20

Questions
votes newest views recent
5
36
votes
3
answers
2k
views

History of the four-colour problem

jan 22 12 at 9:52 Norman Biggs 81●1

4
25
votes
2
answers
954
views

finding the parity of a permutation in little space

aug 14 11 at 18:47 Igor Rivin 31.2k●3●37●71

9
25
votes
4
answers
1k
views

Probability of zero in a random matrix

jun 6 at 10:22 Brendan McKay 9,120●1●13●33

2
20
votes
1
answer
916
views

Jumping in the integers

sep 5 11 at 3:23 Noam D. Elkies 18.1k●4●63●91

9
20
votes
1
answer
630
views

A strange sum over bipartite graphs

mar 6 12 at 11:02 Brendan McKay 9,120●1●13●33

6
13
votes
1
answer
493
views

Overlapping Gershgorin disks

feb 18 at 14:29 David Bindel 41●1

4
12
votes
2
answers
392
views

Complexity of equitable partitions

may 30 at 10:22 MathOverflow♦ 1●2●3

1
12
votes
2
answers
471
views

Largest graphs of girth at least 6

jun 28 at 18:40 Gerhard Paseman 811●1●5●5

1
12
votes
0
answers
240
views

probability of zero subset sum

jan 21 at 12:59 Brendan McKay 9,120●1●13●33

 
11
votes
5
answers
423
views

Intersecting 4-sets

nov 6 at 17:27 Tony Huynh 8,963●1●22●62

1 2 next