Tom De Medts's user avatar
Tom De Medts's user avatar
Tom De Medts's user avatar
Tom De Medts
  • Member for 13 years, 1 month
  • Last seen this week
35 votes
1 answer
2k views

Order-increasing bijection from arbitrary groups to cyclic groups

24 votes
2 answers
1k views

Nilpotency of a group by looking at orders of elements

17 votes
4 answers
2k views

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

15 votes
3 answers
4k views

Connectedness of the linear algebraic group SO_n

13 votes
2 answers
791 views

Groups with triple system of self-normalizing subgroups

12 votes
1 answer
912 views

Non-isomorphic two-transitive permutation groups with isomorphic point stabilizers

11 votes
1 answer
1k views

Divisibility and factorization in rings that are not integral domains

9 votes
2 answers
426 views

Embedding $\mathrm{PGL}(n,q^h)$ in $\mathrm{PGL}(nh,q)$

7 votes
2 answers
1k views

Recovering n from sigma(n)/n

6 votes
0 answers
222 views

Group homomorphism from $\mathrm{GL}_p$ to $\mathrm{SL}_p$ in characteristic $p$

5 votes
1 answer
459 views

Unipotent radical of minimal parabolic subgroup of a unitary group over an arbitrary field

5 votes
3 answers
1k views

adjoint of multiplication operator in a commutative algebra

4 votes
1 answer
439 views

Finding groups of odd order without non-cyclic nilpotent quotients

3 votes
1 answer
300 views

ABA-product of matrices and length of chains of principal inner ideals

3 votes
0 answers
90 views

Projective limit of copies of same group w.r.t. some fixed endomorphism

3 votes
2 answers
910 views

Skew fields inside quaternion division algebras

1 vote
2 answers
222 views

Invertibility of all left multiplication maps in non-unital rings