User Kevin Ventullo

42 votes

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When is $n/\ln(n)$ close to an integer?

answered Jun 14, 2010 at 3:51

28 votes

Intuitive crutches for higher dimensional thinking

answered May 26, 2010 at 20:48

24 votes

The existence of non-trivial homomorphisms $\prod_{n=1}^{\infty}\mathbb{Z}/\bigoplus_{n=1}^{\infty}\mathbb{Z}\to\mathbb{Z}/p\mathbb{Z}$

answered Apr 28, 2014 at 5:41

19 votes

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The single-plus construction is not the left adjoint of the inclusion of separated presheaves?

answered Dec 15, 2010 at 6:30

17 votes

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Is every regular (excellent) scheme separated?

answered May 1, 2011 at 9:36

17 votes

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Seeking a Geometric Proof of a Generalized Alternating Series' Convergence

answered Oct 14, 2012 at 8:17

15 votes

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The Green-Tao theorem and positive binary quadratic forms

answered Jun 13, 2010 at 21:55

14 votes

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Does a graph with all vertex degrees divisible by 3 contain a cubic subgraph?

answered Nov 10, 2012 at 23:23

12 votes

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What is the spectrum of the ring of entire functions?

answered Jul 31, 2010 at 2:10

12 votes

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Free resolution dimension?

answered Jun 8, 2010 at 1:16

12 votes

Can one ignore primes lying over $l$ in the Fontaine-Mazur conjecture? Counterexamples?

answered Oct 21, 2012 at 23:04

12 votes

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Prime Decomposition in Cyclotomic Z_p-extensions

answered Sep 15, 2011 at 4:40

11 votes

What are the epimorphisms in the category of schemes?

answered Feb 25, 2011 at 0:37

11 votes

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Primes in a (commutative) Jacobson ring

answered May 23, 2010 at 7:23

11 votes

Examples where it's useful to know that a mathematical object belongs to some family of objects

answered Sep 1, 2011 at 5:05

10 votes

Where does the principal ideal theorem (from CFT) go?

answered Apr 30, 2011 at 7:17

7 votes

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Is a section of a proper map proper?

answered Oct 4, 2011 at 4:13

7 votes

Isogenous elliptic curve with integral j-invariant

answered Mar 21, 2012 at 1:22

7 votes

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Describing global sections of sheafifications

answered Jul 11, 2010 at 9:32

6 votes

Surjective implies local affine surjective?

answered Feb 13, 2011 at 19:16

6 votes

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Cardinality of the set of all paths in the infinite complete infinitary tree

answered May 23, 2010 at 6:06

6 votes

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The restriction of a global section which is not a zero divisor is still a non-zero divisor?

answered Aug 29, 2011 at 6:42

6 votes

Introduction to L-series and Dirichlet characters?

answered Jul 22, 2011 at 7:46

6 votes

Irreducibility of the $n$th symetric power of the reduction of the Galois representation of a non-CM newform

answered Mar 10, 2022 at 9:14

5 votes

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When does $P(a-b)=0$ for $a\ne b$ ensure $P(0)=0$?

answered Feb 7, 2011 at 11:00

4 votes

A Sketch of "Esquisse d'un Programme"

answered May 16, 2010 at 18:50

4 votes

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Eisenstein mod p Hilbert modular forms

answered Oct 24, 2011 at 1:33

4 votes

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Eisenstein series and overconvergence

answered Aug 24, 2011 at 17:37

4 votes

Accepted

About normal closure of cyclic subgroup

answered May 27, 2012 at 18:30

4 votes

Fields whose embeddings into the complex numbers are invariant under complex conjugation

answered May 23, 2013 at 3:10

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45 Answers

When is $n/\ln(n)$ close to an integer?

Intuitive crutches for higher dimensional thinking

The existence of non-trivial homomorphisms $\prod_{n=1}^{\infty}\mathbb{Z}/\bigoplus_{n=1}^{\infty}\mathbb{Z}\to\mathbb{Z}/p\mathbb{Z}$

The single-plus construction is not the left adjoint of the inclusion of separated presheaves?

Is every regular (excellent) scheme separated?

Seeking a Geometric Proof of a Generalized Alternating Series' Convergence

The Green-Tao theorem and positive binary quadratic forms

Does a graph with all vertex degrees divisible by 3 contain a cubic subgraph?

What is the spectrum of the ring of entire functions?

Free resolution dimension?

Can one ignore primes lying over $l$ in the Fontaine-Mazur conjecture? Counterexamples?

Prime Decomposition in Cyclotomic Z_p-extensions

What are the epimorphisms in the category of schemes?

Primes in a (commutative) Jacobson ring

Examples where it's useful to know that a mathematical object belongs to some family of objects

Where does the principal ideal theorem (from CFT) go?

Is a section of a proper map proper?

Isogenous elliptic curve with integral j-invariant

Describing global sections of sheafifications

Surjective implies local affine surjective?

Cardinality of the set of all paths in the infinite complete infinitary tree

The restriction of a global section which is not a zero divisor is still a non-zero divisor?

Introduction to L-series and Dirichlet characters?

Irreducibility of the $n$th symetric power of the reduction of the Galois representation of a non-CM newform

When does $P(a-b)=0$ for $a\ne b$ ensure $P(0)=0$?

A Sketch of "Esquisse d'un Programme"

Eisenstein mod p Hilbert modular forms

Eisenstein series and overconvergence

About normal closure of cyclic subgroup

Fields whose embeddings into the complex numbers are invariant under complex conjugation