November 24, 1882 Tokaj, Austria-Hungary – March 23, 1952) was a Hungarian mathematician, philosopher, linguist and poet.
Born in to a wealthy and aristocratic Protestant family, he married Valéria Geiger (1879–1978) in December 1905.
[1] After the fall of the Soviet Republic he fled to Vienna and was later invited to the United Kingdom.
From 1921 to 1923 he lectured at University College, Swansea, where his students included Evan Tom Davies.
From 1923 to 1948 he was Professor of Mathematics at Birkbeck College, London, where his students included Ralph Henstock and Abraham Robinson.