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This book should be of interest to students of animal ecology;
ecology.
This expert volume in the Diagnostic Pathology series is an
excellent point-of-care resource for practitioners at all levels of
experience and training. Covering all areas of nonneoplastic
pediatric pathology, it incorporates the most recent clinical,
pathologic, and molecular knowledge in this challenging field to
provide a comprehensive overview of all key issues relevant to
today's practice. Richly illustrated and easy to use, Diagnostic
Pathology: Nonneoplastic Pediatrics is a one-stop reference for
accurate, complete pathology reports, ideal as a day-to-day
reference for both pediatric and general pathologists or as a
reliable training resource. Provides a clear framework for a better
understanding of the clinical and histopathologic appearances of
more than 270 nonneoplastic entities, covering every organ system
with a focus on reactive, infectious, congenital, and genetic
conditions Covers significant advances in this complex field,
including recent molecular discoveries and updated disease
entities, new information on multiple immunologic disorders,
changes and expansions to several classification systems (such as
WHO, Banff, and ISSVA), and updates in other scoring systems
Contains new chapters on manifestations of pediatric COVID-19
infection, tumoral calcinosis, multiple skeletal dysplasia,
skeletal muscle, collagenous gastritis and colitis, adenovirus
appendicitis, intestinal pseudoobstruction, disorders of sexual
development, and Kikuchi disease Includes approximately 3,000
high-quality clinical and histologic images, gross pathology
images, radiologic images, and full-color illustrations to help
practicing and in-training pathologists reach a confident
diagnosis-as well as nearly 200 additional images online Employs
consistently templated chapters and bulleted content for quick,
expert reference at the point of care Includes an eBook version
that enables you to access all text, figures, and references, with
the ability to search, customize your content, make notes and
highlights, and have content read aloud
This book should be of interest to students of animal ecology;
ecology.
What could be regarded as the beginning of a theory of commutators
AB - BA of operators A and B on a Hilbert space, considered as a
dis cipline in itself, goes back at least to the two papers of Weyl
[3] {1928} and von Neumann [2] {1931} on quantum mechanics and the
commuta tion relations occurring there. Here A and B were unbounded
self-adjoint operators satisfying the relation AB - BA = iI, in
some appropriate sense, and the problem was that of establishing
the essential uniqueness of the pair A and B. The study of
commutators of bounded operators on a Hilbert space has a more
recent origin, which can probably be pinpointed as the paper of
Wintner [6] {1947}. An investigation of a few related topics in the
subject is the main concern of this brief monograph. The ensuing
work considers commuting or "almost" commuting quantities A and B,
usually bounded or unbounded operators on a Hilbert space, but
occasionally regarded as elements of some normed space. An attempt
is made to stress the role of the commutator AB - BA, and to
investigate its properties, as well as those of its components A
and B when the latter are subject to various restrictions. Some
applica tions of the results obtained are made to quantum
mechanics, perturba tion theory, Laurent and Toeplitz operators,
singular integral trans formations, and Jacobi matrices.
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