Stylianos Pichorides

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Stylianos Pichorides (born October 18, 1940 in Athens , † June 18, 1992 in Madrid ) was a Greek mathematician who dealt with harmonic analysis.

Life

Pichorides went to school in Athens and graduated from the Polytechnic there in 1963 as an electrical engineer. He then worked as an electrical engineer in Athens, but also studied mathematics and received a scholarship to study at the University of Chicago from 1968 . In 1971 he received his doctorate there under Antoni Zygmund on trigonometric series. In 1972 he returned to Athens and worked at the Democritos Nuclear Research Center, where he was employed until 1983. This was interrupted by a research stay as Attaché de Recherche of the CNRS in Orsay from 1974 to 1976 and a visiting professorship at the University of Paris-Süd in Orsay from 1979 to 1980 and at the University of California, Los Angeles 1980/81. In 1978 he organized a successful conference on harmonic analysis in Heraklion (with N. Petridis and Nicolas Varopoulos ) and was professor at the University of Crete from 1983, which he helped to found. From 1989 to 1990 he was visiting professor in Orsay, at Caltech and the University of Chicago and in 1991/92 visiting professor at the University of Cyprus and was on shorter visits to the Mittag-Leffler Institute , Cambridge University, Brown University and Chicago University. He died suddenly while attending a conference in Spain in 1992.

He is known for results on inequalities in the theory of Fourier series. In 1980 he received the Salem Prize for his research on the Littlewood conjecture, a lower bound for averaged exponential sums. They provided the basis for the proof of the conjecture by Sergei Vladimirovich Konjagin in 1981.

Fonts

  • On a conjecture of Littlewood concerning exponential sums, Part 1,2, Bulletin Greek Math. Soc., Vol. 18, 1977, pp. 8-16, Vol. 19, 1978, pp. 274-277

literature

  • Jean-Pierre Kahane , Stylianos Pichorides 1940-1992, J. Geom. Analysis, Vol. 3, 1993, pp. 533-542

Web links

Individual evidence

  1. ^ Carruth McGehee, Remarks on the Littlewood conjecture, pdf
personal data
SURNAME Pichorides, Stylianos
BRIEF DESCRIPTION Greek mathematician
DATE OF BIRTH October 18, 1940
PLACE OF BIRTH Athens
DATE OF DEATH June 18, 1992
Place of death Madrid