The geometry of Banach spaces is a rich, beautiful, and rewarding subject. In this book the authors explore the isomorphic theory of Banach spaces and techniques, using the unifying viewpoint of basic sequences. Banach space theory can function as a window to such advanced concepts as harmonic analysis, and beyond into signal processing, economics and physics. The book is suitable for a semester-long graduate course and it will become a standard reference and textbook in the area.

This book emphasizes the isomorphic theory of Banach spaces and techniques using the unifying viewpoint of basic sequences. Its aim is to provide the reader with the necessary technical tools and background to reach the frontiers of research without the introduction of too many extraneous concepts. Detailed and accessible proofs are included, as are a variety of exercises and problems.

Bases and Basic Sequences.- The classical sequence spaces.- Special types of bases.- Spaces of continuous functions.- L_1(\mu)-spaces and C(K)-spaces.- L_p(\mu)-spaces, 1 \leq p < \infty.- Factorization Theory.- Absolutely Summing Operators.- Symmetric Bases and Greedy Bases.- Ramsey methods.- Ultraproducts.