User X--- - MathOverflow

X---

Member for 13 years, 7 months

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6 Questions

Score Activity Newest Views

4 votes

1 answer

548 views

a simple combinatorial problems

asked May 11, 2011 at 9:06

3 votes

1 answer

695 views

a simple problems about Yetter-Drinfeld-Module

asked May 19, 2011 at 15:48

1 vote

0 answers

247 views

Annulator of Tensor Power in a Quantum Group

asked May 26, 2011 at 2:45

1 vote

0 answers

156 views

There is nonzero primitive element in finite dimensional pointed hopf algebra over C???

asked Oct 7, 2011 at 14:01

0 votes

2 answers

291 views

Dimension of a Hopf algebra == sum of squares of its simple modules? [closed]

asked Sep 4, 2011 at 6:32

0 votes

1 answer

256 views

ask for a simple bijective proof about oriented increasing binary trees

asked May 11, 2011 at 13:56