Theorem (One point compactification) Any locally compact space \(X\) can be embedded in another compact space \(Y\), which just has one more point than \(X\), such that the relative topology of \(X\) with respect to \(Y\) is the same as the original…

第I部分 引论 I.1 数学是做什么的 I.2 数学的语言和语法 I.3 一些基本的数学定义 I.4 数学研究的一般目的 第II部分 现代数学的起源 II.1 从数到数系 II.2 几何学 II.3 抽象代数的发展 II.4 算法 II.5 数学分析的严格性的发展 II.6 证明的概念的发展 II.7 数学基础中的危机 第III部分 数学概念 III.1 选择公理 (The Axiom of Choice) III.2 决定性公理 (The Axiom of Determinacy) III.3…

A discrete cosine transform (DCT) expresses a finite sequence of data points in terms of a sum of cosine functions oscillating at different frequencies. DCTs are important to numerous applications in science and engineering, from lossy compression of…