Zorich的《数学分析》详细而明确地告诉你数学分析是所有高等数学的入门，信号处理这个方向要努力的地方多着呢。(Zorich's mathematical analysis tells you in detail and clearly that mathematical analysis is the entry of all higher mathematics, and the direction of signal processing is much harder.)

如果想深入了解度量空间、拓扑空间、紧集、一致连续、映射、算子、测度等建立在现代ZF集合公理基础上的概念，请参看下册，本书可作为实变、复变、泛函、场论、数学物理方程、概率论、微分几何前置课程，扩展性相当强。(If you want to understand the metric space, topological space, compact, uniform continuity, mapping, operator, measure set up on the basis of the m