current community
chat
MathOverflow
MathOverflow Meta
your communities
Sign up
or
log in
to customize your list.
more stack exchange communities
company blog
Stack Exchange
Inbox
Reputation and Badges
sign up
log in
tour
help
Tour
Start here for a quick overview of the site
Help Center
Detailed answers to any questions you might have
Meta
Discuss the workings and policies of this site
About Us
Learn more about Stack Overflow the company
Business
Learn more about hiring developers or posting ads with us
MathOverflow
Questions
Tags
Users
Badges
Unanswered
Ask Question
Profile
Activity
Gil Kalai
Meta User
Network Profile
Reputation
10,687
top
4%
overall
10.7k
8.3k
5.9k
2013
2014
2015
2016
Top tag
co.combinatorics
Next privilege
15,000 Rep.
Protect questions
Badges
16
139
223
Newest
Popular Question
Next badge
55/100
Socratic
Impact
~
1.5m
people reached
108 posts edited
3 helpful flags
5,996 votes cast
summary
answers
questions
tags
badges
favorites
bounties
reputation
all actions
257
Answers
newest
activity
votes
20
Experimental Mathematics
Jan 26 '10 at 18:39
2
Expert, Intuitive, Organizing Analogies
Mar 25 at 9:37
1
Important formulas in Combinatorics
Mar 17 at 16:21
9
What is the Cayley projective plane?
Nov 24 '09 at 10:03
1
Important formulas in Combinatorics
Mar 15 at 13:34
5
“Database” of simplicial polytopes/spheres
Jan 29 at 19:17
2
How many simplicial complexes on n vertices up to homotopy equivalence?
Feb 3 at 19:55
2
Classifying two-faces of four-polytopes
Feb 3 at 14:41
10
Examples of major theorems with very hard proofs that have NOT dramatically improved over time
Dec 22 '13 at 16:15
4
Tverberg partitions with less than (r-1)(d+1)+1 points
Jan 31 '13 at 16:56
4
Proposals for polymath projects
Jan 29 at 1:23
5
Examples of theorems with proofs that have dramatically improved over time
Sep 24 '15 at 11:24
1
What is known about the chromatic number for minimum-distance graphs in higher dimensions?
Jan 6 at 8:28
109
Examples of common false beliefs in mathematics
May 7 '10 at 11:03
3
Colorings of triangulations as a generalization of the four-color problem
Jan 6 at 8:19
11
Counterexamples in algebraic topology?
Feb 14 '11 at 5:59
7
What are the implications of the new quasi-polynomial time solution for the Graph Isomorphism problem?
Dec 21 '15 at 21:07
13
Can one make Erdős's Ramsey lower bound explicit?
Nov 7 '09 at 21:20
6
Generalizations of the Four-Color theorem
Sep 15 '15 at 16:33
18
Why is “P vs. NP” necessarily relevant?
Feb 3 '11 at 22:34
7
Algebraic Proof of 4-Colour Theorem?
Sep 13 '15 at 7:39
8
New grand projects in contemporary math
Sep 8 '15 at 17:28
3
Important formulas in Combinatorics
Sep 6 '15 at 18:33
9
Important formulas in Combinatorics
Aug 17 '15 at 9:35
13
A Book You Would Like to Write
Feb 13 '11 at 10:52
7
Important formulas in Combinatorics
Sep 2 '15 at 13:22
4
Experimental Mathematics
Sep 2 '15 at 10:23
7
Important formulas in Combinatorics
Sep 1 '15 at 7:34
6
Experimental Mathematics
Aug 31 '15 at 18:34
3
Important formulas in Combinatorics
Aug 28 '15 at 10:13
MathOverflow works best with JavaScript enabled