This is a textbook for an introductory graduate course on partial differential equations. Han focuses on linear equations of first and second order. An importan

Methods of solution for partial differential equations (PDEs) used in mathematics, science, and engineering are clarified in this self-contained source. The rea

Does entropy really increase no matter what we do? Can light pass through a Big Bang? What is certain about the Heisenberg uncertainty principle? Many laws of p

Partial differential equations are fundamental to the modeling of natural phenomena. The desire to understand the solutions of these equations has always had a

This is the second edition of the now definitive text on partial differential equations (PDE). It offers a comprehensive survey of modern techniques in the theo