defect of operator
Смотреть что такое "defect of operator" в других словарях:
Defect detector — Overview of a wheel impact detector installation A defect detector is a device used on railroads to detect axle and signal problems in passing trains. The detectors are normally integrated into the tracks and often include sensors to detect… … Wikipedia
Operator K-theory — In mathematics, operator K theory is a variant of K theory on the category of Banach algebras (In most applications, these Banach algebras are C* algebras). Its basic feature that distinguishes it from algebraic K theory is that it has a Bott… … Wikipedia
Contraction (operator theory) — In operator theory, a bounded operator T: X → Y between normed vector spaces X and Y is said to be a contraction if its operator norm ||T|| ≤ 1. Every bounded operator becomes a contraction after suitable scaling. The analysis of… … Wikipedia
Dilation (operator theory) — In operator theory, a dilation of an operator T on a Hilbert space H is an operator on a larger Hilbert space K , whose restriction to H is T. More formally, let T be a bounded operator on some Hilbert space H, and H be a subspace of a larger… … Wikipedia
Welding defect — A welding defect is any flaw that compromises the usefulness of the finished weldment. According to the American Society of Mechanical Engineers (ASME) welding defect causes are broken down into the following percentages: 41% poor process… … Wikipedia
Order operator — In quantum field theory, an order operator or an order field is a quantum field version of Landau s order parameter whose expectation value characterizes phase transitions. There exists a dual version of it, the disorder operator or disorder… … Wikipedia
Carrier scattering — Defect types include atom vacancies, adatoms, steps, and kinks which occur most frequently at surfaces due to finite material size causing crystal discontinuity. What all types of defects have in common, whether they be surface or bulk, is that… … Wikipedia
Extensions of symmetric operators — In functional analysis, one is interested in extensions of symmetric operators acting on a Hilbert space. Of particular importance is the existence, and sometimes explicit constructions, of self adjoint extensions. This problem arises, for… … Wikipedia
Glossary of rail terminology — Rail transport Operations Track Maintenance High speed Gauge Stations … Wikipedia
2009–2011 Toyota vehicle recalls — Two of the vehicles under recall: the Toyota Camry (top) and the Toyota Corolla Three separate but related recalls of automobiles by Toy … Wikipedia
List of pipeline accidents — The following is a list of pipeline accidents: This is an incomplete list, which may never be able to satisfy particular standards for completeness. You can help by expanding it with reliably sourced entries. Contents 1 Bel … Wikipedia
