bio  website  gilkalai.wordpress.com 

location  Jerusalem  
age  59  
visits  member for  5 years, 1 month 
seen  4 mins ago  
stats  profile views  17,284 
Professor of Mathematics at the Hebrew University of Jerusalem and at Yale University
9h

revised 
Solutions to the Continuum Hypothesis
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reviewed  Approve Prehomogeneous vector spaces 
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reviewed  Approve Did Grothendieck write about modular forms? 
Dec 9 
awarded  Good Question 
Dec 9 
answered  Generalizations of the FourColor theorem 
Dec 8 
awarded  Popular Question 
Dec 7 
awarded  Nice Question 
Dec 7 
revised 
Generalizations of the FourColor theorem
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Dec 7 
asked  Generalizations of the FourColor theorem 
Dec 2 
comment 
Bounding the absolute sum of entries of the inverse of a 01 matrix
(belated) Welcome to MO, Noga! 
Dec 2 
comment 
lowerbound for $Pr[X\geq EX]$
Dear Fedja, This is a very nice proof, and especially the new nice trick to pass to exp (2Y) and what follows. As Ryan mentioned there is a nice conjecture by Uri Feige (in the paper) that the best bound is obtained when each of the n variables is n+1 with probability 1/(n+1). 
Nov 5 
awarded  Yearling 
Sep 30 
awarded  Explainer 
Sep 27 
comment 
Characterizing faces of 3dimensional polyhedra. (Related to Victor Eberhard's Theorem [1890]:)
Dear Kundor, as it turned out the question remains open. (I forgot to update.) 
Sep 27 
revised 
Characterizing faces of 3dimensional polyhedra. (Related to Victor Eberhard's Theorem [1890]:)
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Aug 22 
awarded  Good Answer 
Aug 13 
revised 
How to find ICM talks?
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Aug 13 
awarded  Favorite Question 
Aug 11 
revised 
A Conjecture About Directed Graphs that are the Union of Two Trees
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Aug 9 
awarded  Nice Answer 