Here are some suggestions for further reading, organized chapter by chapter, for anyone who’d like to learn more about the mathematical topics that Joff and I discussed in our letters or that arose elsewhere in this book.
I’ve tried to recommend books that are friendly and accessible. Most require a knowledge of first-year calculus but not much beyond that.
For convenience, books are cited briefly here by author and year of publication. More detailed information appears in the bibliography.
Dunham (2004) traces the development of rigor in calculus, including the modern definitions of limits and continuity.
The Fibonacci ...