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Author Archives: Gil Kalai
Jean
Jean Bourgain and Joram Lindenstrauss. I was very sad to hear that Jean Bourgain, among the greatest mathematicians of our time, and a dear friend, passed away. I first met Jean about forty years ago and later we have become … Continue reading
Amazing: Karim Adiprasito proved the g-conjecture for spheres!
Karim in his youth with a fan Congratulations, Karim! Update: Here is the link to the paper From the arXive, Dec 26, 2018. (Link will be added tomorrow.) COMBINATORIAL LEFSCHETZ THEOREMS BEYOND POSITIVITY by Karim Adiprasito Abstract: Consider a simplicial complex … Continue reading
ICM 2018 Rio (4): Huh; Balog & Morris; Wormald
This is my fourth report from ICM2018. (I plan one more.) As I already mentioned, Combinatorics was very nicely represented at ICM2018. The combinatorics session itself was great, and there were quite a few other sessions and other lectures … Continue reading
Posted in Combinatorics, ICM2018
Tagged Anita Libenau, Józef Balogh, June Huh, Nick Wormald, Rob Morris, Wojtek Samotij
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Nima Anari, Kuikui Liu, Shayan Oveis Gharan, and Cynthia Vinzant Solved the Mihail-Vazirani Conjecture for Matroids!
Milena Mihail and Umesh Vazirani I thank Nati Linial, Dan Spielman and Karim Adiprasito for sharing the news with me. The Mihail-Vazirani conjecture for matroids and Feder-Mihail’s theorem Consider a collection of vectors. A basis is a subset of … Continue reading
Igor Pak will give the 2018 Erdős Lectures
Next week Igor Pak will give the 2018 Erdős Lectures (delayed from June) Here is the poster Combinatorics — Erdos lecture: Igor Pak (UCLA) “Counting linear extensions” Monday December 10 11:00-13:00 Location: IIAS Hall 130, Feldman building, Givat Ram … Continue reading
Posted in Combinatorics, Computer Science and Optimization, Updates
Tagged Erdos lecture, Igor Pak, Paul Erdos
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PCP fest, Tel Aviv University, 18-20 December 2018
Conference web site The study of Probabilistically Checkable Proofs, starting with the discovery of the PCP Theorem, is a cornerstone of modern computer science, with impact on complexity theory, algorithms, and cryptography. Born as a purely theoretical notion, mostly used … Continue reading
Posted in Combinatorics, Computer Science and Optimization, Conferences, Updates
Tagged PCP
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Exciting Beginning-of-the-Year Activities and Seminars.
Let me mention two talks with very promising news by friends of the blog, Karim Adiprasito and Noam Lifshitz. As always, with the beginning of the academic year there are a lot of exciting activities, things are rather hectic around, … Continue reading
Posted in Combinatorics, Geometry, Probability
Tagged Dor Minzer, Eoin Long, Karim Adiprasito, Noam Lifshitz, Peter Keevash
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Aleph’s Corner: T-Shirts
The artist behind Aleph’s corner has now a website offering over 100 T-shirt designs. In addition to a few pictures related to mathematics there are many in a few other categories: “Jazz,” “Urban,” “Nature,” “Signature design,” and “Sea”. Here are … Continue reading
ICM 2018 Rio (3) – Coifman, Goldstein, Kronheimer and Mrowka, and the Four Color Theorem
This post is my third report from ICM 2018. You may remember that I had planned to live-blog on the last four days of the congress but on Monday evening I realized that this was an unrealistic task and decided … Continue reading
Posted in Combinatorics, Geometry, ICM2018
Tagged Catherine Goldstein, Peter Kronheimer, Ronald (Rafi) Coifman, Tomasz Mrowka
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Ricky and Branko
Two dear friends, and great geometers, Ricky Pollack and Branko Grünbaum passed away a few weeks ago. Ricky was a close friend that both Mazi my wife and I loved, and we were both fascinated by his wisdom, charm and … Continue reading
Posted in Combinatorics, Convexity, Geometry, Obituary
Tagged Branko Grunbaum, Ricky Pollack
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