Kazimierz Kuratowski

Kazimierz Kuratowski was a renowned Polish mathematician known for his contributions to set theory, topology, and graph theory. Born in 1896, he made significant advancements in understanding the properties of spaces and shapes, particularly through concepts like the Kuratowski closure and separation axioms. He is perhaps best known for the Kuratowski's theorem, which characterizes planar graphs. His work has had a lasting impact on mathematics, influencing theories and applications in various fields. Kuratowski's legacy is recognized in numerous mathematical concepts and theorems that bear his name. He passed away in 1980.