20210714 
To Cheer You Up in Difficult Times 28: Math On the Beach (Alef’s Corner) 
Art ‧ Gil Kalai 

20210630 
To cheer you up in difficult times 27: A major recent “Lean” proof verification 
Algebra ‧ Gil Kalai 

20210609 
To cheer you up in difficult times 26: Two reallife lectures yesterday at the Technion 
Combinatorics ‧ Gil Kalai 

20210531 
To Cheer You Up in Difficult times 24: Borodin’s colouring conjecture! 
Combinatorics ‧ Gil Kalai 

20210520 
To cheer you up in difficult times 25: some mathematical news! (Part 2) 
Algebra ‧ Gil Kalai 

20210514 
To cheer you up in difficult times 23: the original handwritten slides of Terry Tao’s 2015 Einstein Lecture in Jerusalem 
Analysis ‧ Gil Kalai 

20210507 
Alef Corner: ICM2022 
Art ‧ Gil Kalai 

20210422 
The probabilistic proof that 2^400593 is a prime: a revolutionary new type of mathematical proof, or not a proof at all? 
Computer Science and Optimization ‧ Gil Kalai 

20210422 
With Avi at Suzanna 
Taxiandotherstories ‧ Gil Kalai 

20210416 
Meeting Michael H. at Rio 
Taxiandotherstories ‧ Gil Kalai 

20210329 
What is mathematics (or at least, how it feels) 
What is Mathematics ‧ Gil Kalai 

20210326 
Alef’s Corner 
Art ‧ Gil Kalai 

20210323 
To cheer you up in difficult times 22: some mathematical news! (Part 1) 
Combinatorics ‧ Gil Kalai 

20210317 
Cheerful News in Difficult Times: The Abel Prize is Awarded to László Lovász and Avi Wigderson 
Combinatorics ‧ Gil Kalai 

20210310 
Amazing: Feng Pan and Pan Zhang Announced a Way to “Spoof” (Classically Simulate) the Google’s Quantum Supremacy Circuit! 
Computer Science and Optimization ‧ Gil Kalai 

20210226 
To cheer you up in difficult times 21: Giles Gardam lecture and new result on Kaplansky’s conjectures 
Algebra ‧ Gil Kalai 

20210219 
Nostalgia corner: John Riordan’s referee report of my first paper 
Combinatorics ‧ Gil Kalai 

20210218 
At the Movies III: Picture a Scientist 
Movies ‧ Gil Kalai 

20210217 
At the Movies II: Kobi Mizrahi’s short movie White Eye makes it to the Oscar’s short list. 
Movies ‧ Gil Kalai 

20210216 
And the Oscar goes to: Meir Feder, Zvi Reznic, Guy Dorman, and Ron Yogev 
Computer Science and Optimization ‧ Gil Kalai 

20210215 
Thomas Vidick: What it is that we do 
What is Mathematics ‧ Gil Kalai 

20210209 
To cheer you up in difficult times 20: Ben Green presents superpolynomial lower bounds for offdiagonal van der Waerden numbers W(3,k) 
Combinatorics ‧ Gil Kalai 

20210203 
To cheer you up in difficult times 19: Nati Linial and Adi Shraibman construct larger cornerfree sets from better numbersontheforehead protocols 
Combinatorics ‧ Gil Kalai 

20210129 
Possible future Polymath projects (2009, 2021) 
Combinatorics ‧ Gil Kalai 

20210127 
Peter Cameron: Doing research 
What is Mathematics ‧ Gil Kalai 

20210125 
To cheer you up in difficult times 18: Beautiful drawings by Neta Kalai for my book: “Gina Says” 
Art ‧ Gil Kalai 

20210121 
Amazing: Simpler and more general proofs for the gtheorem by Stavros Argyrios Papadakis and Vasiliki Petrotou, and by Karim Adiprasito, Stavros Argyrios Papadakis, and Vasiliki Petrotou. 
Algebra ‧ Gil Kalai 

