# Steinhaus, Hugo Dyonizy (1887–1972)

Hugo Steinhaus was a Polish mathematician who was an influential member of the so-called *Lvov
School*, based at the Jan Kazimierz University in Lvov, which also included
Stefan Banach and which focused on problems
in functional analysis, real
functions, and probability in the 1920s and '30s. Early on, Steinhaus's
work revolved around applications of the Lebesgue measure and integral. In 1923 he published the first rigorous account of
the theory of tossing coins based on measure
theory, and in 1925 was the first to define and discuss the concept
of strategy in game theory. During the Second World War, as a Jew he was
compelled to hide from persecution by the Nazis, yet continued his mathematical
work despite great hardship. In 1944, Steinhaus proposed the problem of
dividing a cake into *n* pieces so that it is proportional and envy
free (see cake-cutting). He is also
well known as the author of the widely-read *Mathematical Snapshots*.