Marjorie Trumaine, a freelance indexer from rural North Dakota in the 1960s, risks her life to help local law enforcement track down a missing, disabled girl. D

This book is an introduction to the language and standard proof methods of mathematics. It is a bridge from the computational courses (such as calculus or diffe

The sky is blue—and so are blueberries! Tomatoes are red, just like ladybugs and stop signs! Flowers and giraffes are yellow—school buses, too! See all the

Lance Rips describes a unified theory of natural deductive reasoning and fashions a working model of deduction, with strong experimental support, that is capabl

In this “captivating, heartfelt, and utterly unique tale” (Emily Giffin, author of The Lies That Bind), a brilliant physicist studying the nature of time em