This expanded, revised edition is a thorough and systematic treatment of linear and nonlinear partial differential equations and their varied applications. It contains updated modern examples and applications from diverse fields. Methods and properties of solutions, along with their physical significance, make the book useful for a diverse readership including graduates, researchers, and professionals in mathematics, physics and engineering.
A very informative textbook on (primarily non-linear) PDEs. The book covers a wide range of topics such as variational principles, characteristics, conservation laws, shock waves, dispersive waves, reaction-diffusion equations, solitons, inverse scattering transform, asymptotic methods and others (many of which cannot be found either in such a detail or altogether in Evans). While the topics are advanced, the exposition is quite simple (considering how advanced the topics are) and definitely less formal/rigorous than in Evans, with the focus on the analysis of concrete PDEs/problems rather than on general theorems and proofs. Not much functional analysis is required (not even in the parts on variational principles; real analysis/basic concepts from functional analysis will generally suffice). I recommend the book to anyone who is interested in advanced PDE techniques and their direct applications to a vast range of (natural) real-world phenomena.