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# Questions

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26
1
627
views

### Is $M_g$ finitely covered by a scheme over the integers?

jun 12 at 22:50 Agol 23.9k13384

5
21
0
366
views

### Why do H_4 and M_4 have the same virtual Euler characteristic?

jun 4 11 at 18:31 Dan Petersen 10.1k12146

6
18
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1k
views

### Is the Grothendieck ring of varieties reduced?

sep 28 10 at 2:20 Chandan Singh Dalawat 11.5k13973

13
17
1
2k
views

### What’s up with Wick’s theorem?

nov 25 10 at 23:18 Theo Johnson-Freyd 22.3k227110

6
14
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541
views

### What is a self-dual category?

mar 28 12 at 9:04 Dan Petersen 10.1k12146

3
12
3
548
views

### Reference for representation theory of SL_2(Z/n)

feb 2 12 at 10:44 Guillermo Mantilla 1,299716

3
12
1
498
views

### Homotopy theory of topological stacks/orbifolds

aug 16 at 8:46 Jeffrey Giansiracusa 4,0561130

2
12
2
389
views

### Is there Harer stability for moduli of curves with level structure?

jan 18 11 at 14:58 Oscar Randal-Williams 5,15511226

2
11
0
795
views

### What do dessins tell us about the absolute Galois group?

jan 26 11 at 15:44 Dan Petersen 10.1k12146

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