Kuratowského
Kuratowského is the Czech-language genitive form used to refer to Kazimierz Kuratowski, a Polish mathematician (1891–1980). In Czech and Slovak mathematical literature, results named after him are frequently cited with his surname in the genitive, for example Kuratowského věta o uzávěru a doplnění (Kuratowski's closure–complement theorem) and Kuratowského věta o planárnosti grafů (Kuratowski's graph planarity theorem).
His work in topology established fundamental results about the operations of taking closures and complements of
Kuratowski's research influenced several areas of topology and discrete mathematics, and his name remains attached to