Jan Lukasiewicz

The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Łukasiewicz, Jan


Born Dec. 21,1878, in L’vov; died Nov. 13, 1956, in Dublin. Polish logician. Member of the Polish Academy of Sciences (1937).

Łukasiewicz was a professor at the University of L’vov from 1906 to 1915 and at the University of Warsaw from 1915 to 1939. After World War II he taught at the Royal Irish Academy in Dublin. Łukasiewicz worked on logical problems of induction and causality and on the logical foundations of probability theory. He constructed the first system of many-valued logic and used it to create a system of modal logic. He developed a special language to formalize logical and mathematical expressions, called parenthesis-free Łukasiewicz symbolism. His philosophical outlook was that of a positivist.


Z zagadnień logiki i filozofii: Pisma wybrane. Warsaw, 1961. (Contains complete bibliography of Łukasiewicz’s works)
In Russian translation:
Aristotelevskaia sillogistika s tochki zreniia sovremennoiformaL’not logiki. Moscow, 1959. (Translated from Polish.)


Borkowski, L., and T. Slupecki. “The Logical Works of J. Łukasiewicz.” Studio Logica, vol. 8, 1958.
The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
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(5) Kazimierz Ajdukiewicz, Tadeusz Czezowski, Tadeusz Kotarbinski, Stanistaw Lesniewski, and Jan Lukasiewicz are among his main students.
Much of Tarski's formulating was done in collaboration with such luminaries as Jan Lukasiewicz, Stefan Banach, Andrzej Mostowski, and others whose work Korzybski knew and who, with Tarski, influenced Korzybski's work.
The way to a systematization of paraconsistency was opened by Jan Lukasiewicz in his 1910 book on Aristotle's Principle of Non-Contradiction.
On March 7, 1918 Jan Lukasiewicz, the Polish logician who formally originated multi-valued logics, delivered a speech at Warsaw University on the need for "indeterminacy" in formal logical systems.
They share some originating non-aristotelian influences, among them the three-valued, then multi-valued, then 'infinite'-valued mathematical logics of Jan Lukasiewicz (1878-1956).