This comprehensive textbook on functional analysis is perfect for students with a background in linear algebra, advanced calculus, physics, and engineering.

Covering topics such as introduction to inner-product spaces, normed and metric spaces, and topological spaces, it provides a thorough understanding of the subject.

The book includes complete orthonormal sets, the Hahn-Banach theorem and its consequences, spectral notions, square roots, and a spectral decomposition theorem, among other related subjects.

With exercises at the end of each chapter to test and reinforce your understanding, this text is an essential resource for anyone looking to deepen their knowledge in functional analysis.