Stanisław Łojasiewicz (9 October 1926 – 14 November 2002) was a Polish mathematician.
[1] At the end of the 1950s, he solved the problem of distribution division by analytic functions, introducing the Łojasiewicz inequality.
Its solution opened the road to important results in the new theory of partial differential equations.
The method established by Łojasiewicz led him to advance the theory of semianalytic sets, which opened an important chapter in modern analysis.
[1] The Łojasiewicz Lectures[2] are a series of annual lectures in mathematics given at the Jagiellonian University in honour of Łojasiewicz.