26

Questions
votes newest views recent
 
0
votes
1
answer
121
views

Groupoids vs. action groupoids

2d ago Mkouboi 121●6

 
2
votes
1
answer
94
views

Equivalence and weak equivalence of groupoids

may 15 at 13:54 The User 283●8

3
13
votes
1
answer
324
views

Second nonabelian group cohomology: cocycles vs. gerbes

may 11 at 16:36 Mikhail Borovoi 2,632●6●14

1
5
votes
1
answer
155
views

Quotient of a reductive group by a non-smooth subgroup

may 9 at 16:22 MathOverflow♦ 1●2●3

 
2
votes
5
answers
256
views

Connected groupoids and action groupoids

apr 24 at 14:05 Ronnie Brown 5,209●17●20

2
2
votes
2
answers
230
views

Constructing a stack (gerbe) from a connected groupoid

apr 16 at 4:43 David Roberts 11.7k●2●18●55

2
9
votes
2
answers
333
views

Automorphisms of $SL_n$ as a variety

jan 15 at 19:45 Jason Starr 1,835●8●14

 
5
votes
1
answer
208
views

Conjugation of homogeneous spaces

jan 9 at 16:39 Mikhail Borovoi 2,632●6●14

3
6
votes
2
answers
575
views

Mostow’s theorem on algebraic groups

sep 19 at 23:15 Jim Humphreys 25.9k●37●82

 
1
vote
0
answers
49
views

Crossed modules quasi-isomorphic to a quasi-abelian crossed module

sep 5 at 13:47 Mikhail Borovoi 2,632●6●14

1 2 3 next