20210119 
Igor Pak: What if they are all wrong? 
Combinatorics ‧ Gil Kalai 

20210114 
To cheer you up in difficult times 17: Amazing! The ErdősFaberLovász conjecture (for large n) was proved by Dong Yeap Kang, Tom Kelly, Daniela Kühn, Abhishek Methuku, and Deryk Osthus! 
Combinatorics ‧ Gil Kalai 

20210112 
Open problem session of HUJICOMBSEM: Problem #5, Gil Kalai – the 3ᵈ problem 


20210110 
Open problem session of HUJICOMBSEM: Problem #5, Gil Kalai – the 3ᵈ problem 
Combinatorics ‧ Gil Kalai 

20210107 
To cheer you up in difficult times 16: Optimism, two quotes 
Art ‧ Gil Kalai 

20201229 
The Argument Against Quantum Computers – A Very Short Introduction 
Combinatorics ‧ Gil Kalai 

20201226 
Open problem session of HUJICOMBSEM: Problem #4, Eitan Bachmat: Weighted Statistics for Permutations 
Combinatorics ‧ Gil Kalai 

20201222 
To Cheer You Up in Difficult Times 15: Yuansi Chen Achieved a Major Breakthrough on Bourgain’s Slicing Problem and the Kannan, Lovász and Simonovits Conjecture 
Combinatorics ‧ Gil Kalai 

20201213 
Open problem session of HUJICOMBSEM: Problem #3, Ehud Friedgut – Independent sets and Lionel Levine’s infamous hat problem. 
Combinatorics ‧ Gil Kalai 

20201210 
Open problem session of HUJICOMBSEM: Problem #2 Chaya Keller: The Krasnoselskii number 
Combinatorics ‧ Gil Kalai 

20201206 
Photonic Huge Quantum Advantage ??? 
Combinatorics ‧ Gil Kalai 

20201127 
Recent progress on high dimensional TuranType problems by Andrey Kupavskii, Alexandr Polyanskii, István Tomon, and Dmitriy Zakharov and by Jason Long, Bhargav Narayanan, and Corrine Yap. 
Combinatorics ‧ Gil Kalai 

20201126 
Open problem session of HUJICOMBSEM: Problem #1, Nati Linial – Turan type theorems for simplicial complexes. 
Combinatorics ‧ Gil Kalai 

20201120 
Péter Pál Pach and Richárd Palincza: a Glimpse Beyond the Horizon 
Combinatorics ‧ Gil Kalai 

20201117 
To cheer you up 14: Hong Liu and Richard Montgomery solved the Erdős and Hajnal’s odd cycle problem 
Combinatorics ‧ Gil Kalai 

20201115 
To cheer you up in difficult times 13: Triangulating real projective spaces with subexponentially many vertices 
Algebra ‧ Gil Kalai 

20201111 
Benjamini and Mossel’s 2000 Account: Sensitivity of Voting Schemes to Mistakes and Manipulations 
Combinatorics ‧ Gil Kalai 

20201027 
Test Your Intuition (46): What is the Reason for Maine’s Huge Influence? 
Games ‧ Gil Kalai 

20201019 
This question from Tim Gowers will certainly cheeer you up! and test your intuition as well! 
Logic and set theory ‧ Gil Kalai 

20201011 
Three games to cheer you up. 
Games ‧ Gil Kalai 

20201002 
Cheerful Test Your Intuition (#45): Survey About Sisters and Brothers 
Combinatorics ‧ Gil Kalai 

20200923 
To cheer you up in difficult times 12: Asaf Ferber and David Conlon found new lower bounds for diagonal Ramsey numbers 
Combinatorics ‧ Gil Kalai 

20200904 
Alef Corner: Math Collaboration 
Art ‧ Gil Kalai 

20200902 
Alef’s Corner: Math Collaboration 2 
Art ‧ Gil Kalai 

20200830 
To cheer you up in difficult times 11: Immortal Songs by Sabine Hossenfelder and by Tom Lehrer 
Music ‧ Gil Kalai 

