15

Answers
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14
What’s a groupoid? What’s a good example of a groupoid?
13
Intuition for Group Cohomology
11
Cocktail party math
5
Motivation for algebraic K-theory?
5
References for homotopy colimit
5
Why aren’t there more classifying spaces in number theory?
4
Estimating the number of clusters
2
Killing the torsion in homotopy
1
How do you show that $S^{\infty}$ is contractible?
1
Database of finite presentations of used groups
1
Textbook recommendations for undergraduate proof-writing class
0
Where have you used computer programming in your career as an (applied/pure) mathematician?
0
presentation for GL(n,K)
0
Does finite math need the Axiom of Infinity?
0
Two finite groups with the same identical relations?