Wacław Sierpiński
lived from 1882 to 1969

**Sierpiński**'s most important work is in the area of set theory, point set topology and number theory. In set theory he made important contributions to the axiom of choice and to the continuum hypothesis.

*Find out more at*:

http://mathshistory.st-andrews.ac.uk/Biographies/Sierpinski.html