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A Lean companion to Analysis I

Almost 20 years ago, I wrote a textbook in real analysis called “Analysis I”. It was intended to complement the many good available analysis textbooks out there by focusing more on foun…

(I do not however plan on hosting “official” solutions to the exercises in this companion; instead, feel free to create forks of the repository in which these sorries are filled in.) As such, this companion could also be used as an introduction to Lean and Mathlib as well as to real analysis (somewhat in the spirit of the “ Natural number game “, which in fact has significant thematic overlap with Chapter 2 of my text). (One technical note: for my own convenience, I have placed this companion as a subdirectory of another one of my repositories, which was aimed at formalizing the theory of orders of magnitude discussed in this previous blog post.

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