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 Open problem session of HUJICOMBSEM: Problem #1, Nati Linial – Turan type theorems for simplicial complexes.
 Péter Pál Pach and Richárd Palincza: a Glimpse Beyond the Horizon
 To cheer you up 14: Hong Liu and Richard Montgomery solved the Erdős and Hajnal’s odd cycle problem
 To cheer you up in difficult times 13: Triangulating real projective spaces with subexponentially many vertices
 Benjamini and Mossel’s 2000 Account: Sensitivity of Voting Schemes to Mistakes and Manipulations
 Test Your Intuition (46): What is the Reason for Maine’s Huge Influence?
 This question from Tim Gowers will certainly cheeer you up! and test your intuition as well!
 Three games to cheer you up.
 Cheerful Test Your Intuition (#45): Survey About Sisters and Brothers
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 Open problem session of HUJICOMBSEM: Problem #1, Nati Linial  Turan type theorems for simplicial complexes.
 Péter Pál Pach and Richárd Palincza: a Glimpse Beyond the Horizon
 To cheer you up 14: Hong Liu and Richard Montgomery solved the Erdős and Hajnal's odd cycle problem
 TYI 30: Expected number of Dice throws
 Elchanan Mossel's Amazing Dice Paradox (your answers to TYI 30)
 This question from Tim Gowers will certainly cheeer you up! and test your intuition as well!
 Cheerful Test Your Intuition (#45): Survey About Sisters and Brothers
 Answer: Lord Kelvin, The Age of the Earth, and the Age of the Sun
 To cheer you up in difficult times 13: Triangulating real projective spaces with subexponentially many vertices
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Category Archives: Updates
To cheer you up in difficult times 9: Alexey Pokrovskiy proved that Rota’s Basis Conjecture holds asymptotically
Pokrovskiy’s startling morning rainbow Rota’s Basis Conjecture holds asymptotically, by Alexey Pokrovskiy Abstract: Rota’s Basis Conjecture is a well known problem from matroid theory, that states that for any collection of n bases in a rank n matroid, it is … Continue reading
To cheer you up in difficult times 7: Bloom and Sisask just broke the logarithm barrier for Roth’s theorem!
Thomas Bloom and Olof Sisask: Breaking the logarithmic barrier in Roth’s theorem on arithmetic progressions, arXiv:200703528 Once again Extraordinary news regarding Roth Theorem! (I thank Ryan Alweiss for telling me about it and Rahul Santhanam for telling me … Continue reading
To cheer you up in difficult times 5: A New Elementary Proof of the Prime Number Theorem by Florian K. Richter
Here is a piece of news that will certainly cheer you up: Florian Richter found A new elementary proof of the prime number theorem. (I thank Tami Ziegler for telling me about the new result.) From left to right: Atle Selberg, … Continue reading
Ringel Conjecture, Solved! Congratulations to Richard Montgomery, Alexey Pokrovskiy, and Benny Sudakov
Ringel’s conjecture solved (for sufficiently large n) A couple weeks ago and a few days after I heard an excellent lecture about it by Alexey Pokrovskiy in Oberwolfach, the paper A proof of Ringel’s Conjecture by Richard Montgomery, Alexey Pokrovskiy, … Continue reading
Posted in Combinatorics, Open problems, Updates
Tagged Alexey Pokrovskiy, Benny Sudakov, Richard Montgomery
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Two talks at HUJI: on the “infamous lower tail” and TOMORROW on recent advances in combinatorics
In this post I advertise my colloquium lecture tomorrow – Thursday 23/1/2020 14:30 – on recent advances in combinatorics, and also mention Wojtek Samotij’s lecture on our combinatorics seminar on The lower tail for triangles in random graphs. Click here … Continue reading
Posted in Combinatorics, Updates
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Abel in Jerusalem – SUNDAY, January 12, 2020, and other events
Update: Boris Solomyak’s birthday conference (January 1314, BarIlan University)is now added. I would like to report on seven eight nine ten mathematical events taking place in Jerusalem, the Tel Aviv area, and Haifa in the next few weeks. (Probably I … Continue reading
Quantum computers: amazing progress (Google & IBM), and extraordinary but probably false supremacy claims (Google).
A 2017 cartoon from this post. After the embargo update (Oct 25): Now that I have some answers from the people involved let me make a quick update: 1) I still find the paper unconvincing, specifically, the verifiable experiments (namely experiments … Continue reading
Posted in Combinatorics, Computer Science and Optimization, Quantum, Updates
Tagged John Martinis
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Computer Science and its Impact on our Future
A couple of weeks ago I told you about Avi Wigderson’s vision on the connections between the theory of computing and other areas of mathematics on the one hand and between computer science and other areas of science, technology and … Continue reading
Posted in Academics, Computer Science and Optimization, Quantum, Updates
Tagged computer science
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A sensation in the morning news – Yaroslav Shitov: Counterexamples to Hedetniemi’s conjecture.
Two days ago Nati Linial sent me an email entitled “A sensation in the morning news”. The link was to a new arXived paper by Yaroslav Shitov: Counterexamples to Hedetniemi’s conjecture. Hedetniemi’s 1966 conjecture asserts that if and are two … Continue reading
Posted in Combinatorics, Open problems, Updates
Tagged Hedetniemi's conjecture, Yaroslav Shitov
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