Introduction to Hilbert Space and the Theory of Spectral Multiplicity (2nd Edition)

This classic textbook by Prof. Halmos gives a clear, readable introductory treatment of Hilbert Space and the multiplicity theory of continuous spectra.

$4.95

Finite-Dimensional Vector Spaces by Paul R. Halmos (2nd Edition)

This is a classic reference book on Linear Algebra, especially if you are looking for an abstract approach to linear algebra.

$5.95

Naive Set Theory by Paul R. Halmos

This book is a classic introduction to set theory, which tells the beginning student of advanced mathematics the basic set-theoretic facts of life.

$4.95