Category Archives: Uncategorized

Combinatorial Morning in Tel Aviv, Sunday 28/12/2025

Posted on December 26, 2025 by Gil Kalai

Coming very soon! Organizer:      Michael Krivelevich Place:  Schreiber 309, Tel Aviv University Event’s site.  https://sites.google.com/view/combinatorics-seminar-tel-aviv Program 09:30-10:00        Asaf Ferber (UC Irvine)  Quantum algorithms on graphs 10:00-10:30        Gal Kronenberg (Oxford U.)  2-factors in … Continue reading →

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Sad Update

Posted on October 19, 2023 by Gil Kalai

Dear all, as you probably know, Israel was gravely attacked on Saturday, October, 7 2023 by Hamas terrorists coming from the Gaza streak. More than a thousand civilians including many children and babies were murdered and more than a hundred … Continue reading →

Posted in Uncategorized, Updates | 4 Comments

The asymptotics of r(4,t)

Posted on June 9, 2023 by Gil Kalai

Originally posted on Points And Lines:
Jacques Verstraete and I posted a preprint on the arXiv today on the off-diagonal Ramsey number . In short, we show that , which is just a factor shy from the upper bound proved…

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Critical Times in Israel: Last Night’s Demonstrations

Posted on March 27, 2023 by Gil Kalai

Last night, the demonstrations in Israel regarding the “judicial reforms” escalated after prime minister Netanyahu fired the defense minister Gallant who called to stop the legislation. My wife and I were in the midst of enjoying a concert and after … Continue reading →

Posted in Computer Science and Optimization, Law, Uncategorized, Updates | Tagged | 10 Comments

The Trifference Problem

Posted on January 24, 2023 by Gil Kalai

Originally posted on Anurag's Math Blog:
What is the largest possible size of a set of ternary strings of length , with the property that for any three distinct strings in , there is a position where they all…

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Greatest Hits 2015-2022, Part II

Posted on January 5, 2023 by Gil Kalai

This is the second part of Greatest Hits 2015-2022, Part I. Here are popular and favorite posts published in 2019-2022. 2019 Supremacy and Sensitivity (and Sunflowers) Test your intuition 38 was contributed in March 2019 by my youngest son Lior. … Continue reading →

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Greatest Hits 2015-2022, Part I

Posted on January 1, 2023 by Gil Kalai

In February 2015 I wrote a post on the blog’s greatest hits in the first seven years, and its time to write a similar post for the eight years that followed. Quick updates: In recent months I took part in … Continue reading →

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Noga Alon and Udi Hrushovski won the 2022 Shaw Prize

Posted on May 24, 2022 by Gil Kalai

Noga Alon, yesterday at TAU, with his long-time collaborators and former students Michael Krivelevich and Benny Sudakov (left) Udi Hrushovski (right) Heartfelt congratulations to Noga Alon and to Ehud (Udi) Hrushovski for winning the 2022 Shaw Prize in Mathematical Sciences! … Continue reading →

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Mathematical news to cheer you up

Posted on August 1, 2021 by Gil Kalai

1.  Anna Kiesenhofer, a PhD mathematician researching PDEs at Ecole Polytechnique Federale Lausanne (EPFL), won the gold medal in the women’s bicycle road race at the Olympics. Here are two trivia question: a) Which hero of a recent post over … Continue reading →

Posted in Combinatorics, Sport, Uncategorized, Updates | 5 Comments

Petra! Jordan!

Posted on February 11, 2020 by Gil Kalai

Last week we had a lovely small workshop in Eilat organized by Nathan Rubin, and as possible since the peace agreement of 1994 between Israel and Jordan, we visited Jordan for one day and saw the spectacular ancient city of … Continue reading →

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