A series of cuts at West Virginia University has largely affected the humanities, but any program that is not seen as marketable may get the axe—including those in the math department.
そりゃあ ChatGPT が正しい.
自然言語では
Zero is an integer.
というのが普通で,これを逆転させて
An integer is zero.
にすると明らかに間違いだもの.政治家の良く使うレトリックだけどねぇ.自然言語はかように難しい.
ChatGPT チーム,good job!!
ワインバーグのアドバイス,ほんとにその通り.
You don't have to know everything.
Jump in the pool and start swimming.
-- Steven Weinberg
すべてを知っておく必要はない.
現場に飛び込んで泳ぎ始めればよい.
1/🧵
Steven Weinberg's advice for young scientists:
“You don’t need to know everything”
“Jump in the way”
“Roll with it”
Steven Weinberg (1933–2021) was an American theoretical physicist and Nobel laureate in physics for his contributions with Abdus Salam and Sheldon Glashow.
John Von Neumann appears on the television program "America's Youth Wants To Know". He says, "We need to quickly and continuously educate more math and science students and teachers.
A great preprint appeared on arXiv this morning by Marcelo Campos, Marcus Michelen, Julian Sahasrabudhe and Matthew Jensen -- the first improvement by more than a constant factor to the lower bound for sphere packing in large dimensions since 1947. 1/10
Why do we require Jacobi identity to be satisfied for a Lie bracket? In the process, we also understand intuitively why tr(AB) = tr(BA) without matrix components.
Watch now:
Inner products induce norms.
But when are norms defining inner products?
➤The polarization identity expresses the inner product using the norm when the norm satisfies the parallelogram law.
👉
(Jordan & von Neumann, 1935)
この「リー群と位相群への入門」いいよぉ.とくにハール測度や等質空間上の不変測度に関する部分,詳しい.
#リー群 #位相群 #ハール測度 #不変測度
Alessandra Iozzi's notes "From topological groups to Lie groups", which are still in revision.
ラグランジュとガウスの相加平均と相乗平均の収束の話が一般化できて,なんと正定値対称行列の空間(リーマン対称空間だね)でも同じことができる.
あなたが得るものは? それは測地線の中点! 面白いなぁ.数学はこうでなくちゃ.
#AGM
arithmetic-geometric mean
#AHM
arithmetic-harmonic mean
🎉Fresh from the press:
"What is an inductive mean?"
AMS Notices, December 2023
An inductive mean is a mean defined as a limit of a convergence sequence of other means like the arithmetic-geometric mean
PDF:
HTML:
@amermathsoc
話題の abc 予想証明のプレプリント.
イントロの最初より:
I wrote to Mochizuki suggesting that it would be best that we write this paper as a joint paper, ... and settle, ..., the issues which have surrounded his remarkable proof