User Josh

27 votes

What's a groupoid? What's a good example of a groupoid?

answered Oct 19, 2009 at 1:05

17 votes

Intuition for Group Cohomology

answered Jan 6, 2010 at 5:33

12 votes

Cocktail party math

answered Nov 14, 2009 at 14:11

7 votes

Estimating the number of clusters

answered Oct 21, 2009 at 11:40

7 votes

References for homotopy colimit

answered Oct 14, 2009 at 21:31

7 votes

Where have you used computer programming in your career as an (applied/pure) mathematician?

answered Sep 1, 2010 at 11:27

6 votes

Motivation for algebraic K-theory?

answered Oct 14, 2009 at 21:37

5 votes

Why aren't there more classifying spaces in number theory?

answered Aug 31, 2010 at 17:38

4 votes

Textbook recommendations for undergraduate proof-writing class

answered Apr 25, 2011 at 3:03

2 votes

Database of finite presentations of used groups

answered Jun 6, 2010 at 5:37

2 votes

Killing the torsion in homotopy

answered Jan 5, 2010 at 16:10

0 votes

Does finite mathematics need the axiom of infinity?

answered Oct 15, 2009 at 3:42

0 votes

Two finite groups with the same identical relations?

answered Oct 15, 2009 at 21:50

0 votes

presentation for GL(n,K)

answered Jun 6, 2010 at 5:41

Stack Exchange Network

14 Answers

What's a groupoid? What's a good example of a groupoid?

Intuition for Group Cohomology

Cocktail party math

Estimating the number of clusters

References for homotopy colimit

Where have you used computer programming in your career as an (applied/pure) mathematician?

Motivation for algebraic K-theory?

Why aren't there more classifying spaces in number theory?

Textbook recommendations for undergraduate proof-writing class

Database of finite presentations of used groups

Killing the torsion in homotopy

Does finite mathematics need the axiom of infinity?

Two finite groups with the same identical relations?

presentation for GL(n,K)