Published on: 2025-06-11 12:55:37
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 foundational issues, such as the construction of the natural numbers, integers, rational numbers, and reals, as well as providing enough set theory and logic to allow students to develop proofs at high levels of rigor. While some proof assistants such as Coq or Agda were well established when the book was written, fo
Keywords: exercises lean mathlib natural numbers
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