Monthly Archives: March 2022

Combinatorial Convexity: A Wonderful New Book by Imre Bárány

Posted on March 21, 2022 by Gil Kalai

A few days ago I received by mail Imre Bárány’s new book Combinatorial Convexity. The book presents Helly-type theorems and other results in convexity with combinatorial flavour. The choice of material and the choice of proofs is terrific and it … Continue reading →

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Chaim Even-Zohar, Tsviqa Lakrec, and Ran Tessler present: The Amplituhedron BCFW Triangulation

Posted on March 5, 2022 by Gil Kalai

There is a recent breakthrough paper The Amplituhedron BCFW Triangulation by Chaim Even-Zohar, Tsviqa Lakrec, and Ran Tessler Abstract:  The amplituhedron   is a geometric object, introduced by Arkani-Hamed and Trnka (2013) in the study of scattering amplitudes in quantum … Continue reading →

Posted in Combinatorics, Convex polytopes, Convexity, Physics | Tagged , , , | 1 Comment