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Category Archives: Algebra
Cosmin Pohoata: The Cayley-Bacharach theorem and its applications
Cosmin Pohoata’s new and beautiful blog post presents several combinatorial applications of the Cayley–Bacharach theorem. Let me also mention his earlier post, in which he gave a new proof of Jamison’s direction tree theorem: every finite noncollinear point set in … Continue reading
Ten Recent Questions for ChatGPT
I recently asked over Math Overflow about Examples for the use of AI and especially LLMs in notable mathematical developments, and there were several interesting answers. Here are (slightly edited) 10 recent questions that I asked ChatGPT that have led … Continue reading
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 David Ellis, … Continue reading
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 2025 given by Mehtaab S. Sawhney, … Continue reading
Some mathematical news
Update: Let me mention a ninth paper that just appeared on the arXive. IX. … and the optimal sofa for the moving sofa problem is … Gerver’s sofa. Optimality of Gerver’s Sofa, by Jineon Baek (h/t for Dan Romik who … Continue reading
Posted in Algebra, Analysis, Combinatorics, Convex polytopes, Geometry, Number theory, Updates
Tagged Alexander Lubotzky, Amey Bhangale, Anton Kapustin, Ben Green, Chi-Fang Chen, Dor Minzer, Jineon Baek, Joel A. Tropp, Jorge Garza-Vargas, Joshua Hinman, Lewis Bowen, Mehtaab Sawhney, Michael Chapman, Peter Keevash, Ramon van Handel, Sophie Morier-Genoud, Subhash Khot, Thomas Vidick, Valentin Ovsienko, Yang P. Liu, Yirong Yang
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Pictures from Our 2024 Annual Meeting of the Israel Mathematical Union and Student Day
To me and to many mathematicians in Israel, the Annual meeting of the Israeli Mathematical Union is a dear event and we try to take part. (Here we briefly described the 2017 meeting in Acre, and here the 2014 meeting … Continue reading
Posted in Algebra, Analysis, Computer Science and Optimization
Tagged Amir Abboud, Lior Yanovski, Misha Sodin
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Greg Kuperberg @ Tel Aviv University
Greg Kuperberg is on a short visit in Israel and yesterday he gave a fantastic lecture on an improved bound for the Solovay-Kitaev theorem. Here is a videotaped lecture of Greg on the same topic in QIP2023. The Solovay-Kitaev theorem … Continue reading
Posted in Algebra, Combinatorics, Computer Science and Optimization, Quantum
Tagged Greg Kuperberg
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ICM 2022: Langlands Day
ICM 2022 is running virtually and you can already watch all the videos of past lectures at the IMU You-Tube channel, and probably even if you are not among the 7,000 registered participants you can see them “live” on You-Tube … Continue reading
Posted in Algebra, ICM2022, Number theory
Tagged David Kazhdan, Frank Celegari, ICM2022, Marie-France Vignéras
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Combinatorics and more 
