Functional Analysis in Applied Mathematics and Engineering concentrates on material that will be useful to control engineers from the disciplines of electrical, mechanical, and aerospace engineering. This text/reference discusses rudimentary topology, Banach's fixed point theorem with applications, L-spaces, density theorems for testfunctions, infinite dimensional spaces, bounded linear operators, Hilbert spaces, Fourier series, open mapping and closed graph theorems, compact operators, Hilbert-Schmidt operators, Volterra equations, Sobolev spaces, Hilbert Uniqueness Method, and boundary element methods.V