Stylianos Konstantinos Pichorides (Στυλιανός Κωνσταντίνος Πιχωρίδης, 18 October 1940, Athens – 18 June 1992, Madrid) was a Greek mathematician, specializing in harmonic analysis.
[3] In 1972 Pichorides returned to Athens and worked at the National Centre of Scientific Research "Demokritos", where he was employed until 1983, with interruptions by leave of absence.
From 1983 until his death in 1992, Pichorides was a professor at the University of Crete's mathematics department, which he co-founded.
In 1980 he received the Salem Prize for his research on Littlewood's conjecture on a lower bound for averaged exponential sums.
[1] Research by Pichorides and others provided the basis for the 1981 proof by Sergei Vladimirovich Konyagin of Littlewood's conjecture on the lower bound.