StanisÅ‚aw Åojasiewicz
Stanisław Łojasiewicz ( born October 9, 1926 in Warsaw, † 14 November 2002) was a Polish mathematician.
Stanisław Łojasiewicz studied from 1945 to 1947 mathematics at the Jagiellonian University in Krakow and in 1950 at Tadeusz Ważewski with the dissertation Sur l' allure asymptotique the integral du système d' équations differential au point de voisinage singulier doctorate. He dealt first with ordinary differential equations, then with distribution theory and partial differential equations. His work on the semi- analytic geometry had an influence on the approximation theory, control theory and model theory.
After his first stay abroad in 1957 in Paris he attended the universities of Kingston ( Ontario), Chicago, Berkeley (California ) and the Institute for Advanced Study in Princeton in 1958 to 1960. In 1962 he became professor at the Jagiellonian University and then accepted invitations to Pisa and Buenos Aires. After his research at the Institut des Hautes Études Scientifiques 1964-1965 he presented a systematic elaboration of the semi- analytic geometry as well as a monograph on the subject. He was invited to the 1970 International Congress of Mathematicians in Nice, about his findings carry forward (Presentation: Sur les ensembles semi- analytiques ).
1971 Łojasiewicz was elected as a corresponding member in the Polish Academy of Sciences, he received full membership in 1980. Since 1983 he was a member of the Pontifical Academy of Sciences. In 1992 his Stefan Banach Medal was awarded. In 1962 he was invited speaker at the International Congress of Mathematicians in Stockholm (triangulation of real analytic sets).