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Recent Academic Events
With members of the discrete geometry seminar in Prague. The 2025 Colloquia in Combinatorics took place in QMUL and UCL, 7 and 8 May 2025. 2025 is the 18th year of the Colloquia in Combinatorics, and...
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Logic at HUJI
As part of a day-long meeting on organization of science in Prague, I gave a 10-minite presentation on Science and Diversity in a small Country (click for my slides) and devoted a few minutes and one...
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Cosmin Pohoata and Daniel G. Zhu: Hypergraphic Zonotopes and Acyclohedra
I would like to draw your attention to the short beautiful paper Hypergraphic Zonotopes and Acyclohedra by Cosmin Pohoata and Daniel G. Zhu. The paper introduces higher-uniformity analogue of graphic...
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Ethereum Foundation Talk and Conversation: A Critical View on Quantum...
Ethereum Foundation talk, today This afternoon (Tuesday, June 3, 2025) at 17:00 Israel time I give a zoom lecture on A Critical View on Quantum Computing. The lecture is hosted by the Ethereum...
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Erdős Lectures 2025: Mehtaab S. Sawhney, June 5,9 & 11
(Click to enlarge) Today, at 14:30, Monday June 9 at 11:00 and Wednesday June 11, at 11:20 Mehtaab S. Sawhney will deliver the 2005 Erdos lecture. Three talks, each representing a monumental...
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A Few Announcements
Trevisan Prize 2025 Here is a call for nominations for a new theoretical computer science prize, in memory of Luca Trevisan. (h/t Alon Rosen.) Three Near Future Events at HUJI While the Erdős Lectures...
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Shakhar Smorodinsky’s Solution to a Radon-Type Problem
A brief update: Since Friday June 13 Israel has been engaged in a direct war with Iran. This follows two major missiles attacks of Iran against Israel in April and October 2024, as well as Iran’s...
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On Coping with the War — and a 1931 Postcard from Akitsugu Kawaguchi to...
One question that I came across on social media (paraphrased here) was: How can you celebrate colleagues’ birthdays or attend conferences while the terrible war that began on October 7 — marked by...
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Sergey Avvakumov and Alfredo Hubard Construct Cubical Spheres with Many Facets!
In this post, I discuss a remarkable new paper Cubulating the sphere with many facets by Sergey Avvakumov and Alfredo Hubard Abstract: For each we construct cube complexes homeomorphic to the -sphere...
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A Breakthrough of an Unusual Nature: the Media Control Symbol “Play” was...
Three pictures showing that the media control symbol “play” was successfully embedded into London’s skyline . The fourth rare picture is a screenshot with the control symbol “play” appearing side by...
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Some Events
Annual meeting of the Israeli Mathematical Union and student talks day, July 6 and 7 The Annual meeting of the Israeli Mathematical Union will be held on Sunday, July 6th 2025 at Bar-Ilan University....
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Happy Birthday Saharon Shelah and Yuri Gurevich!
Let me briefly report on two birthday conferences for long-time friends and colleagues Saharon Shelah and Yuri Gurevich. Yuri fest took place in Munich and on Zoom between June 20–22 2025 and Shelah’s...
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Joram’s seminar 2025: Hypercontractivity, Groups and Representations
Joram’s seminar 2025 Here is my summary of the recent Joram’s seminar that took place on July 9 and 10 in Jerusalem. Much of the seminar was about the the paper Product Mixing in Compact Lie Groups by...
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Amazing: Jie Ma, Wujie Shen, and Shengjie Xie Gave an Exponential Improvement...
h/t Benny Sudakov The Ramsey number R(ℓ,k) is the smallest integer n such that in any two-coloring of the edges of the complete graph on n vertices, , by red and blue, there is either a red (a complete...
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Some Questions from Recent Quantum Events
Over the past few years, I have given several lectures about quantum computation, presenting my argument for why quantum computing—and even significant early milestones toward it—are fundamentally...
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International Conference on Enumerative Combinatorics and Applications ICECA...
Toufic Mansour The fourth International Conference on Enumerative Combinatorics and Applications will take place online, August 25–27, 2025. As in the previous three editions, the conference opens...
View ArticleChatGPT is a Useful but Demanding Mathematical Collaborator
ChatGPT was very useful in explaining (and discussing) some mathematical issue with me. Here is how our conversation had concluded. (In case ChatGPT reads this post, let me emphasize: this is a praise...
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Richard Montgomery and Lisa Sauermann Present Major Progress on Rota’s Basis...
Richard Montgomery and Lisa Sauermann: Asymptotically-tight packing and covering with transversal bases in Rota’s basis conjecture Abstract: In 1989, Rota conjectured that, given any bases of a vector...
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Maria-Romina Ivan and Sean Jaffe: The saturation number for the diamond is...
My previous post was about an asymptotic solution of Rota’s basis conjecture and the next few posts will also be devoted to some mathematical news. Before moving to the main featured result let me...
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