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Recent Posts
- Peter Cameron: Doing research
- To cheer you up in difficult times 18: Beautiful drawings by Neta Kalai for my book: “Gina Says”
- Amazing: Simpler and more general proofs for the g-theorem by Stavros Argyrios Papadakis and Vasiliki Petrotou, and by Karim Adiprasito, Stavros Argyrios Papadakis, and Vasiliki Petrotou.
- Igor Pak: What if they are all wrong?
- To cheer you up in difficult times 17: Amazing! The Erdős-Faber-Lovász conjecture (for large n) was proved by Dong Yeap Kang, Tom Kelly, Daniela Kühn, Abhishek Methuku, and Deryk Osthus!
- Open problem session of HUJI-COMBSEM: Problem #5, Gil Kalai – the 3ᵈ problem
- To cheer you up in difficult times 16: Optimism, two quotes
- The Argument Against Quantum Computers – A Very Short Introduction
- Open problem session of HUJI-COMBSEM: Problem #4, Eitan Bachmat: Weighted Statistics for Permutations
Top Posts & Pages
- Peter Cameron: Doing research
- TYI 30: Expected number of Dice throws
- Amazing: Simpler and more general proofs for the g-theorem by Stavros Argyrios Papadakis and Vasiliki Petrotou, and by Karim Adiprasito, Stavros Argyrios Papadakis, and Vasiliki Petrotou.
- Igor Pak: What if they are all wrong?
- Answer: Lord Kelvin, The Age of the Earth, and the Age of the Sun
- The Argument Against Quantum Computers - A Very Short Introduction
- Chomskian Linguistics
- Dan Romik on the Riemann zeta function
- To cheer you up in difficult times 18: Beautiful drawings by Neta Kalai for my book: "Gina Says"
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Monthly Archives: June 2011
Around Borsuk’s Conjecture 1: Some Problems
Greetings to all! Karol Borsuk conjectured in 1933 that every bounded set in can be covered by sets of smaller diameter. In a previous post I described the counterexample found by Jeff Kahn and me. I will devote a few posts … Continue reading
The Combinatorics of Cocycles and Borsuk’s Problem.
Cocycles Definition: A -cocycle is a collection of -subsets such that every -set contains an even number of sets in the collection. Alternative definition: Start with a collection of -sets and consider all -sets that contain an odd number of members … Continue reading
Tentative Plans and Belated Updates II
Elementary school reunion: Usually, I don’t write about personal matters over the blog, but having (a few weeks ago) an elementary school reunion after 42 years was a moving and exciting event as to consider making an exception. For now, here … Continue reading
Posted in Updates
Tagged Cap set problem, Discrete Geometry, Influence, Quantum computation
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Another way to Revolutionize Football
The angle of Victoria Beckham’s hat (here in a picture from a recent wedding) is closely related to our previous post on football One of the highlights of the recent Newton Institute conference on discrete harmonic analysis was a football … Continue reading