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 Mathematical news to cheer you up
 To Cheer You Up in Difficult Times 28: Math On the Beach (Alef’s Corner)
 To cheer you up in difficult times 27: A major recent “Lean” proof verification
 To cheer you up in difficult times 26: Two reallife lectures yesterday at the Technion
 To Cheer You Up in Difficult times 24: Borodin’s colouring conjecture!
 To cheer you up in difficult times 25: some mathematical news! (Part 2)
 To cheer you up in difficult times 23: the original handwritten slides of Terry Tao’s 2015 Einstein Lecture in Jerusalem
 Alef Corner: ICM2022
 The probabilistic proof that 2^400593 is a prime: a revolutionary new type of mathematical proof, or not a proof at all?
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 Mathematical news to cheer you up
 The Argument Against Quantum Computers  A Very Short Introduction
 A sensation in the morning news  Yaroslav Shitov: Counterexamples to Hedetniemi's conjecture.
 To cheer you up in difficult times 27: A major recent "Lean" proof verification
 Zur Luria on the nQueens Problem
 To Cheer You Up in Difficult Times 28: Math On the Beach (Alef's Corner)
 The Quantum FaultTolerance Debate Updates
 Around Borsuk’s Conjecture 3: How to Save Borsuk's conjecture
 To cheer you up in difficult times 5: A New Elementary Proof of the Prime Number Theorem by Florian K. Richter
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Monthly Archives: January 2018
The Semester Break activities of the High Dimensional Combinatorics and Expanders Special Year
UPDATE: Schedule change! An additional workshop On February 5 and shift in dats of the others. Here is the calendar We have now at HUJI a semester break, but the special semester in High dimensional combinatorics and IIAS leaded by … Continue reading
Akshay Venkatesh Lectures at HUJI – Ostrowski’s Prize Celebration, January 24&25
Thursday January 25, 14:1515:45 Ostrowski’s prize ceremony and Akshay Venkatesh’s prize lecture: Period maps and Diophantine problems Followed by a Basic notion lecture by Frank Calegary 16:3017:45: The cohomology of arithmetic groups and Langlands program Wednesday January 24, 18:0017:00: Akshay Venkatesh … Continue reading
Hardness of Approximating Vertex Cover, PolytopeIntegralityGap, the AlswedeKachatrian theorem, and More.
Lior Silberman asked about applications of the 2to2 game theorem to hardness of approximation, and James Lee answered mentioning applications to vertex cover. Let me elaborate a little on vertex cover, and other matters. (Here is the pervious post on … Continue reading
Jacob Fox, David Conlon, and Benny Sudakov: Vast Improvement of our Knowledge on Unavoidable Patterns in Words
I heard a lecture by Benny Sudakov on the remarkable paper Towertype bounds for unavoidable patterns in words, by David Conlon, Jacob Fox, and Benny Sudakov. Here are the slides, and let me let the slides speak for themselves. The problem
Subhash Khot, Dor Minzer and Muli Safra completed the proof of the 2to2 Games Conjecture
Update: A related blog post by Boaz Barak: Unique Games Conjecture – halfway there? The 2to2 Games Conjecture is a somewhat weaker form of Khot’s unique game conjecture. The paper is: Pseudorandom Sets in Grassmann Graph have NearPerfect Expansion by Subhash Khot, Dor … Continue reading
Posted in Combinatorics, Computer Science and Optimization, Updates
Tagged Dor Minzer, Muli Safra, Subhash Khot
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Interesting Times in Mathematics: Enumeration Without Numbers, Group Theory Without Groups.
Lie Theory without Groups: Enumerative Geometry and Quantization of Symplectic Resolutions Our 21th Midrasha (school) IIAS, January 7 – January 12, 2018 Jerusalem Enumerative Geometry Beyond Numbers MSRI, January 16, 2018 to May 25, 2018 Abstract for the Midrasha
Posted in Algebra, Combinatorics, Geometry, Updates
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Cody Murray and Ryan Williams’ new ACC breakthrough: Updates from Oded Goldreich’s Choices
Thanks to Irit Dinur for telling me about the following: Oded Goldreich’s recent choice is about the paper: Circuit Lower Bounds for Nondeterministic QuasiPolytime: An Easy Witness Lemma for NP and NQP, by Corry Murray and Ryan Williams. Ryan Williams … Continue reading
Posted in Combinatorics, Computer Science and Optimization, Updates
Tagged Circuit complexity, Cody Murray, Ryan Williams
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Yael Tauman Kalai’s ICM2018 Paper, My Paper, and Cryptography
Yael Tauman Kalai: Delegating Computation via NoSignaling Strategies. Ladies and Gentelmen, Here is, exclusively for our readers, Yael Tauman Kalai’s ICM2018 paper: Delegating Computation via NoSignaling Strategies. The opportunity to present the paper arose when a week ago I attended … Continue reading
Posted in Combinatorics, Computer Science and Optimization
Tagged cryptography, ICM2018, Yael Kalai
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