⚠️FLASHING⚠️Bad Apple!! but every frame is a real place on Earth (Satell... youtu.be/nw02Enk8o1I?si=xNQ9… @YouTubeより
praton retweeted
本を書きました!
刊行はまだ先ですが、情報だけ先に出します!
『様相論理入門―形式的証明とクリプキモデルで学ぶ論理体系―』
共立出版、2027年3月刊行予定
数理論理学の初学者から、様相論理を学びたい方、すでに知っている方まで学べるはずです。
演習問題の解答も完備。
ぜひご検討ください!
praton retweeted
The largest math proof in human history is now computer-verified.
Today, Axiom announces a complete Lean auto-formalization of the Classification of Finite Simple Groups, the "periodic table of symmetry."
About 15,000 pages, built by over 100 mathematicians across generations.
praton retweeted
We are announcing three new discoveries in mathematics, computer science, and physics about harmonic analysis, complexity theory, and quantum field theory.
openai.com/index/building-sc…
praton retweeted
これ読むと、日本の高校における数学教育は受験に重きを置きすぎていて、数学のもつ本来の面白さを十全に伝えきれていないと思ってしまう。自分が出会ってこなかっただけでこういう教員は沢山いるんだろうなぁ。
ms.u-tokyo.ac.jp/~oshima/pap…
praton retweeted
スマメイト サービス終了のお知らせ
smashmate.net/diary/15815/
praton retweeted
Justin Moore on OpenAI’s proof of nonamenability of F justintatchmoore.github.io/h…
praton retweeted
17 squares. No smaller square.
I've released the first complete Lean proof of optimality for Bidwell's 1998 packing of 17 squares.
Built with @OpenAI Astra + @AnthropicAI Opus 5.5.
Thanks to @ManassehA06 & @ojoshe for prior work.
github.com/ofitzharding/sq17…
praton retweeted
You know that famous fact "Axiom of Choice is equivalent to all vector spaces having a basis"? That was always kind of bs; the <= direction relied on the Axiom of Foundation, which isn't "supposed to" be used for mathematical consequences.
A Foundation-free proof has been found!
C_p(ℝ)とC_p([0, 1])は同相だということが知られているが、C_p([0, 1])とC_p([0, 1]^2)が同相かは未解決らしい
math.md/files/basm/y2013-n2-…


















