Stefan Mazurkiewicz
Stefan Mazurkiewicz (born September 25 1888 in Warsaw, then Russian Empire – died June 19 1945, Grodzisk Mazowiecki, Poland) was a Polish mathematician who worked in mathematical analysis, topology, and probability. He was a student of Wacław Sierpiński and a member of the Polish Academy of Learning (PAU). His students included Karol Borsuk, Bronisław Knaster, Kazimierz Kuratowski, Stanisław Saks, and Antoni Zygmund.
Methods and technology |
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Personnel |
Chief
Gwido Langer German Section cryptologists Wiktor Michałowski
Chief of Russian Section
Jan Graliński Russian Section cryptologist
Piotr Smoleński |
The Hahn-Mazurkiewicz theorem, a basic result on curves prompted by the phenomenon of space-filling curves, is named for Mazurkiewicz and Hans Hahn. His 1935 paper Sur l'existence des continus indécomposables is generally considered the most elegant piece of work in point-set topology.
During the Polish-Soviet War (1919-1921), Mazurkiewicz as early as 1919 broke the commonest Russian cipher for the Polish General Staff's cryptological agency. Thanks to this, orders issued by Soviet commander Mikhail Tukhachevsky's staff were known to Polish Army leaders. This contributed substantially, perhaps decisively, to Polish victory at the critical Battle of Warsaw and possibly to Poland's survival as an independent country.