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روبرت كونلي (بالإنجليزية: Robert Connelly)‏ هو رياضياتي أمريكي، ولد في 15 يوليو 1942 في بنسيلفانيا في الولايات المتحدة.

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dbo:abstract روبرت كونلي (بالإنجليزية: Robert Connelly)‏ هو رياضياتي أمريكي، ولد في 15 يوليو 1942 في بنسيلفانيا في الولايات المتحدة. (ar) Robert Connelly (* 15. Juli 1942 in Pennsylvania) ist ein US-amerikanischer Mathematiker, der sich mit diskreter Geometrie und Kombinatorik befasst. Connelly studierte am Carnegie Institute of Technology (Bachelorabschluss 1964) und wurde 1969 bei an der University of Michigan promoviert (Unknotting Close Embeddings of Polyhedra in Codimension Greater Than Three). Seit 1969 ist er Professor an der Cornell University. Er war unter anderem Gastwissenschaftler am IHES, der Syracuse University, Budapest, Dijon, Montreal, Bielefeld (als Empfänger des Humboldt-Forschungspreises), der University of Calgary, der University of Washington in Seattle und der Universität Cambridge. Connelly gab 1977 das erste Beispiel für ein flexibles Polyeder, das ohne Selbstüberschneidung in eine zweite Form überführt werden kann, wobei die Seitenflächen starr bleiben. Nach Cauchy muss ein solches Polyeder nicht-konvex sein. Beispiele mit Selbstüberschneidung waren schon früher bekannt (Oktaeder von Raoul Bricard 1897). Connellys flexibles Polyeder hatte 18 Dreiecksseiten, später wurden einfachere flexible Polyeder gefunden (zum Beispiel von Klaus Steffen). Bei der Transformation jedes flexiblen Polyeders bleibt sein Volumen erhalten. Diesen Satz (Bellows Vermutung) bewies Connelly 1997 mit I. K. Sabitov und Anke Walz (für drei Dimensionen). Connelly löste 2003 zusammen mit Erik Demaine und Günter Rote das Carpenter's Rule Problem (deutsch: Zollstockproblem). Dabei wird gefragt, ob es immer möglich ist, eine kreuzungsfreie starre Polygonkette kontinuierlich zu einer geraden Strecke zu entfalten. Bei dieser Bewegung müssen alle Strecken ihre Länge erhalten und es dürfen sich keine Strecken schneiden. Connelly, Demaine und Rote beantworteten diese Frage positiv. Außerdem befasst sich Connelly mit der Geometrie von Buckminster Fullers Tensegrity-Strukturen. 2012 wurde Connelly Fellow der American Mathematical Society. Der Asteroid (4816) Connelly wurde nach ihm benannt. (de) Robert (Bob) Connelly, adalah matematikawan yang mengkhususkan diri dalam dan . Connelly menerima gelar Ph.D. dari Universitas Michigan pada tahun 1969. Saat ini, ia adalah seorang profesor di Universitas Cornell. Connelly menjadi terkenal karena menemukan yang tertanam. Satu polihedron semacam itu ada di Museum Nasional Sejarah Amerika. Minatnya saat ini termasuk puluhan peraturan dan . Pada tahun 2012, ia menjadi salah satu anggota dari American Mathematical Society. Asteroid dinamai menurut Robert Connelly. (in) Robert Connelly (born July 15, 1942) is a mathematician specializing in discrete geometry and rigidity theory. Connelly received his Ph.D. from University of Michigan in 1969. He is currently a professor at Cornell University. Connelly is best known for discovering embedded flexible polyhedra. One such polyhedron is in the National Museum of American History. His recent interests include tensegrities and the carpenter's rule problem. In 2012 he became a fellow of the American Mathematical Society. Asteroid 4816 Connelly, discovered by Edward Bowell at Lowell Observatory 1981, was named after Robert Connelly. The official naming citation was published by the Minor Planet Center on 18 February 1992 (M.P.C. 19698). (en) Ро́берт Ко́ннелли (англ. Robert Connelly) (род. 15 июля 1942, , Пенсильвания, США) — американский математик, специалист по комбинаторной геометрии и (англ. Structural rigidity). (ru) Роберт