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Ruelle Sourdis
Ruelle is a surname of French origin. It may refer to: People * David Ruelle, Belgian-French mathematical physicist *Ruelle (singer), American singer-songwriter Places * Ruelle-sur-Touvre, commune in the Charente department in southwestern France Mathematics *Ruelle operator *Ruelle zeta function * Ruelle-Perron-Frobenius theorem See also * Ruel (other) Ruel is a surname of French origin. It may refer to: People * Antoine Ruel, Magic: The Gathering player * Claude Ruel, hockey coach * Jean Ruel, French botanist * Muddy Ruel, baseball coach * Olivier Ruel, Magic: The Gathering player * Pat Ruel, ...
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Surname
In some cultures, a surname, family name, or last name is the portion of one's personal name that indicates one's family, tribe or community. Practices vary by culture. The family name may be placed at either the start of a person's full name, as the forename, or at the end; the number of surnames given to an individual also varies. As the surname indicates genetic inheritance, all members of a family unit may have identical surnames or there may be variations; for example, a woman might marry and have a child, but later remarry and have another child by a different father, and as such both children could have different surnames. It is common to see two or more words in a surname, such as in compound surnames. Compound surnames can be composed of separate names, such as in traditional Spanish culture, they can be hyphenated together, or may contain prefixes. Using names has been documented in even the oldest historical records. Examples of surnames are documented in the 11th ...
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French Language
French ( or ) is a Romance language of the Indo-European family. It descended from the Vulgar Latin of the Roman Empire, as did all Romance languages. French evolved from Gallo-Romance, the Latin spoken in Gaul, and more specifically in Northern Gaul. Its closest relatives are the other langues d'oïl—languages historically spoken in northern France and in southern Belgium, which French ( Francien) largely supplanted. French was also influenced by native Celtic languages of Northern Roman Gaul like Gallia Belgica and by the ( Germanic) Frankish language of the post-Roman Frankish invaders. Today, owing to France's past overseas expansion, there are numerous French-based creole languages, most notably Haitian Creole. A French-speaking person or nation may be referred to as Francophone in both English and French. French is an official language in 29 countries across multiple continents, most of which are members of the ''Organisation internationale de la Francophonie'' ...
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David Ruelle
David Pierre Ruelle (; born 20 August 1935) is a Belgian mathematical physicist, naturalized French. He has worked on statistical physics and dynamical systems. With Floris Takens, Ruelle coined the term ''strange attractor'', and developed a new theory of turbulence. Biography Ruelle studied physics at the Université Libre de Bruxelles, obtaining a PhD degree in 1959 under the supervision of Res Jost. He spent two years (1960–1962) at the ETH Zurich, and another two years (1962–1964) at the Institute for Advanced Study in Princeton, New Jersey. In 1964, he became professor at the Institut des Hautes Études Scientifiques in Bures-sur-Yvette, France. Since 2000, he has been an emeritus professor at IHES and distinguished visiting professor at Rutgers University. David Ruelle made fundamental contributions in various aspects of mathematical physics. In quantum field theory, the most important contribution is the rigorous formulation of scattering processes based on Wigh ...
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Ruelle (singer)
Maggie Eckford or Margaret Eckford (born November 21, 1985), known by her stage name Ruelle, is an American singer-songwriter. Her music has been used on television series such as the opening theme songs of '' Dynasties'' ("Game of Survival"), '' Shadowhunters'' ("This Is the Hunt"), and '' The Shannara Chronicles'' ("Until We Go Down"). Background Born the middle child of three sisters, Eckford grew up in Hattiesburg, Mississippi and attended a private Christian high school. She attended music school in Sydney, Australia. Ruelle is now based in Nashville, Tennessee. Her mother's family owns a legacy music store in Wales, where her interest for music began. Ruelle's first two albums, ''For What It's Worth'' (2010) and ''Show and Tell'' (2012), released under her birth name, Maggie Eckford, were indie pop. She then adopted the stage name, the French word , due to its French roots and its multiple meanings, and moved towards electronic pop with EPs, ''Up in Flames'' (2015 ...
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Ruelle-sur-Touvre
Ruelle-sur-Touvre is a commune in the Charente department in southwestern France. Population International relations The commune has been twinned with Amstetten, Lower Austria since 1972 and Banbridge in Northern Ireland since 1994. See also *Communes of the Charente department The following is a list of the 364 communes of the Charente department of France. The communes cooperate in the following intercommunalities (as of 2020):Official site
Communes of Charente
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Ruelle Operator
Ruelle is a surname of French origin. It may refer to: People * David Ruelle, Belgian-French mathematical physicist *Ruelle (singer), American singer-songwriter Places *Ruelle-sur-Touvre, commune in the Charente department in southwestern France Mathematics * Ruelle operator *Ruelle zeta function In mathematics, the Ruelle zeta function is a zeta function associated with a dynamical system. It is named after mathematical physicist David Ruelle. Formal definition Let ''f'' be a function defined on a manifold ''M'', such that the set of fix ... * Ruelle-Perron-Frobenius theorem See also * Ruel (other) {{disambig ...
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Ruelle Zeta Function
In mathematics, the Ruelle zeta function is a zeta function associated with a dynamical system. It is named after mathematical physicist David Ruelle. Formal definition Let ''f'' be a function defined on a manifold ''M'', such that the set of fixed points Fix(''f'' ''n'') is finite for all ''n'' > 1. Further let ''φ'' be a function on ''M'' with values in ''d'' × ''d'' complex matrices. The zeta function of the first kind isTerras (2010) p. 28 : \zeta(z) = \exp\left( \sum_ \frac \sum_ \operatorname \left( \prod_^ \varphi(f^k(x)) \right) \right) Examples In the special case ''d'' = 1, ''φ'' = 1, we have : \zeta(z) = \exp\left( \sum_ \frac m \left, \operatorname(f^m)\ \right) which is the Artin–Mazur zeta function. The Ihara zeta function In mathematics ...
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