Contents: Some ExamplesLinear ProblemsGreen's FunctionMethod of Complementary FunctionsMethod of AdjointsMethod of ChasingSecond Order EquationsError Estimates

Written in a clear and accurate language that students can understand, Trench's new book minimizes the number of explicitly stated theorems and definitions. Ins

The last fifty years have witnessed several monographs and hundreds of research articles on the theory, constructive methods and wide spectrum of applications o

This book introduces the method of lower and upper solutions for ordinary differential equations. This method is known to be both easy and powerful to solve sec

Building on the basic techniques of separation of variables and Fourier series, the book presents the solution of boundary-value problems for basic partial diff