Introduction to Spectral Theory in Hilbert Space - (Dover Books on Mathematics) by Gilbert Helmberg (Paperback)

This comprehensive guide to Hilbert space and bounded self-adjoint operators is perfect for readers with a background in analysis and analytic geometry.

With an emphasis on spectral analysis, this book provides a detailed exploration of the general theory of linear operators, including their spectral decomposition.

The text also covers unbounded self-adjoint operators and includes extensive appendixes for further reference.

Whether you're a student or professional looking to deepen your understanding of Hilbert space, this is an essential resource for anyone interested in the field.