Author Archives: Gil Kalai

Alexander A. Gaifullin: Many 27-vertex Triangulations of Manifolds Like the Octonionic Projective Plane (Not Even One Was Known Before).

  From top left clockwise: Alexander Gaifullin, Denis Gorodkov, Ulrich Brehm, Wolfgang Kühnel  Here is the paper: Alexander A. Gaifullin: 634 vertex-transitive and more than 10¹⁰³ non-vertex-transitive 27-vertex triangulations of manifolds like the octonionic projective plane  Abstract with annotation: In … Continue reading

Posted in Combinatorics, Geometry | Tagged , , , | 1 Comment

Answer to Test Your Intuition 50: Detecting a Deviator

Two weeks ago we asked: Ruth and Ron start together at the origin and take a walk on the integers. Every day they make a move. They take turns in flipping a coin and they move together right or left … Continue reading

Posted in Games, Probability, Test your intuition | Tagged | 8 Comments

To cheer you up in difficult times 36: The Immense Joy of Fake Reverse Parking

Fake reverse parking Update: fake reverse parking is known already as the much debated “pull-through parking”. (Thanks to Gali Weinstein over Facebook for telling me about it.) It is also mentioned as #879 among a thousand awesome things by Neil … Continue reading

Posted in People, personal, Taxi-and-other-stories | Tagged | 2 Comments

Ordinary computers can beat Google’s quantum computer after all

Science magazine has an article written by Adrian Cho Ordinary computers can beat Google’s quantum computer after all. It is about the remarkable progress in classical simulations of sampling task like those sampling tasks that led to the 2019 Google’s … Continue reading

Posted in Quantum, Updates | Tagged | 5 Comments

Test Your Intuition 50. Two-Player Random Walk; Can You Detect Who Did Not Follow the Rules?

Ruth and Ron start together at the origin and take a walk on the integers. Every day they make a move. They take turns in flipping a coin and they move together right or left according to the outcome. Their … Continue reading

Posted in Probability, Test your intuition | Tagged , | 13 Comments

ICM 2022. Kevin Buzzard: The Rise of Formalism in Mathematics

In this post I would like to report on Kevin Buzzard’s spectacular lecture on moving mathematics toward formal mathematical proofs.  (Here are the slides.) The picture above is based on images from the other spectacular Saturday morning lecture by Laure … Continue reading

Posted in Computer Science and Optimization, ICM2022, Logic and set theory, Mathematics and Computers, Number theory, What is Mathematics | 11 Comments

ICM 2022: Langlands Day

ICM 2022 is running virtually and you can already watch all the videos of past lectures at the IMU You-Tube channel, and probably even if you are not among the 7,000 registered participants you can see them “live” on You-Tube … Continue reading

Posted in Algebra, ICM2022, Number theory | Tagged , , , | Leave a comment

ICM 2022 awarding ceremonies (1)

Hugo Duminil-Copin, June Huh, James Maynard and Maryna Viazovska were awarded the Fields Medal 2022 and Mark Braverman was awarded the Abacus Medal 2022. I am writing from Helsinki where I attended the meeting of the General Assembly of the … Continue reading

Posted in Academics, Algebra, Applied mathematics, Combinatorics, Computer Science and Optimization, Convexity, Geometry, ICM2022, Probability | 5 Comments

ICM 2022 Virtual Program, Live events, and Dynamics Week in Jerusalem

ICM 2022 Next Tuesday, July 5 2022 will be the opening day of the International Congress of Mathematicians (ICM 2022) that, because of the war in Ukraine, will be fully virtual. Here is the link for the program for ICM … Continue reading

Posted in ICM2022, Updates | Tagged , | Leave a comment

Algorithmic Game Theory: Past, Present, and Future

Noam Nisan is 60 Today, June 26 2022, is the opening day of Algorithmic Game Theory: Past, Present, and Future, a workshop in honor of Noam Nisan’s 60th Birthday. The workshop takes place on June 26-30 2022, at the CS … Continue reading

Posted in Academics, Economics, Games, Updates | 1 Comment