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＜E-Book＞
Operator Approximant Problems Arising from Quantum Theory / by Philip J. Maher

Edition	1st ed. 2017.
Publisher	(Cham : Springer International Publishing : Imprint: Birkhäuser)
Year	2017
Size	X, 106 p. 6 illus : online resource
Authors	*Maher, Philip J author SpringerLink (Online service)
Subjects	LCSH:Operator theory LCSH:Functional analysis LCSH:Approximation theory LCSH:Quantum physics FREE:Operator Theory FREE:Functional Analysis FREE:Approximations and Expansions FREE:Quantum Physics
Notes	What this book is about: approximants -- Preliminaries -- Self-adjoint and positive approximants -- Commutator approximants -- Spectral, and numerical range, approximants -- Unitary, isometric and partially isometric approximation of positive operators This book offers an account of a number of aspects of operator theory, mainly developed since the 1980s, whose problems have their roots in quantum theory. The research presented is in non-commutative operator approximation theory or, to use Halmos' terminology, in operator approximants. Focusing on the concept of approximants, this self-contained book is suitable for graduate courses HTTP:URL=https://doi.org/10.1007/978-3-319-61170-9

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