41

Questions

1
10
votes
0
answers
270
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Is there a non-quotient stack with affine stabilizers whose good moduli space is a geometric point?

feb 28 11 at 0:05 David Zureick-Brown 6,0641041

9
10
votes
6
answers
3k
views

How do you show that $S^{\infty}$ is contractible?

mar 25 at 22:04 SuperDave 111

 
10
votes
2
answers
408
views

Can Hom_gp(G,H) fail to be representable for affine algebraic groups?

aug 10 at 19:24 Anton Geraschenko♦♦ 13.7k348108

4
10
votes
3
answers
719
views

Motivation for uniform surjectivity of mod l representations associated to elliptic curves

aug 23 10 at 16:30 Chris Wuthrich 1,775611

1
9
votes
1
answer
621
views

When is an Albanese variety principally polarized?

dec 1 09 at 1:54 Tony Pantev 3,94011119

3
9
votes
2
answers
876
views

Is the Torelli map an immersion?

dec 19 09 at 18:15 VA 8,2202244

8
9
votes
3
answers
1k
views

What is interesting/useful about big Witt Vectors?

jan 1 10 at 12:08 Chandan Singh Dalawat 11.4k13973

7
9
votes
2
answers
882
views

Are curves with `fractional points' uniquely determined by their residual gerbes?

oct 29 09 at 3:05 Anton Geraschenko♦♦ 13.7k348108

3
9
votes
2
answers
643
views

Can a singular Deligne-Mumford stack have a smooth coarse space?

jan 3 10 at 21:22 shenghao 2,653523

3
8
votes
3
answers
671
views

Does Ribet’s level lowering theorem hold for prime powers?

feb 6 10 at 19:09 Soroosh 59836

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