János Körner
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János Körner is a Hungarian mathematician who works on
information theory Information theory is the mathematical study of the quantification (science), quantification, Data storage, storage, and telecommunications, communication of information. The field was established and formalized by Claude Shannon in the 1940s, ...
and
combinatorics Combinatorics is an area of mathematics primarily concerned with counting, both as a means and as an end to obtaining results, and certain properties of finite structures. It is closely related to many other areas of mathematics and has many ...
. Körner studied Mathematics at the
Eötvös Loránd University Eötvös Loránd University (, ELTE, also known as ''University of Budapest'') is a Hungarian public research university based in Budapest. Founded in 1635, ELTE is one of the largest and most prestigious public higher education institutions in ...
in Budapest with a degree in 1970 and was then at the Alfréd Rényi Institute of Mathematics of the
Hungarian Academy of Sciences The Hungarian Academy of Sciences ( , MTA) is Hungary’s foremost and most prestigious learned society. Its headquarters are located along the banks of the Danube in Budapest, between Széchenyi rakpart and Akadémia utca. The Academy's primar ...
until 1992. From 1981 to 1983 he was at the
Bell Laboratories Nokia Bell Labs, commonly referred to as ''Bell Labs'', is an American industrial research and development company owned by Finnish technology company Nokia. With headquarters located in Murray Hill, New Jersey, the company operates several lab ...
and in 1987–88 at
Télécom Paris Télécom Paris (also known as ENST or Télécom or École nationale supérieure des télécommunications ; also Télécom ParisTech until 2019) is a French public institution for higher education (''grande école'') and engineering research. Loc ...
(ENST) in Paris. He has been a professor at the
Sapienza University of Rome The Sapienza University of Rome (), formally the Università degli Studi di Roma "La Sapienza", abbreviated simply as Sapienza ('Wisdom'), is a Public university, public research university located in Rome, Italy. It was founded in 1303 and is ...
since 1993. Over his career, he frequently collaborated with fellow information theorists such as Rudolf Ahlswede, Katalin Marton, and Imre Csiszár. Together with Rudolf Ahlswede and Peter Gács he proved the blowing-up lemma.Ahlswede, Gacs, Körner ''Bounds on conditional probabilities with applications in multiuser communication'', Z. Wahrsch. und Verw. Gebiete 34, 1976, 157–177 Besides information theory, he also works on
extremal graph theory Extremal graph theory is a branch of combinatorics, itself an area of mathematics, that lies at the intersection of extremal combinatorics and graph theory. In essence, extremal graph theory studies how global properties of a graph influence loca ...
. In 2014 he received the Claude E. Shannon Award. He served as Associated editor of the
IEEE Transactions on Information Theory ''IEEE Transactions on Information Theory'' is a monthly peer-reviewed scientific journal published by the IEEE Information Theory Society. It covers information theory and the mathematics of communications. It was established in 1953 as ''IRE Tran ...
on multiple occasions. He is a member of the Hungarian Academy of Sciences.


Books

* With Imre Csiszár: Information Theory: Coding Theorems for Discrete Memoryless Systems, Academic Press 1981, 2nd edition Cambridge University Press 2011.


References


External links


Homepage

IEEE Biography
{{DEFAULTSORT:Körner, János 1946 births Living people Academic staff of the Sapienza University of Rome Members of the Hungarian Academy of Sciences 20th-century Hungarian mathematicians Information theorists Fellows of the IEEE