Monthly Archives: February 2026

Cosmin Pohoata: The Cayley-Bacharach theorem and its applications

Posted on February 25, 2026 by Gil Kalai

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 →

Posted in Algebra, Combinatorics | Tagged | 2 Comments

Updates and Plans V: From Boise to Tel Aviv, Ceasefire, My 70th Birthday, Nostalgia, Problems, Outrageous Conjectures, Quantum, and AI

Posted on February 3, 2026 by Gil Kalai

This is the fifth post of this type (I (2008); II(2011); III(2015); IV(2024)). Between Boise and Tel Aviv During the summer we spent two months in the lovely city of Boise, Idaho. We stayed with my son Hagai and his husband Felix, … Continue reading →

Posted in Combinatorics, Computer Science and Optimization, Open problems, personal, Updates | Tagged | 9 Comments