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Recent Posts
- Richard Stanley: Enumerative and Algebraic Combinatorics in the1960’s and 1970’s
- Igor Pak: How I chose Enumerative Combinatorics
- Quantum Computers: A Brief Assessment of Progress in the Past Decade
- Noga Alon and Udi Hrushovski won the 2022 Shaw Prize
- Oliver Janzer and Benny Sudakov Settled the Erdős-Sauer Problem
- Past and Future Events
- Joshua Hinman proved Bárány’s conjecture on face numbers of polytopes, and Lei Xue proved a lower bound conjecture by Grünbaum.
- Amazing: Jinyoung Park and Huy Tuan Pham settled the expectation threshold conjecture!
- Combinatorial Convexity: A Wonderful New Book by Imre Bárány
Top Posts & Pages
- Quantum Computers: A Brief Assessment of Progress in the Past Decade
- Igor Pak: How I chose Enumerative Combinatorics
- Oliver Janzer and Benny Sudakov Settled the Erdős-Sauer Problem
- Richard Stanley: How the Proof of the Upper Bound Theorem (for spheres) was Found
- Richard Stanley: Enumerative and Algebraic Combinatorics in the1960’s and 1970’s
- The Argument Against Quantum Computers - A Very Short Introduction
- A sensation in the morning news - Yaroslav Shitov: Counterexamples to Hedetniemi's conjecture.
- Amazing: Jinyoung Park and Huy Tuan Pham settled the expectation threshold conjecture!
- To cheer you up in difficult times 13: Triangulating real projective spaces with subexponentially many vertices
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Monthly Archives: March 2018
A Wonderful Paper by Igor Pak: Complexity Problems in Enumerative Combinatorics
Greetings from Sa Pa in the very north of Vietnam. Let me recommend a great thought-provoking paper by Igor Pak: Complexity problems in enumerative combinatorics. As Igor wrote on his blog: Well, I finally finished my ICM paper. It’s only 30 … Continue reading
Frankl’s Conjecture for Large Families: Ilan Karpas’ Proof
Frankl’s conjecture asserts that a for every finite family of of finite sets that is closed under union, there is an element that belongs to at least half the sets in the family. We mentioned the problem in our very … Continue reading
Test your intuition 33: Why is the density of any packing of unit balls decay exponentially with the dimension?
Test your intuition: What is the simplest explanation you can give to the fact that the density of every packing of unit balls in is exponentially small in ? Answers are most welcome. Of course, understanding the asymptotic behavior of … Continue reading
Posted in Combinatorics, Geometry, Test your intuition
Tagged Serge Vlăduţ, Sphere packing
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