relation operator
21Rotation operator (quantum mechanics) — This article concerns the rotation operator, as it appears in quantum mechanics.The translation operatorThe rotation operator ,mbox{R}(z, t), with the first argument ,z indicating the rotation axis and the second ,t = heta the rotation angle, is… …
22Integration by parts operator — In mathematics, an integration by parts operator is a linear operator used to formulate integration by parts formulae; the most interesting examples of integration by parts operators occur in infinite dimensional settings and find uses in… …
23Modal operator — In modal logic, a modal operator is an operator which forms propositions from propositions. In general, a modal operator has the formal property of being non truth functional, and is intuitively characterised by expressing a modal attitude (such… …
24Clausius–Clapeyron relation — The Clausius–Clapeyron relation, named after Rudolf Clausius and Benoît Paul Émile Clapeyron, who defined it sometime after 1834, is a way of characterizing a discontinuous phase transition between two phases of matter. On a pressure–temperature… …
25Clausius-Clapeyron relation — The Clausius Clapeyron relation, named after Rudolf Clausius and Émile Clapeyron, is a way of characterizing the phase transition between two phases of matter, such as solid and liquid. It is commonly learned in class. On a pressure temperature… …
26Hecke operator — In mathematics, in particular in the theory of modular forms, a Hecke operator, studied by Hecke (1937), is a certain kind of averaging operator that plays a significant role in the structure of vector spaces of modular forms and more… …
27Schröder–Bernstein theorems for operator algebras — The Schröder–Bernstein theorem, from set theory, has analogs in the context operator algebras. This article discusses such operator algebraic results. For von Neumann algebras Suppose M is a von Neumann algebra and E , F are projections in M. Let …
28Mobile Network Operator — Eine Mobilfunkgesellschaft ist – als Mobilfunkbetreiber (MNO Mobile Network Operator) – ein Unternehmen, das öffentliche Mobilfunkdienste für Privat und Geschäftskunden anbietet. Zu diesem Zweck beantragt oder erwirbt (z. B. mittels einer… …
29Einstein-Relation — In der Statistischen Physik leitet sich im Rahmen der sog. „linear response“ Theorie das Fluktuations Dissipations Theorem quantitativ rigoros aus dem statistischen Operator des Systems ab, und zwar am besten mit Hilfe der sog. LSZ Reduktion oder …
30Dirac-Operator — Die Dirac Gleichung beschreibt in der Quantenmechanik die Eigenschaften und das Verhalten des Elektrons (und anderer Spin 1/2 Teilchen) und berücksichtigt dabei die spezielle Relativitätstheorie. Sie wurde 1928 von Paul Dirac entwickelt. Aus ihr… …
