Sierpiskiego
Wacław Sierpiński (1882–1969) was a Polish mathematician whose work spanned set theory, topology, and number theory. A central figure in the Polish School of Mathematics, he contributed to the development of modern mathematical logic and analysis in the first half of the 20th century.
Among his most enduring contributions are several concepts that bear his name in fractal geometry and topology.
In topology, the Sierpiński space is a simple two-point topological space used as a textbook counterexample
In set theory and measure theory, he introduced the notion of a Sierpiński set, a subset of
In number theory, Sierpiński studied problems related to primes and composite forms; a Sierpiński number is
His work left a lasting impact on multiple branches of mathematics, and his name is attached to