13

Questions
votes newest views recent
93
88
votes
28
answers
15k
views

Cool problems to impress students with group theory [closed]

apr 13 at 6:23 Andres Caicedo 14.4k●1●42●79

71
125
votes
8
answers
5k
views

Two commuting mappings in the disk

may 14 at 11:22 Daniele Zuddas 808●2●9

16
28
votes
2
answers
1k
views

Moving one family of commuting self-adjoint operators to another without losing commutativity on the way

13h ago Sean Lawton 225●9

8
17
votes
4
answers
1k
views

Minkowski sum of small connected sets

dec 1 09 at 18:40 Gil Kalai 10.7k●6●80●144

5
15
votes
2
answers
863
views

Center of mass from the abstract point of view, or could the ancient Greeks invent modern analysis?

dec 24 at 0:22 Deane Yang 12.6k●1●33●82

4
10
votes
3
answers
708
views

Expectation of the product of almost independent Gaussians

nov 20 09 at 17:33 fedja 19.4k●2●46●94

5
12
votes
1
answer
606
views

Why is there no formula for partial sums of some simple series?

dec 3 11 at 10:36 Igor Rivin 31.2k●3●37●71

2
16
votes
1
answer
487
views

Is the ball reducible in some high dimension?

jun 30 at 21:34 Greg Kuperberg 36.3k●2●116●179

2
15
votes
1
answer
402
views

Convex bodies with constant maximal section function in odd dimensions

jan 4 12 at 2:00 fedja 19.4k●2●46●94

3
7
votes
1
answer
349
views

A toy model for the t-section problem

jun 5 11 at 17:53 Douglas Zare 13.2k●3●36●58

1 2 next