Bronisław Knaster

Bronisław Knaster (22 May 1893 in Warsaw – 3 November 1980 in Wrocław) was a Polish mathematician; from 1939 a university professor in Lwów and from 1945 in Wrocław.

He is known for his work in point-set topology and in particular for his discoveries in 1922 of the hereditarily indecomposable continuum or pseudo-arc and of the Knaster continuum, or buckethandle continuum. Together with his teacher Hugo Steinhaus and his colleague Stefan Banach, he also developed the last diminisher procedure for fair cake cutting.

Knaster received his Ph.D. degree from University of Warsaw in 1925, under the supervision of Stefan Mazurkiewicz.

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