20200828 
To cheer you up in difficult times 10: Noam Elkies’ Piano Improvisations and more 
Games ‧ Gil Kalai 

20200823 
Quantum Matters 
Quantum ‧ Gil Kalai 

20200814 
To cheer you up in difficult times 9: Alexey Pokrovskiy proved that Rota’s Basis Conjecture holds asymptotically 
Combinatorics ‧ Gil Kalai 

20200802 
To Cheer you up in Difficult Times 8: Nathan Keller and Ohad Klein Proved Tomaszewski’s Conjecture on Randomly Signed Sums 
Analysis ‧ Gil Kalai 

20200724 
Noam Lifshitz: A new hypercontractivity inequality — The proof! 
Analysis ‧ Gil Kalai 

20200709 
To cheer you up in difficult times 7: Bloom and Sisask just broke the logarithm barrier for Roth’s theorem! 
Algebra ‧ Gil Kalai 

20200626 
To cheer you up in difficult times 6: Play Rani Sharim’s twoplayer games of life, read Maya BarHillel presentation on catching lies with statistics, and more. 
Combinatorics ‧ Gil Kalai 

20200531 
To cheer you up in difficult times 5: A New Elementary Proof of the Prime Number Theorem by Florian K. Richter 
Number theory ‧ Gil Kalai 

20200511 
To cheer you up in difficult times 4: Women In Theory present — I will survive 
Academics ‧ Gil Kalai 

20200508 
To cheer you up in difficult times 3: A guest post by Noam Lifshitz on the new hypercontractivity inequality of Peter Keevash, Noam Lifshitz, Eoin Long and Dor Minzer 
Analysis ‧ Gil Kalai 

20200421 
Harsanyi’s Sweater 
Games ‧ Gil Kalai 

20200419 
To cheer you up in difficult times II: Mysterious matching news by Gal Beniamini, Naom Nisan, Vijay Vazirani and Thorben Tröbst! 
Combinatorics ‧ Gil Kalai 

20200403 
Trees not Cubes! Memories of Boris Tsirelson 
Combinatorics ‧ Gil Kalai 

20200402 
A small update from Israel and memories from Singapore: Partha Dasgupta, Robin Mason, Frank Ramsey, and 007 
Algebra ‧ Gil Kalai 

20200329 
Game Theory – online Course at IDC, Herzliya 
Combinatorics ‧ Gil Kalai 

20200326 
TYI44: “What Then, To Raise an Old Question, is Mathematics?” 
Test your intuition ‧ Gil Kalai 

20200322 
Kelman, Kindler, Lifshitz, Minzer, and Safra: Towards the EntropyInfluence Conjecture 
Combinatorics ‧ Gil Kalai 

20200319 
Or Ordentlich, Oded Regev and Barak Weiss: New bounds for Covering Density! 
Combinatorics ‧ Gil Kalai 

20200319 
To cheer you up in complicated times – A book proof by Rom Pinchasi and Alexandr Polyanskii for a 1978 Conjecture by Erdős and Purdy! 
Combinatorics ‧ Gil Kalai 

20200319 
A new PolyTCS blog! 
Combinatorics ‧ Gil Kalai 

20200319 
Remarkable New Stochastic Methods in ABF: Ronen Eldan and Renan Gross Found a New Proof for KKL and Settled a Conjecture by Talagrand 
Analysis ‧ Gil Kalai 

20200319 
Hoi Nguyen and Melanie Wood: Remarkable Formulas for the Probability that Projections of Lattices are Surjective 
Algebra ‧ Gil Kalai 

20200319 
Petra! Jordan! 
Uncategorized ‧ Gil Kalai 

20200319 
The largest clique in the Paley Graph: unexpected significant progress and surprising connections. 
Combinatorics ‧ Gil Kalai 

20200319 
Thinking about the people of Wuhan and China 
Uncategorized ‧ Gil Kalai 

20200319 
Ringel Conjecture, Solved! Congratulations to Richard Montgomery, Alexey Pokrovskiy, and Benny Sudakov 
Combinatorics ‧ Gil Kalai 

20200319 
Test your intuition 43: Distribution According to Areas in Top Departments. 
Combinatorics ‧ Gil Kalai 
