According to the great mathematician Paul Erdös, God maintains perfect mathematical proofs in The Book. This book presents the authors candidates for such "per

Many students have trouble the first time they take a mathematics course in which proofs play a significant role. This new edition of Velleman's successful text

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

Proofs and Refutations is for those interested in the methodology, philosophy and history of mathematics.

The primary purpose of this undergraduate text is to teach students to do mathematical proofs. It enables readers to recognize the elements that constitute an a