摘要: Ascoli-Arzelà 定理:各种版本 这篇是大一下学期修王枫老师的点集拓扑时抄的笔记. 紧空间, 紧致度量空间, 上确界拓扑 设 $X$ 是紧空间, $(Y,d)$ 是紧致度量空间, 赋予 $C(X,Y)$ 上确界度量 [^脚注1]. 则对 $C(X,Y)$ 的子集 $\mathcal{F}$ 阅读全文
posted @ 2023-02-06 02:33 ChaliceSeven 阅读(271) 评论(0) 推荐(0) 编辑
摘要: Algebraic Closure An algebraic closure of a field $F$ is an algebraic extension of $F$ that is algebraically closed. We will prove: Theorem. Every fie 阅读全文
posted @ 2023-02-06 02:16 ChaliceSeven 阅读(16) 评论(0) 推荐(0) 编辑
摘要: MAT350是非法语母语的国际生四月份前的预备课程之一(其实是法语课),由Tuan NGO DAC讲授,他的导师是02年的菲尔兹奖得主Laurent LAFFORGUE。个人主页:[http://tuan.ngodac.perso.math.cnrs.fr/]。 jeudi 2 février 20 阅读全文
posted @ 2023-02-06 02:05 ChaliceSeven 阅读(19) 评论(0) 推荐(0) 编辑
摘要: Two Exercises of Gramian "Gramian determines shape" Proposition. Let ${v_1,\cdots,v_s}$ and ${w_1,\cdots,w_s}$ be two subsets of $\mathbb{R}^n$. Show 阅读全文
posted @ 2023-02-06 02:02 ChaliceSeven 阅读(13) 评论(0) 推荐(0) 编辑
摘要: Complexification The complexification of the real vector space $\mathbb{R}^n$ is the complex vector space $\mathbb{C}^n$. The complexification of the 阅读全文
posted @ 2023-02-06 01:43 ChaliceSeven 阅读(23) 评论(0) 推荐(0) 编辑
摘要: Ordinary Triangularization Many results above are proved over $\mathbb{C}$ using Schur triangularization (see this blog : [https://www.cnblogs.com/cha 阅读全文
posted @ 2023-02-06 01:22 ChaliceSeven 阅读(14) 评论(0) 推荐(0) 编辑
摘要: Generalized Schur's Theorem Generalized Schur's Theorem: Statement THEOREM. Let $V$ be a nonzero finite-dimensional real inner product space and $T$ a 阅读全文
posted @ 2023-02-06 01:09 ChaliceSeven 阅读(17) 评论(0) 推荐(0) 编辑