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Mathematician

Leonid Levin

LAY-oh-NEED LEV-in
Also Known As Leonid Anatolievich Levin
Modern

Professor in the Department of Computer Science at Boston University, working on computational complexity, randomness and holographic proofs. In 1973, working independently in the Soviet Union and unaware of Stephen Cook's 1971 result, Levin proved the same foundational fact of complexity theory in his paper Universal Search Problems, establishing NP-completeness by a different route; the shared result is now called the Cook-Levin theorem. He later emigrated to the United States and joined Boston University.

Facts
Birth Date
1948-11-02 1
Birth Year
1948 1
Birthplace
Dnipropetrovsk, Ukrainian SSR, Soviet Union 1
Nationality / Culture
Soviet-born American 1
Defining Contribution
Independently formalized NP-completeness in 1973 (Universal Search Problems), roughly contemporaneously with and unaware of Stephen Cook's 1971 work in the United States; jointly credited in the Cook-Levin theorem, the founding result underlying the P versus NP question. 2
Notable Work
Independently co-discovered the existence of NP-complete problems with Stephen Cook (the Cook-Levin theorem). 1
Award
Knuth Prize (2012), for the discovery of NP-completeness and the development of average-case complexity; member, U.S. National Academy of Sciences. 1
Leonid Levin
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Connections

Conjectures Posed

Published 1973 in the Soviet Union, independently of and roughly contemporaneously with Stephen Cook's 1971 formalization in the United States.

Source Clay Mathematics Institute

In Branch

Source Leonid Levin, Faculty Homepage, Boston University
Source Leonid Levin, Faculty Homepage, Boston University

Proofs Credited

Sources
1. Leonid Levin (Wikipedia)
Wikimedia Foundation
  • opening paragraph
    born November 2, 1948 ... in Dnipropetrovsk, Ukrainian SSR, Soviet Union.
  • Career section
    He and Stephen Cook independently discovered the existence of NP-complete problems.
  • infobox pronunciation guide
    LAY-oh-NEED LEV-in
  • Awards section
    Levin was awarded the Knuth Prize in 2012 for his discovery of NP-completeness and the development of average-case complexity.
View the Source
2. Clay Mathematics Institute
Clay Mathematics Institute

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