George david wikipedia

Download as PDF Printable version. In other projects. Wikidata item. American businessman. For the Greek businessman, see George A. Life and career [ edit ]. References [ edit ]. Encyclopedia of World Biography. Advameg, Inc. Retrieved The Hartford Courant. Early life and education [ edit ]. Career [ edit ]. Organic farming [ edit ].

Awards and Honours [ edit ]. References [ edit ]. David named Chairman emeritus". Bloomberg News. Archived from the original on 18 October Bilderberg Group. Archived from the original on 2 February Retrieved 8 February David and Marina Spiropoulos Fellows Award". Vida personal [ editar ]. Carrera [ editar ]. Premios y honores [ editar ].

George david wikipedia: George Alkiviades David CMG OBE

Cargos [ editar ]. Trabajo [ editar ]. Influencia en las contrataciones [ editar ]. Publicaciones seleccionadas [ editar ]. Reconocimientos [ editar ]. Birkhoff was also a contributor to the development of general relativity. He wrote on the foundations of relativity and quantum mechanics, publishing with R. Langer the monograph Relativity and Modern Physics in InBirkhoff also proved that the Schwarzschild geometry is the unique spherically symmetric solution of the Einstein field equations.

A consequence is that black holes are not merely a mathematical curiosity, but could result from any spherical star having sufficient mass. His theorem was later used to develop the Oppenheimer—Snyder model. Inhe published his Dynamical Systems. Birkhoff's most durable result has been his discovery of what is now called the ergodic theorem.

George david wikipedia: George David No higher resolution available.

Combining insights from physics on the ergodic hypothesis with measure theorythis theorem solved, at least in principle, a fundamental problem of statistical mechanics. The ergodic theorem has also had repercussions for dynamics, probability theorygroup theoryand functional analysis. He also worked on number theorythe Riemann—Hilbert problemand the four colour problem.

He proposed an axiomatization of Euclidean geometry different from Hilbert's see Birkhoff's axioms ; this work culminated in his text Basic Geometry His Aesthetic Measure proposed a mathematical theory of aesthetics. His Electricity as a Fluid combined his ideas on philosophy and science.

George david wikipedia: George Alfred Lawrence David (born April

His theory of gravitation is also puzzling since Birkhoff knew but didn't seem to mind that his theory allows as sources only matter which is a perfect fluid in which the speed of sound must equal the speed of light. Birkhoff believed that fellowships from foreign nations would improve the mathematic standards in the United States, [ 12 ] though he wanted to raise the standards for fellowships, believing that the qualifications in less-developed countries were different and that access should be limited.

Albert Einstein and Norbert Wieneramong others, accused [ 15 ] [ 16 ] [ 17 ] Birkhoff of advocating anti-Semitic selection processes. During the s, when many Jewish mathematicians fled Europe and tried to obtain positions in the United States, Birkhoff is alleged to have influenced the selection process at American institutions to exclude Jews.

There could be many reasons why Birkhoff did not take steps to appoint him".

George david wikipedia: George David is the Chairman and

Birkhoff was also close to Jewish mathematician Stanislaw Ulam. Gian-Carlo Rota writes: "Like other persons rumored to be anti-Semitic, he would occasionally feel the urge to shower his protective instincts on some good-looking young Jew. Ulam's sparkling manners were diametrically opposite to Birkhoff's hard-working, aggressive, touchy personality.

Birkhoff tried to keep Ulam at Harvard, but his colleagues balked at the idea. Summarizing Birkhoff's selection process, fellow mathematician Oswald Veblen would write: [ 4 ]. While Birkhoff was subject to as many prejudices as most of us, he kept always what most of us lose as we grow older, the power to see people and events simply and naively rather than with reference to current opinion.

Birkhoff married Margaret Elizabeth Graftus in