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Bessel potential

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  • Particle in a spherically symmetric potential — In quantum mechanics, the particle in a spherically symmetric potential describes the dynamics of a particle in a potential which has spherical symmetry. The Hamiltonian for such a system has the form:hat{H} = frac{hat{p}^2}{2m 0} + V(r)where m 0 …   Wikipedia

  • Hilbert space — For the Hilbert space filling curve, see Hilbert curve. Hilbert spaces can be used to study the harmonics of vibrating strings. The mathematical concept of a Hilbert space, named after David Hilbert, generalizes the notion of Euclidean space. It… …   Wikipedia

  • Multiplier (Fourier analysis) — In Fourier analysis, a multiplier operator is a type of linear operator, or transformation of functions. These operators act on a function by altering its Fourier transform. Specifically they multiply the Fourier transform of a function by a… …   Wikipedia

  • Funktionenraum — Ein Funktionenraum ist eine Menge von Funktionen,[1] die alle denselben Definitionsbereich besitzen. Wenn diese Menge zudem durch eine geeignete Wahl der Vektoraddition und Skalarmultiplikation zu einem Vektorraum gemacht werden kann, dann… …   Deutsch Wikipedia

  • Common integrals in quantum field theory — There are common integrals in quantum field theory that appear repeatedly.[1] These integrals are all variations and generalizations of gaussian integrals to the complex plane and to multiple dimensions. Other integrals can be approximated by… …   Wikipedia

  • List of letters used in mathematics and science — Some common conventions: * Intensive quantities in physics are usually denoted with minuscules, while extensive are denoted with capital letters. * Most symbols are written in italics. * Vectors are bold. * Sets of numbers are blackboard… …   Wikipedia

  • Freemasonry — Freemasons redirects here. For other uses, see Freemasons (disambiguation). Masonic redirects here. For the ghost town in California, see Masonic, California. The Masonic Square and Compasses. (Found with or without the letter G) …   Wikipedia

  • Cylindrical harmonics — In mathematics, the cylindrical harmonics are a set of linearly independent solutions to Laplace s differential equation, , expressed in cylindrical coordinates, ρ (radial coordinate), φ (polar angle), and z (height). Each function Vn(k) is the… …   Wikipedia

  • Erde, Erdmessung [1] — Erde, Erdmessung (Gradmessung). Nach der heute als gültig betrachteten Hypothese über die Entstehung des Sonnensystems ist die Erde ein Körper, der sich aus einem rotierenden kosmischen Gasball durch Abkühlung und Zusammenziehung allmählich… …   Lexikon der gesamten Technik

  • Mathematics of radio engineering — A complex valued function. The mathematics of radio engineering is a pleasant and very useful subject. This article is an attempt to provide a reasonably comprehensive summary of this almost limitless topic. While the ideas have historically… …   Wikipedia

  • Optical tweezers — (originally called single beam gradient force trap ) are scientific instruments that use a highly focused laser beam to provide an attractive or repulsive force (typically on the order of piconewtons), depending on the refractive index mismatch… …   Wikipedia

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