Lev M. Bregman (1941 - 2023) is a

Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nation ...

and

Israel Israel (; he, יִשְׂרָאֵל, ; ar, إِسْرَائِيل, ), officially the State of Israel ( he, מְדִינַת יִשְׂרָאֵל, label=none, translit=Medīnat Yīsrāʾēl; ), is a country in Western Asia. It is situated ...

i mathematician, most known for the

Bregman divergence In mathematics, specifically statistics and information geometry, a Bregman divergence or Bregman distance is a measure of difference between two points, defined in terms of a strictly convex function; they form an important class of divergences. W ...

named after him. Bregman received his M. Sc. in mathematics in 1963 at

Leningrad University Saint Petersburg State University (SPBU; russian: Санкт-Петербургский государственный университет) is a public research university in Saint Petersburg, Russia. Founded in 1724 by a decree of Peter the G ...

and his Ph.D. in mathematics in 1966 at the same institution, under the direction of his advisor Prof. J. V. Romanovsky, for his thesis about relaxation methods for finding a common point of convex sets, which led to one of his most well-known publications.Brègman, L. M. A relaxation method of finding a common point of convex sets and its application to the solution of problems in convex programming. (Russian) Ž. Vyčisl. Mat. i Mat. Fiz. 7 1967 620–631. MR215617 (35 #6457) 90.60 (65.00) Bregman's Theorem, proving a 1963 conjecture of

Henryk Minc Henryk may refer to: * Henryk (given name) * Henryk, Świętokrzyskie Voivodeship, a village in south-central Poland * Henryk Glacier, an Antarctic glacier See also * Henryk Batuta hoax The Henryk Batuta hoax was a hoax perpetrated on the Polish ...

, gives an upper bound on the permanent of a 0-1 matrix. Bregman was employed at the

Institute for Industrial Mathematics An institute is an organisational body created for a certain purpose. They are often research organisations (research institutes) created to do research on specific topics, or can also be a professional body. In some countries, institutes can ...

, Beer-Sheva, Israel, after having spent one year at

Ben-Gurion University of the Negev Ben-Gurion University of the Negev (BGU) ( he, אוניברסיטת בן-גוריון בנגב, ''Universitat Ben-Guriyon baNegev'') is a public research university in Beersheba, Israel. Ben-Gurion University of the Negev has five campuses: the ...

, Beer-Sheva. Formerly, during 1966-1991, he was senior researcher at the Leningrad University. Bregman is author of several text books and dozens of publications in international journals.

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1941 births Mathematicians from Saint Petersburg Israeli mathematicians Living people Saint Petersburg State University alumni {{mathematician-stub