Mathematical analysis is a basic course of college mathematics and a stepping stone to modern mathematics. Teaching materials are the most important part of self-study, and the first book "Calculus Course" in Russia is a masterpiece of classical calculus, which can step into the hall of mathematics step by step.
Zhang Zhusheng's new lecture on mathematical analysis is the first in China, with fluent language and detailed explanation. What is particularly commendable is that it contains the elementary proof and differential form of the fixed point theorem. In addition, spivak's first book Calculus in the United States is modern, enlightening, rigorous and persistent.