User Hej - MathOverflow

Hej

Member for 14 years, 2 months
Last seen more than 8 years ago

Network profile

10 Questions

Score Activity Newest Views

26 votes

2 answers

1k views

Primitive roots

asked Jan 28, 2011 at 1:22

21 votes

2 answers

3k views

Integer matrices with no integer eigenvalues

asked May 15, 2010 at 22:45

19 votes

3 answers

2k views

Is the semigroup of nonnegative integer matrices with determinant 1 finitely generated?

asked May 10, 2010 at 18:48

15 votes

4 answers

847 views

Is there a matrix C so that the trace of C^n is dense in R?

asked Feb 11, 2010 at 22:16

11 votes

1 answer

403 views

Symmetric functions on three parameters being perfect squares

asked Apr 17, 2012 at 17:56

4 votes

1 answer

1k views

A random walk on natural numbers

asked Feb 15, 2011 at 17:16

3 votes

0 answers

224 views

Kakeya sets on surfaces

asked Jun 8, 2012 at 19:26

1 vote

1 answer

582 views

Cycle double covering of cubic graphs

asked Jun 4, 2012 at 0:58

1 vote

1 answer

397 views

Transitive Semigroups of $2\times 2$ matrices

asked Nov 11, 2010 at 18:04

-1 votes

1 answer

238 views

Complements of images of complex analytic sets

asked May 29, 2014 at 19:19