Recent Comments
Advertisements
Category Archives: Combinatorics
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
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 Menachem Yaari, Robert Aumann, Sergiu Hart
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
Posted in Combinatorics, Computer Science and Optimization, Geometry, Updates
Tagged Igor Pak
Leave a comment
Vera T. Sòs, Doctor Philisophiae Honoris Causa, Hebrew University of Jerusalem
Videotaped by Ehud Friedgut.
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.)
Conference in Singapore, Vietnam, Appeasement, Restorative Justice, Laws of History, and Neutrinos
Eliezer Rabinovici Some weeks ago I returned from a beautiful trip to Singapore and Vietnam. For both me and my wife this was the first trip to these very interesting countries. In Singapore I took part in a very unusual … Continue reading
Posted in Combinatorics, Conferences, Physics, Updates
Tagged Ada Yonath, appeasment, Atul Parikh, David Gross, Dora Love, Eliezer Rabinovici, Israel-Iran relationship, Janet Love, Michal Feldman, Partha Dasgupta, Patrick Geary, Penelope Andrews, Singapore, South Africa, Sue Gilligan, Vietnam, Winston Churchill
Leave a comment
A Mysterious Duality Relation for 4-dimensional Polytopes.
Two dimensions Before we talk about 4 dimensions let us recall some basic facts about 2 dimensions: A planar polygon has the same number of vertices and edges. This fact, which just asserts that the Euler characteristic of is zero, … Continue reading
Duncan Dauvergne and Bálint Virág Settled the Random Sorting Networks Conjectures
A short summary: The beautiful decade-old conjectures on random sorting networks by Omer Angel, Alexander Holroyd, Dan Romik, and Bálint Virág, have now been settled by Duncan Dauvergne and Bálint Virág in two papers: Circular support in random sorting networks, by Dauvergne … Continue reading
Posted in Combinatorics, Probability, Updates
Tagged Bálint Virág, Dubcan Dauvergne, Random sorting networks
2 Comments
Zur Luria on the n-Queens Problem
(From Wikipedia ) The eight queens puzzle is the famous problem of placing eight chess queens on a chessboard so that no two queens threaten each other. The questions if this can be done and in how many different ways, as well as the extension … Continue reading
Posted in Combinatorics, Games
Tagged Chess, Eight-queens puzzle, n-queens problem, Zur Luria
6 Comments
Testing *My* Intuition (34): Tiling High Dimension with an Arbitrary Low-Dimensional Tile.
Test your intuition 34 asked the following: A tile is a finite subset of . We can ask if can or cannot be partitioned into copies of . If can be partitioned into copies of we say that tiles . Here … Continue reading
Posted in Combinatorics, Test your intuition
Tagged Adam Chalcraft, Imre Leader, Ta Sheng Tan, Vytautas Gruslys
Leave a comment
