Tarski, Alfred(tär`skē), 1901–83, Polish-American mathematician and philosopher, Ph.D. Univ. of Warsaw, 1924, b. Alfred Teitelbaum, changed his named 1923. He lectured at Warsaw until 1939, emigrated to the United States, and then taught at the Univ. of California, Berkeley (1942–68, emeritus until his death). Tarski made extensive, basic contributions to the field of metamathematics, a branch of mathematical logic. His most important contribution to logic is the semantic method, a method that allows a more exacting study of formal scientific languages. His work is characterized by a basic acceptance and free use of the assumptions of set theory. For this reason he is regarded by some as a nominalist. His publications include A Decision Method for Elementary Algebra and Geometry (1948, rev. ed. 1957) and Undecidable Theories (with others, 1953; repr. 1968).
Born Jan. 14, 1902, in Warsaw. Polish logician and mathematician.
Tarski emigrated to the USA in 1939. He has done important work in set theory, the theory of Boolean algebras, logics with formulas of infinite length, and other branches of mathematical logic and the foundations of mathematics. He has made basic contributions to model theory, logical semantics, metalogic, and the methodology of deductive sciences.
WORKSUndecidable Theories. New York, 1954. (With others.)
Logic, Semantics, Metamathematics. Oxford, 1956.
In Russian translation:
Vvedenie v logiku imetodologiiu deduktivnykh nauk. Moscow, 1948.