John Robert Steel (born October 30, 1948) is an American set theorist at University of California, Berkeley (formerly at UCLA). He has made many contributions to the theory of inner models and determinacy. With Donald A. Martin, he proved projective determinacy, assuming the existence of sufficient large cardinals. He earned his Ph.D. in Logic & the Methodology of Science at Berkeley in 1977 under the joint supervision of John West Addison Jr. and Stephen G. Simpson.
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| - جون ر. ستيل (ar)
- John R. Steel (de)
- John R. Steel (fr)
- John R. Steel (en)
- John Robert Steel (pt)
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| - جون ر. ستيل (بالإنجليزية: John R. Steel) هو فيلسوف ورياضياتي أمريكي، ولد في 30 أكتوبر 1948. (ar)
- John Robert Steel (born October 30, 1948) is an American set theorist at University of California, Berkeley (formerly at UCLA). He has made many contributions to the theory of inner models and determinacy. With Donald A. Martin, he proved projective determinacy, assuming the existence of sufficient large cardinals. He earned his Ph.D. in Logic & the Methodology of Science at Berkeley in 1977 under the joint supervision of John West Addison Jr. and Stephen G. Simpson. (en)
- John Robert Steel (né le 30 octobre 1948) est un mathématicien américain, spécialisé en théorie des ensembles à l'université de Californie à Berkeley (anciennement à l'UCLA). (fr)
- John Robert Steel (30 de outubro de 1948) é um matemático estadunidense. Em 1977 obteve o Ph.D. em lógica e metodologia da ciência na Universidade da Califórnia em Berkeley Especialista em teoria dos conjuntos, é professor da Universidade da Califórnia em Berkeley. Fez diversas contribuições à teoria de modelos internos e . Juntamente com Donald Anthony Martin, provou o , assumindo a existência de suficientemente grandes cardinais. Foi palestrante convidado do Congresso Internacional de Matemáticos em Quioto (1990: Iteration trees). (pt)
- John R. Steel (* 30. Oktober 1948) ist ein US-amerikanischer mathematischer Logiker, der sich mit axiomatischer Mengenlehre beschäftigt. John Steel promovierte 1977 bei John West Addison und Stephen G. Simpson an der University of California, Berkeley (Determinateness and Subsystems of Analysis). Er war in den 1990er Jahren Professor an der University of California, Los Angeles (UCLA) und ist heute Professor in Berkeley. 1990 war er Invited Speaker auf dem Internationalen Mathematikerkongress in Kyōto (Iteration trees). (de)
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| - جون ر. ستيل (بالإنجليزية: John R. Steel) هو فيلسوف ورياضياتي أمريكي، ولد في 30 أكتوبر 1948. (ar)
- John R. Steel (* 30. Oktober 1948) ist ein US-amerikanischer mathematischer Logiker, der sich mit axiomatischer Mengenlehre beschäftigt. John Steel promovierte 1977 bei John West Addison und Stephen G. Simpson an der University of California, Berkeley (Determinateness and Subsystems of Analysis). Er war in den 1990er Jahren Professor an der University of California, Los Angeles (UCLA) und ist heute Professor in Berkeley. Steel befasst sich mit inneren Modellen der Mengenlehre und Determiniertheit. So bewies er mit Donald A. Martin projektive Determiniertheit unter Annahme eines Axioms der Existenz großer Kardinalzahlen (veröffentlicht 1989). Beide erhielten für diese Arbeit mit W. Hugh Woodin 1988 den Karp-Preis. Steele ist der Gödel-Lecturer 2012. Er erhielt 2015 mit Ronald Jensen die Hausdorff Medal der European Set Theory Society für ihre Arbeit K without the measurable. 1990 war er Invited Speaker auf dem Internationalen Mathematikerkongress in Kyōto (Iteration trees). (de)
- John Robert Steel (born October 30, 1948) is an American set theorist at University of California, Berkeley (formerly at UCLA). He has made many contributions to the theory of inner models and determinacy. With Donald A. Martin, he proved projective determinacy, assuming the existence of sufficient large cardinals. He earned his Ph.D. in Logic & the Methodology of Science at Berkeley in 1977 under the joint supervision of John West Addison Jr. and Stephen G. Simpson. (en)
- John Robert Steel (né le 30 octobre 1948) est un mathématicien américain, spécialisé en théorie des ensembles à l'université de Californie à Berkeley (anciennement à l'UCLA). (fr)
- John Robert Steel (30 de outubro de 1948) é um matemático estadunidense. Em 1977 obteve o Ph.D. em lógica e metodologia da ciência na Universidade da Califórnia em Berkeley Especialista em teoria dos conjuntos, é professor da Universidade da Califórnia em Berkeley. Fez diversas contribuições à teoria de modelos internos e . Juntamente com Donald Anthony Martin, provou o , assumindo a existência de suficientemente grandes cardinais. Foi palestrante convidado do Congresso Internacional de Matemáticos em Quioto (1990: Iteration trees). (pt)
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