This excerpt from Saint X, Alexis Schaitkin's riveting debut, contains the first section of the book. Hailed as a “marvel of a book” and “brilliant and un

A New York Times Notable Book of 2020 "'Saint X' is hypnotic. Schaitkin's characters...are so intelligent and distinctive it feels not just easy, but necessary,

This first-year calculus book is centered around the use of infinitesimals. It contains all the ordinary calculus topics, including the basic concepts of the de