This book provides a comprehensive introduction to the mathematical
foundations of economics, from basic set theory to fixed point theorems
and constrained optimization. Rather than simply offer a collection of
problem-solving techniques, the book emphasizes the unifying
mathematical principles that underlie economics. Features include an
extended presentation of separation theorems and their applications, an
account of constraint qualification in constrained optimization, and an
introduction to monotone comparative statics. These topics are developed
by way of more than 800 exercises. The book is designed to be used as a
graduate text, a resource for self-study, and a reference for the
professional economist.