M. Farrokhi D. G.'s user avatar
M. Farrokhi D. G.'s user avatar
M. Farrokhi D. G.'s user avatar
M. Farrokhi D. G.
  • Member for 10 years, 6 months
  • Last seen more than 4 years ago
35 votes
3 answers
2k views

Lagrange four squares theorem

6 votes
1 answer
335 views

Rings satisfying the polynomial equation $x^4=x^2$

6 votes
2 answers
959 views

Inner product of columns of a matrix

4 votes
1 answer
812 views

On the size of centralizers in a non-abelian finite simple group

4 votes
1 answer
714 views

Graph isomorphism by invariants

3 votes
1 answer
171 views

Non-orientable genus of union of graphs

2 votes
2 answers
535 views

A quadratic Diophantine equation

2 votes
1 answer
352 views

Finding index/period of a semigroup element

1 vote
1 answer
180 views

Groups with many vanishing elements

0 votes
1 answer
125 views

Centralizers of p-elements in general linear groups