Category Archives: Combinatorics

Ricky and Branko

Two dear friends, and great geometers, Ricky Pollack and Branko Grünbaum  passed away a few weeks ago. Ricky was a close friend that both Mazi my wife and I loved, and we were both fascinated by his wisdom, charm and … Continue reading

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Video of my ICM2018 lecture: Noise Stability, Noise Sensitivity, and the Quantum Computer Puzzle

The Video of my ICM2018 lecture is now on the air Here are the (slightly improved) slides. I made the mistake of trying to improve my slides in the evening before the lecture and in the morning I discovered that … Continue reading

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An Improved Bound for Weak Epsilon-Nets in the Plane, by Nathan Rubin, is on the arXive

The paper An Improved Bound for Weak Epsilon-Nets in the Plane, by Nathan Rubin is now on the arxive. we mentioned  the result in this post, and the problem in this post (my very first) over Tao’s blog What’s New. … Continue reading

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ICM2018 First Report

I just came back from Rio from a great congress. Many great talks and many exciting meetings with old and new friends.  I had planned to live-blog on the last four days of the congress but on Monday evening I … Continue reading

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Building Bridges II, and Rio ICM 2018

In this post I will talk about Building Bridges II – last week conference in Budapest, about my talk and Lex Schrijver’s talk at the conference, about two old videotaped lectures in Microsoft Research (and a prize carrying competition), and … Continue reading

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Beyond the g-conjecture – algebraic combinatorics of cellular spaces I

The g-conjecture for spheres is surely the one single conjecture I worked on more than on any other, and also here on the blog we had a sequence of posts about it by Eran Nevo (I,II,III,IV). Here is a great … Continue reading

Posted in Combinatorics, Convex polytopes, Geometry | Tagged , , , , , , , , , , , , , , , , , , | 6 Comments

An Interview with Yisrael (Robert) Aumann

I was privileged to join Menachem Yaari and Sergiu Hart in interviewing Yisrael Aumann.  The interview is in Hebrew. It is an initiative of the Israel Academy of Sciences and the Humanities. For our non Hebrew speakers here is in … Continue reading

Posted in Academics, Combinatorics, Games, Geometry, Rationality | Tagged , , | 1 Comment

Igor Pak is Giving the 2018 Erdős Lectures in Discrete Mathematics and Theoretical Computer Science

Update: The lectures this week are cancelled.  They will be given at a later date. Next week Igor Pak will give the 2018 Erdős Lectures   Monday Jun 18 2018 Combinatorics — Erdos lecture: Igor Pak (UCLA) “Counting linear extensions” 11:00am to 12:30pm Location: … Continue reading

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Vera T. Sòs, Doctor Philisophiae Honoris Causa, Hebrew University of Jerusalem

Videotaped by Ehud Friedgut.

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Sailing into High Dimensions

On June 20 at 13:30 I talk here at HUJI about Sailing into high dimensions. (Thanks to Smadar Bergman for the poster.)

Posted in Combinatorics, Geometry, Updates | Tagged | 2 Comments