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Approximation d'Euler — Méthode d Euler En mathématiques, la méthode d Euler, nommée ainsi en l honneur du mathématicien Leonhard Euler, est une procédure numérique pour résoudre par approximation des équations différentielles du premier ordre avec une condition… … Wikipédia en Français
Born-Oppenheimer approximation — In quantum chemistry, the computation of the energy and wavefunction of an average size molecule is a formidable task that is alleviated by the Born Oppenheimer (BO) approximation. For instance the benzene molecule consists of 12 nuclei and 42… … Wikipedia
Born approximation — Not to be confused with the Born–Oppenheimer approximation. In scattering theory and, in particular in quantum mechanics, the Born approximation consists of taking the incident field in place of the total field as the driving field at each point… … Wikipedia
WKB approximation — In physics, the WKB (Wentzel–Kramers–Brillouin) approximation, also known as WKBJ (Wentzel–Kramers–Brillouin–Jeffreys) approximation, is the most familiar example of a semiclassical calculation in quantum mechanics in which the wavefunction is… … Wikipedia
European Union legislative procedure — The legislative procedures of the European Union are the ways in which the European Union enacts legislation. The procedure used for any given legislative proposal depends on the policy area in question. The rules governing which procedure… … Wikipedia
Bianchi procedure — longitudinal division of the bowel and its mesenteric blood supply followed by end to end approximation of the bowel segments, used for the treatment of short bowel syndrome … Medical dictionary
Field electron emission — It is requested that a diagram or diagrams be included in this article to improve its quality. For more information, refer to discussion on this page and/or the listing at Wikipedia:Requested images. Field emission (FE) (also known as field… … Wikipedia
analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… … Universalium
chemical bonding — ▪ chemistry Introduction any of the interactions that account for the association of atoms into molecules, ions, crystals, and other stable species that make up the familiar substances of the everyday world. When atoms approach one another … Universalium
FORME — L’histoire du concept de forme et des théories de la forme est des plus singulières. Nous vivons dans un monde constitué de formes naturelles. Celles ci sont omniprésentes dans notre environnement et dans les représentations que nous nous en… … Encyclopédie Universelle
Polymer field theory — A polymer field theory within the framework of statistical mechanics is a statistical field theory, describing the statistical behavior of a neutral or charged polymer system within the field theoretic approach.It can be derived by transforming… … Wikipedia
