User Tom De Medts

24 votes

Order of product of group elements

answered Mar 31, 2020 at 7:54

16 votes

vector to diagonal matrix

answered Feb 18, 2011 at 7:25

15 votes

Accepted

About solvable groups

answered Mar 25, 2011 at 8:54

15 votes

The mysterious significance of local subgroups in finite group theory

answered Dec 21, 2023 at 11:27

13 votes

Accepted

Constructing $E_8$ from its branching to $A_8$

answered Jun 13, 2017 at 14:48

12 votes

Applications of Jordan algebras

answered Feb 4, 2016 at 12:47

12 votes

Accepted

For which rings $R$ is $\mathrm{SL}_n(R)$ generated by transvections?

answered Apr 4, 2011 at 9:39

12 votes

Accepted

Subgroups of groups of Square-free order

answered Mar 3, 2011 at 8:50

12 votes

Simplest examples of rings that are not isomorphic to their opposites

answered May 9, 2011 at 13:06

11 votes

rational function identity

answered Aug 31, 2011 at 13:31

11 votes

Automorphisms of non-abelian groups of order $ p^3$

answered Feb 22, 2011 at 8:29

10 votes

Accepted

Which finite projective planes can have a symmetric incidence matrix?

answered Nov 7, 2022 at 10:41

9 votes

Groups of exponent 4

answered Nov 14, 2012 at 8:49

9 votes

Accepted

What is the automorphism group of this geometry?

answered Apr 10, 2011 at 14:21

9 votes

Accepted

Question about some element in a group commutes with its all conjuagates.

answered Jun 14, 2011 at 13:40

9 votes

Spherical building of an exceptional group of Lie type

answered Dec 8, 2011 at 10:43

8 votes

quadratic forms over fields of characteristic 2

answered Mar 21, 2012 at 9:44

8 votes

Automorphism Group of some Classical groups

answered Mar 11, 2011 at 15:12

8 votes

Understanding how to construct Bruhat-Tits buildings for non-split groups by Galois descent

answered Jun 23, 2015 at 10:53

7 votes

How to prove that a quaternion algebra over ℤₚ is isomorphic to Mat₂(ℤₚ) for p prime?

answered May 25, 2022 at 9:42

7 votes

Accepted

How many permutations for each sum of digits of a number of length l? (solved but asking for insight)

answered Feb 18, 2011 at 10:45

7 votes

Accepted

Cyclic subgroups of finite abelian groups

answered Mar 30, 2012 at 12:15

7 votes

An algebra map between Hopf algebras that does not commute with the counit

answered May 10, 2023 at 14:35

6 votes

Accepted

Chirality of octonion algebras

answered Oct 5, 2023 at 7:59

6 votes

Accepted

Classification of algebraic groups of the types $^1\! A_{n-1}$ and $^2\! A_{n-1}$

answered Oct 5, 2023 at 8:09

6 votes

Cayley-Dickson form of a quaternion

answered May 5, 2011 at 9:33

6 votes

Gcd of polynomials over a finite field

answered May 20, 2016 at 15:19

6 votes

Synthetic projective lines

answered Nov 18, 2015 at 8:34

6 votes

Accepted

Conjecture on prime numbers

answered Oct 9, 2014 at 9:29

5 votes

an algebraic group where the function field is not separable over the ground field

answered May 7, 2014 at 8:02

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78 Answers

Order of product of group elements

vector to diagonal matrix

About solvable groups

The mysterious significance of local subgroups in finite group theory

Constructing $E_8$ from its branching to $A_8$

Applications of Jordan algebras

For which rings $R$ is $\mathrm{SL}_n(R)$ generated by transvections?

Subgroups of groups of Square-free order

Simplest examples of rings that are not isomorphic to their opposites

rational function identity

Automorphisms of non-abelian groups of order $ p^3$

Which finite projective planes can have a symmetric incidence matrix?

Groups of exponent 4

What is the automorphism group of this geometry?

Question about some element in a group commutes with its all conjuagates.

Spherical building of an exceptional group of Lie type

quadratic forms over fields of characteristic 2

Automorphism Group of some Classical groups

Understanding how to construct Bruhat-Tits buildings for non-split groups by Galois descent

How to prove that a quaternion algebra over ℤₚ is isomorphic to Mat₂(ℤₚ) for p prime?

How many permutations for each sum of digits of a number of length l? (solved but asking for insight)

Cyclic subgroups of finite abelian groups

An algebra map between Hopf algebras that does not commute with the counit

Chirality of octonion algebras

Classification of algebraic groups of the types $^1\! A_{n-1}$ and $^2\! A_{n-1}$

Cayley-Dickson form of a quaternion

Gcd of polynomials over a finite field

Synthetic projective lines

Conjecture on prime numbers

an algebraic group where the function field is not separable over the ground field