User Ofra

43 votes

7 answers

13k views

Number theory and physics

asked Nov 22, 2015 at 18:35

16 votes

0 answers

603 views

K-theory and homology of groups

asked Jul 8, 2017 at 8:39

12 votes

3 answers

2k views

Undecidable easy arithmetical statement

asked Oct 31, 2017 at 21:18

11 votes

1 answer

629 views

homotopy and (co)filtered limits

asked Dec 6, 2018 at 20:23

11 votes

1 answer

866 views

Dessins d'enfants and absolute Galois group

asked Dec 1, 2015 at 13:27

11 votes

5 answers

4k views

How much do I need to learn algebraic geometry to understand arithmetics over number fields

asked Apr 7, 2016 at 22:01

9 votes

2 answers

2k views

Langlands program vs Shimura-Taniyama-Weil conjecture

asked May 3, 2016 at 12:40

8 votes

1 answer

1k views

higher algebraic homotopy groups for schemes?

asked Jan 20, 2016 at 14:48

7 votes

1 answer

4k views

Unramified extension of number fields

asked Nov 2, 2015 at 11:51

6 votes

2 answers

1k views

Automorphism group of a free product

asked Nov 18, 2015 at 1:46

6 votes

2 answers

210 views

groupring morphisms and bialgebra

asked Mar 7, 2017 at 16:59

5 votes

0 answers

204 views

homotopy type of box topology.

asked Jan 2, 2019 at 11:31

4 votes

1 answer

576 views

Bass and Quillen K-theory

asked May 25, 2017 at 11:43

4 votes

1 answer

393 views

ring structure on free abelian groups

asked Feb 15, 2017 at 20:53

3 votes

1 answer

390 views

Filtered colim of F-groups

asked Dec 5, 2020 at 15:12

3 votes

1 answer

334 views

Bisimplicial sets and homology

asked Jun 3, 2018 at 18:16

2 votes

1 answer

130 views

Reflexive coequalizer and singular functor.

asked Dec 20, 2018 at 18:03

2 votes

0 answers

227 views

lie algebra associated to a profinite group

asked Jan 3, 2017 at 21:18

2 votes

0 answers

134 views

complex numbers over algebraic numbers, continuous cohomology

asked Mar 28, 2017 at 20:11

2 votes

0 answers

345 views

Automorphism group of $\mathbf{C}$ over $\overline{\mathbf{Q}}$

asked Apr 11, 2016 at 21:50

1 vote

0 answers

881 views

Invertible elements in a group algebra

asked Feb 2, 2016 at 19:27

1 vote

2 answers

1k views

Is the absolute Galois group the same as the automorphism group? [closed]

asked Mar 15, 2016 at 14:08

0 votes

1 answer

128 views

Perfect $Q[G]$-complex

asked Dec 15, 2015 at 23:36

0 votes

0 answers

220 views

short exact sequence of profinite groups

asked Feb 24, 2017 at 20:04

0 votes

1 answer

250 views

Subgroup of free profinite group is free profinite?

asked Jan 3, 2017 at 15:21

Stack Exchange Network

25 Questions

Number theory and physics

K-theory and homology of groups

Undecidable easy arithmetical statement

homotopy and (co)filtered limits

Dessins d'enfants and absolute Galois group

How much do I need to learn algebraic geometry to understand arithmetics over number fields

Langlands program vs Shimura-Taniyama-Weil conjecture

higher algebraic homotopy groups for schemes?

Unramified extension of number fields

Automorphism group of a free product

groupring morphisms and bialgebra

homotopy type of box topology.

Bass and Quillen K-theory

ring structure on free abelian groups

Filtered colim of F-groups

Bisimplicial sets and homology

Reflexive coequalizer and singular functor.

lie algebra associated to a profinite group

complex numbers over algebraic numbers, continuous cohomology

Automorphism group of $\mathbf{C}$ over $\overline{\mathbf{Q}}$

Invertible elements in a group algebra

Is the absolute Galois group the same as the automorphism group? [closed]

Perfect $Q[G]$-complex

short exact sequence of profinite groups

Subgroup of free profinite group is free profinite?