5

Questions
votes newest views recent
13
28
votes
2
answers
1k
views

Which colimits commute with which limits in the category of sets?

sep 10 at 12:55 Marie Bjerrum 81●1●1

6
17
votes
0
answers
328
views

Is there a (discrete) monoid M injecting into its group completion G for which BM is not homotopy equivalent to BG?

feb 18 at 22:22 Omar Antolín-Camarena 1,507●7●16

8
13
votes
5
answers
1k
views

In what sense are fields an algebraic theory?

may 27 10 at 20:14 Buschi Sergio 1,809●1●4●8

6
11
votes
0
answers
360
views

What are some examples of weak ω-categories?

apr 30 at 13:33 Omar Antolín-Camarena 1,507●7●16

9
7
votes
2
answers
775
views

Is there a description of sheaf cohomology in algebraic-topological terms?

aug 11 at 13:21 Akhil Mathew 12.1k●2●29●89