User Tom De Medts

5 votes

Where is number theory used in the rest of mathematics?

answered May 11, 2012 at 9:57

5 votes

The integral closure $\overline{\mathbb{Z}}$ and the group $\overline{\mathbb{Z}}^{\times}$

answered May 7, 2021 at 7:34

5 votes

Any good reference for Tits Building?

answered Aug 31, 2011 at 9:14

5 votes

On special 2-groups

answered Mar 14, 2011 at 14:25

5 votes

Classifications of finite simple objects

answered Apr 4, 2011 at 8:58

5 votes

Coxeter group generators

answered Mar 1, 2011 at 10:45

4 votes

Accepted

The Symmetry of Steiner System S(5,8,24)

answered Nov 29, 2011 at 17:03

4 votes

Orthogonal Groups over finite fields

answered Jun 11, 2014 at 7:58

4 votes

Group representation with algebra structure

answered Nov 21, 2019 at 9:17

4 votes

Accepted

Is a graph with edges between edges and nodes still a graph?

answered Nov 22, 2019 at 10:37

4 votes

What is a (generalized) BN-pair?

answered Jun 27, 2012 at 13:56

4 votes

Accepted

article by Jacques Tits about automorphism group of a locally finite tree

answered Sep 20, 2012 at 10:40

4 votes

The prime number $2$

answered May 3, 2013 at 11:42

4 votes

Accepted

Examples of non-discrete, cocompact subgroups

answered Oct 10, 2023 at 8:36

4 votes

$(2^a-1)+b^2=2^c$

answered Oct 10, 2023 at 8:59

4 votes

Accepted

Subfields of division rings of degree $2$ which are not invariant

answered Sep 18, 2023 at 9:07

4 votes

Ree groups and Moufang octagons

answered Apr 27, 2023 at 10:35

3 votes

Moufang identities and Moufang plane

answered Jul 19, 2023 at 9:34

3 votes

Accepted

Example of a finite group

answered May 27, 2013 at 8:44

3 votes

Accepted

Maximal split torus of universal chevalley group

answered Jan 12, 2016 at 13:57

3 votes

Results in the Presentation of Finite Groups

answered Mar 8, 2012 at 9:03

3 votes

Heisenberg-type groups over rings with involution

answered Jun 11, 2012 at 12:13

3 votes

Accepted

finite dimensional modules are highest weight modules

answered Nov 6, 2018 at 10:24

3 votes

Accepted

How to classify homomorphisms from $\operatorname{PSL}(2,p)$ to $\operatorname{PGL}(n,2)$ when $2^n=p+1$?

answered Dec 1, 2022 at 15:45

3 votes

Accepted

Source for: a permutation group is multiplicity-free if and only if its 2-orbits define an association scheme

answered Feb 24, 2021 at 13:16

3 votes

Accepted

Characterizing the set of self-orthogonal complex vectors

answered Nov 30, 2011 at 12:56

3 votes

"Résumé de cours" by Jacques Tits

answered Mar 20, 2011 at 22:10

3 votes

Looking for interesting actions that are not representations

answered Feb 23, 2011 at 10:14

2 votes

Extremely messy proofs

answered Mar 16, 2011 at 7:38

2 votes

What's the difference between 2 and 3?

answered Apr 18, 2011 at 15:30

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78 Answers

Where is number theory used in the rest of mathematics?

The integral closure $\overline{\mathbb{Z}}$ and the group $\overline{\mathbb{Z}}^{\times}$

Any good reference for Tits Building?

On special 2-groups

Classifications of finite simple objects

Coxeter group generators

The Symmetry of Steiner System S(5,8,24)

Orthogonal Groups over finite fields

Group representation with algebra structure

Is a graph with edges between edges and nodes still a graph?

What is a (generalized) BN-pair?

article by Jacques Tits about automorphism group of a locally finite tree

The prime number $2$

Examples of non-discrete, cocompact subgroups

$(2^a-1)+b^2=2^c$

Subfields of division rings of degree $2$ which are not invariant

Ree groups and Moufang octagons

Moufang identities and Moufang plane

Example of a finite group

Maximal split torus of universal chevalley group

Results in the Presentation of Finite Groups

Heisenberg-type groups over rings with involution

finite dimensional modules are highest weight modules

How to classify homomorphisms from $\operatorname{PSL}(2,p)$ to $\operatorname{PGL}(n,2)$ when $2^n=p+1$?

Source for: a permutation group is multiplicity-free if and only if its 2-orbits define an association scheme

Characterizing the set of self-orthogonal complex vectors

"Résumé de cours" by Jacques Tits

Looking for interesting actions that are not representations

Extremely messy proofs

What's the difference between 2 and 3?