Stanisław Leśniewski

Stanisław Leśniewski [ sta'ɲiswaf lɛ'ɕɲɛfski ] ( born March 30, 1886 in Serpukhov, † May 13, 1939 in Warsaw) was a Polish philosopher, mathematician and logician.

Stanisław Leśniewski was born in Russia, but he came from a Polish family. His father worked as a railway engineer in the Russian Empire and moved around a lot. Therefore Leśniewski attended high school in Irkutsk.

Then Leśniewski studied mathematics and philosophy. He attended lectures by Hans Cornelius on philosophy in Munich and at Waclaw Sierpiński in Lviv mathematics. Supervisor of his thesis there was Kazimierz Twardowski, the founder of the Lviv- Warsaw school of logic became its leading figure Leśniewski with Jan Łukasiewicz would be later.

In the Polish-Soviet War Leśniewski worked on behalf of the Polish General Staff as a cryptanalyst from breaking the codes used on the Soviet side.

1919, with the re-establishment of the Polish state, Leśniewski got a chair of philosophy of mathematics at the University of Warsaw. Philosophically, his position was that of Reismus, a radical nominalism. He formulated his critique of classical mathematics, including set theory, which has been shaken in his opinion of Russell's antinomy. Your subsequent axiomatization by Ernst Zermelo he also refused. As a replacement for set theory he developed the mereology.

Works

• "On functions whose fields groups with regard to these functions ," Fundamenta Mathematicae 1929, Volume XIII, p.319 -32.
• "Principles of a new system of the foundations of mathematics ," Fundamenta Mathematicae 1929, Volume XIV, p.1 -81.
• "On functions whose fields Abelian groups with respect to these functions ," Fundamenta Mathematicae 1929, Volume XIV, p.242 - 251st