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Kazimierz Ajdukiewicz

Born	(1890-12-12)12 December 1890 Tarnopol, Austrian Galicia, Austria-Hungary (now Ternopil, Ukraine)
Died	12 April 1963(1963-04-12) (aged 72) Warsaw, Poland
Nationality	Polish
Alma mater	University of Lwów
Scientific career
Fields	Logician
Notable students	Mojżesz Presburger

Signature

Kazimierz Ajdukiewicz (12 December 1890 – 12 April 1963) was a Polish philosopher and logician, a prominent figure in the Lwów–Warsaw school of logic. He originated many novel ideas in semantics. Among these was categorial grammar, a highly flexible framework for the analysis of natural language syntax and (indirectly) semantics that remains a major influence on work in formal linguistics. Ajdukiewicz's fields of research were model theory and the philosophy of science.