Bronisław Knaster
Bronisław Knaster (22 May 1893 in Warsaw - 3 November 1980 in Wrocław) was a Polish mathematician; from 1939 university professor in Lwów, from 1945 in Wrocław.
Knaster received his Ph.D. degree from University of Warsaw in 1925, under the supervision of Stefan Mazurkiewicz. These two individuals are considered by many among the greatest point-set topologists of all time.
Knaster is famous for his discovery, in 1922, of the so-called hereditarily indecomposable continuum, later named the pseudo-arc, and the Knaster continuum, or buckethandle continuum.
In 1963 he received a Nagroda państwowa (national award). He was also known for his sense of humour. He organized meetings of mathematicians called knasteria which made history of this discipline in Poland.