A Stasinski's user avatar
A Stasinski's user avatar
A Stasinski's user avatar
A Stasinski
  • Member for 14 years, 4 months
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21 votes
2 answers
669 views

Does $\mathrm{SL}_{n}(\mathbb{Z}/p^{2})$ have the same number of conjugacy classes as $\mathrm{SL}_{n}(\mathbb{F}_{p}[t]/t^{2})$?

9 votes
1 answer
1k views

Is there a non-smooth algebraic group scheme in char $p$, all of whose defining relations have degree less than $p$?

7 votes
0 answers
573 views

Generating functions for certain statistics on Coxeter groups of type B

7 votes
1 answer
801 views

Is the classification of supercuspidal representations a wild problem?

7 votes
2 answers
784 views

Lie algebras and non-smoothness of centralisers in bad characteristic

6 votes
1 answer
1k views

Group scheme over a DVR whose special fibre is the image of points under reduction mod p

6 votes
0 answers
358 views

Is there a Dedekind domain which has infinite class group and is free of finite rank over a finite quotient PID?

6 votes
1 answer
2k views

Real integral which cannot be evaluated without complex analysis?

5 votes
1 answer
279 views

The Kronecker--Hurwitz property for rings of integers in global function fields

5 votes
0 answers
180 views

Effective Nullstellensatz and bounds on the nilpotency index of reduced ideal together with linear forms

4 votes
0 answers
58 views

Is there a $3\times 3$ matrix over a Dedekind domain not similar to a matrix with zero top right entry?

3 votes
0 answers
251 views

Schematic closure of maximal torus over a discrete valuation ring: smoothness of the special fibre

3 votes
1 answer
199 views

Borel subgroups of centralisers of Lie algebra elements in bad characteristic

3 votes
2 answers
1k views

Connectedness of centralizers and regular elements in unipotent groups