分类
数学笔记

The Existence of Support Hyperplane

命题 1. Let $K$ be a compact convex set in $\mathbb{R}^n$ […]

分类
Elliptic Equations

Green’s Formula and Green’s Identity

Suppose $\Omega\subset\R^n$ is a domain with $C^1$ boun […]

分类
Elliptic Equations

Harmonic Functions and Fundamental Solution of Laplace Equation

定义 1. Suppose $\Omega\subset\R^n$ is a domain, and $u\i […]

分类
数学笔记

乱谈Peter Walters《An introduction to Ergodic Theory》必备基础

        我想这里主要介绍的时Peter Walters的书《An introduction to Er […]