Théorie moderne du portefeuilleLa théorie moderne du portefeuille est une théorie financière développée en 1952 par Harry Markowitz. Elle expose comment des investisseurs rationnels utilisent la diversification afin d'optimiser leur portefeuille, et quel devrait être le prix d'un actif étant donné son risque par rapport au risque moyen du marché. Cette théorie fait appel aux concepts de frontière efficiente, coefficient bêta, droite de marché des capitaux et droite de marché des titres. Sa formalisation la plus accomplie est le modèle d'évaluation des actifs financiers ou MEDAF.
Gajski–Kuhn chartThe Gajski–Kuhn chart (or Y diagram) depicts the different perspectives in VLSI hardware design. Mostly, it is used for the development of integrated circuits. Daniel Gajski and Robert Kuhn developed it in 1983. In 1985, Robert Walker and Donald Thomas refined it. According to this model, the development of hardware is perceived within three domains that are depicted as three axis and produce a Y. Along these axis, the abstraction levels that describe the degree of abstraction.
Daniel HumairDaniel Humair, né le à Genève, est un batteur et compositeur de jazz ainsi qu'un peintre suisse. Bénéficiant de la reconnaissance de tous, il est plus facile de citer les musiciens avec lesquels il n'a pas joué que l'inverse, car il a côtoyé la plupart des jazzmen des 50 dernières années : Don Byas, Lucky Thompson, Kenny Dorham, Bud Powell, Oscar Pettiford, Chet Baker, Eric Dolphy.
Joseph E. KuhnJoseph E. Kuhn (June 14, 1864 – November 12, 1935) was a career officer in the United States Army. He attained the rank of major general, and was most notable for his command of the 79th Division during World War I, and his post-war commands of IX Corps, Schofield Barracks, and Vancouver Barracks. A native of Leavenworth, Kansas, Kuhn graduated at the top of his United States Military Academy (USMA) class of 1885; assigned to the Engineers, he carried out rivers and harbors construction and maintenance assignments in Detroit and San Francisco.
Variété différentielleEn mathématiques, les variétés différentielles ou variétés différentiables sont les objets de base de la topologie différentielle et de la géométrie différentielle. Il s'agit de variétés, « espaces courbes » localement modelés sur l'espace euclidien de dimension n, sur lesquelles il est possible de généraliser une bonne part des opérations du calcul différentiel et intégral. Une variété différentielle se définit donc d'abord par la donnée d'une variété topologique, espace topologique localement homéomorphe à l'espace R.
Portfolio optimizationPortfolio optimization is the process of selecting the best portfolio (asset distribution), out of the set of all portfolios being considered, according to some objective. The objective typically maximizes factors such as expected return, and minimizes costs like financial risk. Factors being considered may range from tangible (such as assets, liabilities, earnings or other fundamentals) to intangible (such as selective divestment). Modern portfolio theory was introduced in a 1952 doctoral thesis by Harry Markowitz; see Markowitz model.
Daniel Bradford DevoreDaniel Bradford Devore (May 14, 1860 – March 10, 1956) was a United States Army officer in the late 19th and early 20th centuries. In World War I he became a brigadier general and commanded a regiment of the US army. Devore was born on May 14, 1860, in Monroe County, Ohio. he graduated from the United States Military Academy (USMA) at West Point, New York in 1885. His classmates included Willard A. Holbrook, Robert A. Brown, Robert Michie, Beaumont B. Buck, Henry P. McCain, Joseph E. Kuhn, Charles H. Muir, John D.
Isobel Miller KuhnIsobel Selina Miller Kuhn, born Isobel Selina Miller, aka, "Belle" (December 17, 1901 – March 20, 1957), known as Isobel Kuhn, was a Canadian Christian missionary to the Lisu people of Yunnan Province, China, and northern Thailand. She served with the China Inland Mission, along with her husband, John, as a Bible translator, church planter, Bible teacher, evangelist and authored nine books about her experiences. Isobel Selina Miller was born in Toronto, Ontario, Canada, and moved with her family to Vancouver, British Columbia, when she was eleven years old.
Conditions de Karush-Kuhn-TuckerEn mathématiques, les conditions de Karush-Kuhn-Tucker ou anciennement conditions de Kuhn-Tucker sont une généralisation des multiplicateurs de Lagrange qui permettent de résoudre des problèmes d'optimisation sous contraintes non linéaires d'inégalités. Soit , une fonction appelée fonction objectif, et des fonctions , , appelées contraintes. On suppose que et les sont de classe C. Le problème à résoudre est le suivant : Si admet un minimum en sous les contraintes pour tout , alors il existe vérifiant les conditions suivantes, dites conditions de Kuhn-Tucker.
Proof by contradictionIn logic, proof by contradiction is a form of proof that establishes the truth or the validity of a proposition, by showing that assuming the proposition to be false leads to a contradiction. Although it is quite freely used in mathematical proofs, not every school of mathematical thought accepts this kind of nonconstructive proof as universally valid. More broadly, proof by contradiction is any form of argument that establishes a statement by arriving at a contradiction, even when the initial assumption is not the negation of the statement to be proved.
