My Favorite books Functional Analysis, by W. Rudin Functional analysis: entering Hilbert space, by Vagn Lundsgaard Hanse Functional Analysis, by Kosaku Yoshida Functional Analysis, by Erdogan S. Suhubi A Course in Functional Analysis, by John B. Conway The Volume of Convex Bodies and Banach Space Geometry, by Gilles Pisier Introduction to Banach spaces and their geometry, by Bernard Beauzamy Classical Banach spaces I and II, by Joram Lindenstrauss, Lior Tzafriri Classical Banach spaces: Sequence spaces, by Joram Lindenstrauss, Lior Tzafriri Linear Operators Set (of three volumes), by Nelson Dunford, Jacob T. Schwartz Normed linear spaces, by Mahlon Marsh Day A Hilbert Space Problem Book, by P.R. Halmos Sequences and series in Banach spaces, by Joseph Diestel Nonstandard methods in fixed point theory, by Asuman Güven Aksoy, Mohamed A. Khamsi Introduction to Metric Spaces and Fixed Point Theory, by Mohamed A. Khamsi, William A. Kirk