130

Questions
votes newest views recent
85
97
votes
73
answers
12k
views

Not especially famous, long-open problems which anyone can understand

may 13 at 11:01 Santi Spadaro 666●4●6

17
36
votes
0
answers
4k
views

Does Godel’s incompleteness theorem admit a converse?

jun 30 at 5:37 Max 1●1●1●5

6
28
votes
3
answers
3k
views

Mazur’s unpublished manuscript on primes and knots?

jun 28 11 at 7:05 wow po 1

11
14
votes
7
answers
3k
views

Collecting proofs that finite multiplicative subgroups of fields are cyclic.

feb 8 11 at 18:36 inkspot 1,707●3●8

7
35
votes
4
answers
2k
views

If the Riemann Hypothesis fails, must it fail infinitely often?

jan 2 11 at 6:03 GH 15.1k●1●31●53

13
27
votes
8
answers
2k
views

What are the external triumphs of matroid theory?

jul 7 at 0:07 Patricia Hersh 2,685●1●9●21

11
28
votes
11
answers
2k
views

Important open problems that have already been reduced to a finite but infeasible amount of computation

nov 14 at 9:06 Nick Gill 2,881●7●18

8
16
votes
6
answers
2k
views

What makes a theorem *a* “nullstellensatz.”

feb 11 11 at 6:44 Tom Leinster 13.5k●1●40●82

2
9
votes
1
answer
2k
views

“You can’t push a rope”

jul 17 at 5:40 dab 163●6

9
24
votes
1
answer
2k
views

A puzzling remark of Manin (ICM 1978)

apr 27 11 at 16:34 Alex 'qubeat' 151●6

1 2 3 4 5 … 13 next