pi66
  • Member for 6 years, 2 months
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3 answers
18 votes
571 views
5 bookmarks
Tic-tac-toe with one mark type
1 answers
17 votes
2k views
12 bookmarks
Function of two sets intersection
1 answers
10 votes
182 views
5 bookmarks
Disjoint sets with twice ratio
1 answers
9 votes
367 views
1 bookmarks
Maximize sum of products of binary variable
2 answers
8 votes
264 views
3 bookmarks
Two rows of bounded numbers
1 answers
8 votes
312 views
4 bookmarks
Partition of 4-tuples
1 answers
7 votes
334 views
2 bookmarks
Function of two sets
3 answers
7 votes
253 views
1 bookmarks
Shrinking subset and product
0 answers
7 votes
287 views
1 bookmarks
4-tuples with close sums
1 answers
7 votes
244 views
2 bookmarks
Changing tiles by swapping squares
2 answers
7 votes
2k views
4 bookmarks
Product of arithmetic progressions
1 answers
7 votes
346 views
2 bookmarks
Kneser graph with overlap
1 answers
6 votes
219 views
1 bookmarks
Permutation function based on subsets
1 answers
6 votes
277 views
Large dominating sets in tournaments
1 answers
5 votes
241 views
Positioning ice-cream stands on a street
0 answers
4 votes
141 views
1 bookmarks
Image of function contains identity elements
1 answers
4 votes
230 views
Understanding proof about chromatic number
2 answers
4 votes
309 views
1 bookmarks
Simpler combinatorial proof for special case of Kneser's conjecture
1 answers
4 votes
158 views
1 bookmarks
Low difference between sums of blocks
1 answers
3 votes
274 views
Filling cups and buckets continuously
1 answers
3 votes
158 views
Unique maximum degree in tournament
0 answers
3 votes
75 views
Find four sets of coins with similar weights
2 answers
3 votes
756 views
Bound that random walk stays within with constant probability?
0 answers
2 votes
35 views
2 bookmarks
Binary law on pairs of finite unions of segments
2 answers
2 votes
107 views
Difference between two largest degrees
0 answers
2 votes
65 views
Minimum transitive dominating subtournament
1 answers
2 votes
95 views
Vertex reachability in directed graph
1 answers
2 votes
200 views
1 bookmarks
Minimum dominating sets in tournaments
0 answers
2 votes
127 views
Tuples with same coordinate sum
1 answers
1 votes
218 views
Ordering and place in sets