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- ديفيد اتش بيلي (بالإنجليزية: David H. Bailey) (و. 1948 – م) هو رياضياتي، وعالِم حاسب آلي من الولايات المتحدة الأمريكية . (ar)
- David Harold Bailey (* 14. August 1948) ist ein US-amerikanischer Mathematiker und Informatiker. (de)
- David Harold Bailey (born 1948) is a mathematician and computer scientist. He received his B.S. in mathematics from Brigham Young University in 1972 and his Ph.D. in mathematics from Stanford University in 1976. He worked for 14 years as a computer scientist at NASA Ames Research Center, and then from 1998 to 2013 as a Senior Scientist at the Lawrence Berkeley National Laboratory. He is now retired from the Berkeley Lab, but continues as a research associate at the University of California, Davis, Department of Computer Science. Bailey is perhaps best known as a co-author (with Peter Borwein and Simon Plouffe) of a 1997 paper that presented a new formula for π (pi), which had been discovered by Plouffe in 1995. This Bailey–Borwein–Plouffe formula permits one to calculate binary or hexadecimal digits of pi beginning at an arbitrary position, by means of a simple algorithm. Subsequently, Bailey and Richard Crandall showed that the existence of this and similar formulas has implications for the long-standing question of "normality"—whether and why the digits of certain mathematical constants (including pi) appear "random" in a particular sense. Bailey is a long-time collaborator with the late Jonathan Borwein (Peter's brother). They co-authored five books and over 80 technical papers on experimental mathematics. Bailey also does research in numerical analysis and parallel computing. He has published studies on the fast Fourier transform, high-precision arithmetic, and the PSLQ algorithm (used for integer relation detection). He is a co-author of the NAS Benchmarks, which are used to assess and analyze the performance of parallel scientific computers. He has also published articles in the area of mathematical finance, including a 2014 paper "Pseudo-mathematics and financial charlatanism," which emphasizes the dangers of statistical overfitting and other abuses of mathematics in the financial field. In 1993, Bailey received the Sidney Fernbach award from the IEEE Computer Society, as well as the Chauvenet Prize and the Hasse Prize from the Mathematical Association of America. In 2008 he was a co-recipient of the Gordon Bell Prize from the Association for Computing Machinery. In 2017 he was a co-recipient of the Levi L. Conant Prize from the American Mathematical Society. Bailey is a member of the Church of Jesus Christ of Latter-day Saints. He has positioned himself as an advocate of the teaching of science and that accepting the conclusions of modern science is not incompatible with a religious view. (en)
- David Harold Bailey (nacido el 14 de agosto de 1948) es un matemático e informático teórico estadounidense, conocido por sus aportaciones a los sistemas de cálculo computerizado, que la permitieron calcular el valor de Π con más cien millones de cifras decimales. (es)
- David Harold Bailey (né en 1948) est un mathématicien et informaticien américain. Ayant obtenu un baccalauréat en mathématiques de l'université Brigham Young en 1972 et un Ph.D. dans le même domaine de l'université Stanford en 1976, il a travaillé pendant 14 ans comme informaticien au Ames Research Center. Depuis 1998, il travaille au Laboratoire national Lawrence-Berkeley. Bailey est probablement surtout connu pour avoir co-écrit en 1997, avec Peter Borwein et Simon Plouffe, un article donnant une nouvelle formule de π : la formule BBP. Il est un proche collaborateur de Jonathan Borwein (le frère de Peter). Ils ont publié quantité d'articles ensemble ainsi que trois livres sur les mathématiques expérimentales. Bailey est également rédacteur en chef du site web Science Meets Religion et est associé à l'Église de Jésus-Christ des saints des derniers jours. (fr)
- David Harold Bailey (14 de agosto de 1948) é um matemático e cientista da computação estadunidense. Obteve o B.S. em matemática na Universidade Brigham Young em 1972 e o Ph.D. em matemática na Universidade Stanford em 1976. Trabalhou 14 anos como cientista da computação no NASA Ames Research Center, e desde 1998 no Laboratório Nacional de Lawrence Berkeley. (pt)
- David Harold Bailey, född 14 augusti 1948, är en amerikansk matematiker och datavetare. År 1996 skapade Bailey tillsammans med och Simon Plouffe en formel (BBP-formeln) som gör det möjligt att direkt beräkna godtycklig binär siffra (decimal i basen 2) av pi utan att först behöva beräkna de föregående decimalerna. (sv)
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- ديفيد اتش بيلي (بالإنجليزية: David H. Bailey) (و. 1948 – م) هو رياضياتي، وعالِم حاسب آلي من الولايات المتحدة الأمريكية . (ar)
- David Harold Bailey (* 14. August 1948) ist ein US-amerikanischer Mathematiker und Informatiker. (de)
- David Harold Bailey (nacido el 14 de agosto de 1948) es un matemático e informático teórico estadounidense, conocido por sus aportaciones a los sistemas de cálculo computerizado, que la permitieron calcular el valor de Π con más cien millones de cifras decimales. (es)
- David Harold Bailey (14 de agosto de 1948) é um matemático e cientista da computação estadunidense. Obteve o B.S. em matemática na Universidade Brigham Young em 1972 e o Ph.D. em matemática na Universidade Stanford em 1976. Trabalhou 14 anos como cientista da computação no NASA Ames Research Center, e desde 1998 no Laboratório Nacional de Lawrence Berkeley. (pt)
- David Harold Bailey, född 14 augusti 1948, är en amerikansk matematiker och datavetare. År 1996 skapade Bailey tillsammans med och Simon Plouffe en formel (BBP-formeln) som gör det möjligt att direkt beräkna godtycklig binär siffra (decimal i basen 2) av pi utan att först behöva beräkna de föregående decimalerna. (sv)
- David Harold Bailey (born 1948) is a mathematician and computer scientist. He received his B.S. in mathematics from Brigham Young University in 1972 and his Ph.D. in mathematics from Stanford University in 1976. He worked for 14 years as a computer scientist at NASA Ames Research Center, and then from 1998 to 2013 as a Senior Scientist at the Lawrence Berkeley National Laboratory. He is now retired from the Berkeley Lab, but continues as a research associate at the University of California, Davis, Department of Computer Science. (en)
- David Harold Bailey (né en 1948) est un mathématicien et informaticien américain. Ayant obtenu un baccalauréat en mathématiques de l'université Brigham Young en 1972 et un Ph.D. dans le même domaine de l'université Stanford en 1976, il a travaillé pendant 14 ans comme informaticien au Ames Research Center. Depuis 1998, il travaille au Laboratoire national Lawrence-Berkeley. Bailey est également rédacteur en chef du site web Science Meets Religion et est associé à l'Église de Jésus-Christ des saints des derniers jours. (fr)
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- ديفيد اتش بيلي (ar)
- David Harold Bailey (de)
- David H. Bailey (matemático) (es)
- David H. Bailey (mathematician) (en)
- David H. Bailey (fr)
- David Harold Bailey (pt)
- David H. Bailey (sv)
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