David Chudnovsky

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David Volfovich Chudnovsky (also Choodnovsky ; Ukrainian Давид Вольфович Чудновський ; Russian Давид Вольфович Чудновский ; born January 22, 1947 in Kiev ) is an American mathematician who deals with number theory.

Live and act

Chudnovsky, whose mother was a civil engineer and moved to New York with her sons, grew up in the Ukraine and, like his brother Gregory Chudnovsky , with whom he subsequently worked closely, studied at the University of Kiev and obtained his doctorate at the Mathematical Institute of the Ukrainian Academy Sciences. Gregory Chudnovsky is severely handicapped by an illness ( myasthenia gravis ), and in order to ensure better medical care, the family applied to emigrate in 1976, whereupon they lost their jobs and were persecuted by the KGB, for example his mother was on one occasion Road beaten up. However, the family received support from foreign mathematicians and was able to leave for New York in 1977, where the brothers worked at Columbia University (until the 1990s only as senior research scientists).

He is currently (2009) like his brother a professor at the Polytechnic Institute of New York University . They became known for several records in calculating Pi , some of which they achieved on supercomputers built in their own apartment (called "M zero", it reached up to 2 gigaflop computing power) in the early 1990s. In mid-1991 they calculated pi to 2 billion 260 million digits and stopped the calculations for the time being.

For their calculations of pi they used an algorithm they had developed ( Chudnovsky algorithm ), a formula that gives pi as a hypergeometric series similar to those that S. Ramanujan found.

After their first home supercomputer, they were also involved in other computer projects. Shortly afterwards, together with Saed Younis (then a student at MIT ) and the IBM supercomputer architect Monty Denneau , they built the Little Fermat computer at MIT , which was specially built for number theory calculations .

Your help with the restoration of the unicorn carpets of the Metropolitan Museum of Art (in the digital photo documentation) was the subject of a PBS television film in 2003.

The brothers received the French Peccot-Vimont Prize, several Guggenheim Fellowships and the Moscow Mathematical Society Prize.

In 1982 the brothers were co-editors of the collected works of Sakharov at Dekker.

Fonts

  • as editor with Gregory Chudnovsky: The Riemann Problem, complete Integrability and Arithmetic Applications. Proceedings of a seminar, held at the Institut des Hautes Etudes Scientifiques, Bures-sur Yvette, France and at Columbia University, New York, USA, 1979–1980 (= Lecture Notes in Mathematics . 925). Springer, Berlin et al. 1982, ISBN 3-540-11483-1 .
  • as editor with Gregory Chudnovsky: Classical and Quantum Models of Arithmetic Problems (= Lecture Notes in Pure and Applied Mathematics. 92). Marcel Dekker, New York NY et al. 1984, ISBN 0-8247-1825-9 .
  • as editor with Gregory Chudnovsky: Search theory. Some recent developments (= Lecture Notes in Pure and Applied Mathematics. 112). Marcel Dekker, New York NY et al. 1989, ISBN 0-8247-8000-0 .

Web links

Individual evidence

  1. ↑ Chudnovsky, Chudnovsky: The computation of classical constants. In: Proceedings of the National Academy of Sciences of the United States of America . Vol. 86, No. 21, 1989, pp. 8178-8182, JSTOR 34831 .
  2. ↑ and an article about the brothers in the New Yorker , Nov. 4, 2005.
personal data
SURNAME Chudnovsky, David
ALTERNATIVE NAMES Chudnovsky, David Volfovich (full name); Choodnovsky, David; Чудновський, Давид Вольфович (Ukrainian); Чудновский, Давид Вольфович (Russian)
BRIEF DESCRIPTION American mathematician
DATE OF BIRTH January 22, 1947
PLACE OF BIRTH Kiev