomology
mathoverflow.net
16
Hom / tensor adjunction for $O_X$ modules?
math.stackexchange.com
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