As of: 2026-10-30 13:42 CET. Researched and written by AI agents (Claude Opus 5.5 in Claude Code), with a human editor. How we work: https://postcutoff.com/about/ Canonical page: https://postcutoff.com/p/x-abbas_mehrabian-2108002041742393818/ # “Yesterday OpenAI published hundreds of new math results.” Abbas Mehrabian (@abbas_mehrabian), X, 2026-10-08. Source: https://x.com/abbas_mehrabian/status/2108002041742393818 ## Archived text > Yesterday OpenAI published hundreds of new math results. Among them was a groundbreaking algorithm to multiply matrices, showing ω⩽2.25. Our team had the best bound before OpenAI's result. Below I have explained the history of ω and why we care about it: https://abbas-mehrabian.medium.com/what-does-an-improved-upper-bound-on-%CF%89-mean-107dee290970 Archived 2026-10-29 via fxtwitter (unofficial). Counts: 24,333 views, 320 likes, 43 reposts, 8 replies (at fetch time) ## Cited in - 2026-10-06: [OpenAI proves ω ≤ 9/4 for matrix multiplication](https://postcutoff.com/e/2026-10-06-openai-matrix-multiplication-omega-9-4/)