User Hugo Chapdelaine

50 votes

6 answers

11k views

Generating finite simple groups with $2$ elements

asked Mar 22, 2011 at 18:09

29 votes

2 answers

2k views

A simple proof that parallelizable oriented closed manifolds are oriented boundaries?

asked Mar 7, 2014 at 23:31

23 votes

2 answers

7k views

Geometrical meaning of semi-stable reduction?

asked Nov 21, 2011 at 13:50

20 votes

2 answers

683 views

non-isomorphic stably isomorphic fields

asked May 12, 2012 at 15:01

20 votes

4 answers

3k views

homotopy type of connected Lie groups

asked Jan 24, 2011 at 16:49

18 votes

1 answer

2k views

On the inverse Galois problem

asked Jul 12, 2011 at 17:39

17 votes

1 answer

2k views

Looking for a simple proof that R^2 has only one smooth structure

asked Mar 14, 2011 at 21:45

17 votes

1 answer

1k views

On the Hasse-Weil L-function of $P^n$

asked May 21, 2012 at 1:42

14 votes

2 answers

4k views

How to compute the cohomology of the general linear group with integral entries

asked Mar 2, 2011 at 23:38

12 votes

4 answers

916 views

non-trivial zeros of partial zeta functions

asked May 17, 2012 at 0:46

12 votes

1 answer

777 views

Intersection of a ring class field of a quadratic field K with the cyclotomic extension of K

asked Oct 13, 2014 at 22:16

11 votes

3 answers

1k views

Deformation theory over the field of algebraic numbers

asked Dec 30, 2010 at 3:46

10 votes

2 answers

1k views

Finite unramified analytic coverings vs finite etale coverings

asked Dec 25, 2010 at 18:06

10 votes

2 answers

1k views

On the field of invariants of a finite group

asked Jun 29, 2011 at 0:30

10 votes

2 answers

3k views

Cohomology of complete intersections

asked Nov 1, 2011 at 18:10

10 votes

2 answers

701 views

non-artificial examples of non-smooth and non-admissible representations of GL_2

asked Oct 7, 2012 at 10:08

10 votes

2 answers

1k views

What is the discriminant divisor of a surface fibered over a curve?

asked May 30, 2013 at 22:58

9 votes

2 answers

1k views

On Grothendieck's period relations

asked Jun 16, 2012 at 14:01

9 votes

0 answers

2k views

Homotopy groups of a Bouquet of n-spheres

asked Mar 14, 2012 at 19:01

9 votes

2 answers

1k views

On rational functions with rational power series

asked Jan 22, 2011 at 17:43

9 votes

2 answers

3k views

Is there a Riemann-Roch for smooth projective curves over an arbitrary field?

asked Feb 14, 2011 at 22:06

9 votes

1 answer

650 views

Neron models of elliptic curves with level N structure?

asked Jan 5, 2011 at 22:08

8 votes

2 answers

7k views

On the fundamental group of a finite CW complex

asked Mar 6, 2011 at 17:51

7 votes

1 answer

632 views

Smooth and analytic structures on low dimensional euclidian spaces

asked Jan 20, 2011 at 13:56

7 votes

2 answers

751 views

Looking for deterministic criteria to generate the symmetric group?

asked Mar 21, 2011 at 18:12

7 votes

1 answer

679 views

looking for a multiplicity one prime in a finite sum

asked Mar 26, 2011 at 12:45

7 votes

1 answer

670 views

Given an odd integer N find the smalletst prime p > N such that (p-1,N)=1

asked Mar 28, 2011 at 13:07

7 votes

2 answers

971 views

On rational points of conics

asked Aug 6, 2011 at 15:04

7 votes

0 answers

430 views

The maximal order of an element in orthogonal groups over finite fields of characteristic 2

asked Aug 30, 2011 at 19:02

7 votes

0 answers

673 views

Explicit family of generalized elliptic curves with level n structure

asked Sep 10, 2013 at 21:41

Stack Exchange Network

128 Questions

Generating finite simple groups with $2$ elements

A simple proof that parallelizable oriented closed manifolds are oriented boundaries?

Geometrical meaning of semi-stable reduction?

non-isomorphic stably isomorphic fields

homotopy type of connected Lie groups

On the inverse Galois problem

Looking for a simple proof that R^2 has only one smooth structure

On the Hasse-Weil L-function of $P^n$

How to compute the cohomology of the general linear group with integral entries

non-trivial zeros of partial zeta functions

Intersection of a ring class field of a quadratic field K with the cyclotomic extension of K

Deformation theory over the field of algebraic numbers

Finite unramified analytic coverings vs finite etale coverings

On the field of invariants of a finite group

Cohomology of complete intersections

non-artificial examples of non-smooth and non-admissible representations of GL_2

What is the discriminant divisor of a surface fibered over a curve?

On Grothendieck's period relations

Homotopy groups of a Bouquet of n-spheres

On rational functions with rational power series

Is there a Riemann-Roch for smooth projective curves over an arbitrary field?

Neron models of elliptic curves with level N structure?

On the fundamental group of a finite CW complex

Smooth and analytic structures on low dimensional euclidian spaces

Looking for deterministic criteria to generate the symmetric group?

looking for a multiplicity one prime in a finite sum

Given an odd integer N find the smalletst prime p > N such that (p-1,N)=1

On rational points of conics

The maximal order of an element in orthogonal groups over finite fields of characteristic 2

Explicit family of generalized elliptic curves with level n structure