Коннеллі (англ. Robert Connelly; нар. 15 липня 1942, Сеуїклі, Пенсільванія, США) — американський математик, фахівець з комбінаторної геометрії і теорії жорсткості. (uk) Robert Connelly (Pensilvânia, 15 de julho de 1942) é um matemático estadunidense, que trabalha com geometria e combinatória. Connelly estudou noa Universidade Carnegie Mellon (bacharelado em 1964), e obteve um doutorado em 1969 na Universidade de Michigan, orientado por , com a tese Unknotting Close Embeddings of Polyhedra in Codimension Greater Than Three. É desde 1969 professor da Universidade Cornell. Em 2012 foi eleito fellow da American Mathematical Society. O asteroide 4816 Connelly é denominado em sua homenagem. (pt)
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dbp:name Robert Connelly (en)
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rdfs:comment روبرت كونلي (بالإنجليزية: Robert Connelly)‏ هو رياضياتي أمريكي، ولد في 15 يوليو 1942 في بنسيلفانيا في الولايات المتحدة. (ar) Robert (Bob) Connelly, adalah matematikawan yang mengkhususkan diri dalam dan . Connelly menerima gelar Ph.D. dari Universitas Michigan pada tahun 1969. Saat ini, ia adalah seorang profesor di Universitas Cornell. Connelly menjadi terkenal karena menemukan yang tertanam. Satu polihedron semacam itu ada di Museum Nasional Sejarah Amerika. Minatnya saat ini termasuk puluhan peraturan dan . Pada tahun 2012, ia menjadi salah satu anggota dari American Mathematical Society. Asteroid dinamai menurut Robert Connelly. (in) Ро́берт Ко́ннелли (англ. Robert Connelly) (род. 15 июля 1942, , Пенсильвания, США) — американский математик, специалист по комбинаторной геометрии и (англ. Structural rigidity). (ru) Роберт Коннеллі (англ. Robert Connelly; нар. 15 липня 1942, Сеуїклі, Пенсільванія, США) — американський математик, фахівець з комбінаторної геометрії і теорії жорсткості. (uk) Robert Connelly (Pensilvânia, 15 de julho de 1942) é um matemático estadunidense, que trabalha com geometria e combinatória. Connelly estudou noa Universidade Carnegie Mellon (bacharelado em 1964), e obteve um doutorado em 1969 na Universidade de Michigan, orientado por , com a tese Unknotting Close Embeddings of Polyhedra in Codimension Greater Than Three. É desde 1969 professor da Universidade Cornell. Em 2012 foi eleito fellow da American Mathematical Society. O asteroide 4816 Connelly é denominado em sua homenagem. (pt) Robert Connelly (* 15. Juli 1942 in Pennsylvania) ist ein US-amerikanischer Mathematiker, der sich mit diskreter Geometrie und Kombinatorik befasst. Connelly studierte am Carnegie Institute of Technology (Bachelorabschluss 1964) und wurde 1969 bei an der University of Michigan promoviert (Unknotting Close Embeddings of Polyhedra in Codimension Greater Than Three). Seit 1969 ist er Professor an der Cornell University. Er war unter anderem Gastwissenschaftler am IHES, der Syracuse University, Budapest, Dijon, Montreal, Bielefeld (als Empfänger des Humboldt-Forschungspreises), der University of Calgary, der University of Washington in Seattle und der Universität Cambridge. (de) Robert Connelly (born July 15, 1942) is a mathematician specializing in discrete geometry and rigidity theory. Connelly received his Ph.D. from University of Michigan in 1969. He is currently a professor at Cornell University. Connelly is best known for discovering embedded flexible polyhedra. One such polyhedron is in the National Museum of American History. His recent interests include tensegrities and the carpenter's rule problem. In 2012 he became a fellow of the American Mathematical Society. (en)
rdfs:label Robert Connelly (en) روبرت كونلي (ar) Robert Connelly (de) Robert Connelly (in) Коннелли, Роберт (ru) Robert Connelly (pt) Роберт Коннеллі (uk)
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