Book of Donmon Teith

{\it Elements of Operatory Theory} is aimed at graduate students as well as a new generation of mathematicians and scientists who need to apply operator theory

Operator theory is a significant part of many important areas of modern mathematics: functional analysis, differential equations, index theory, representation t

rii application of linear operators on a Hilbert space. We begin with a chapter on the geometry of Hilbert space and then proceed to the spectral theory of comp

A one-sentence definition of operator theory could be: The study of (linear) continuous operations between topological vector spaces, these being in general (bu