Sierpinski
Wacław Sierpiński (1882–1969) was a Polish mathematician whose research spanned set theory, topology, and number theory. He contributed to the foundations of mathematics and helped shape the development of mathematical education in Poland during the first half of the 20th century. His work on infinite sets, continuity, and measure influenced multiple areas of analysis and topology, and he mentored a generation of Polish researchers.
In topology, Sierpiński introduced the Sierpiński space, a two-point example used to illustrate basic concepts of
In number theory, he proved Sierpiński's theorem: there exist infinitely many integers k such that k·2^n+1 is
Sierpiński's legacy endures in modern topology and fractal geometry, and many mathematical objects bear his name,