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Kazimierz Kuratowski
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Kazimierz Kuratowski (born February 2, 1896, Warsaw, died June 18, 1980, Warsaw)
was a Polish mathematician.
Among his contributions to mathematics are:
- a characterization of Hausdorff spaces in terms of what are now called Kuratowski closure operators[?];
- the proof of the Kuratowski-Zorn lemma
- in graph theory, the characterization of planar graphs now known as the Kuratowski's theorem
- Biography of Kuratowski (http://www-groups.dcs.st-and.ac.uk/~history/Mathematicians/Kuratowski)
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