分类
数学笔记

A Proof of Trigonometric Formulas in the Plane of Constant Curvature

$\newcommand{\pr}{\left.\frac{\partial}{\partial r}\rig […]

分类
数学笔记

The Peter-Weyl theorem

From Tao’s Blog: The Peter-Weyl theorem, and non- […]

分类
数学笔记

Weak Convergence in Sobolev Spaces

Suppose $\Omega\subset\R^n$ and donote $W^{1,p}:=W^{1,p […]

分类
Gauge Group and 4-dim Topology

Overview of moduli spaces,review of G-bundles and connections

All the contents are from this wikisite, which is aimed […]

分类
数学笔记

图示一个三角函数(Triangle function)和阶梯函数(Step function)的卷积

和以前一样, 你可以随意移动定位点, 对于远离原点的定位点, 你可以使用绘图区域的不同选项来观察整个图形与局部 […]