This book studies properties of pseudo-differential operators arising in
quantum mechanics as bounded linear operators on $ L^ä2ü(BbbR^änü) $.
The results and methods should be of interest to graduate students and
mathematicians working in Fourier analysis, operator theory,
pseudo-differential operators and mathematical physics. Background
materials are given in adequate detail to enable a graduate student to
proceed rapidly from the very basics to the frontier of resarch in an
area of operator theory.