Ivan_Śleszyński
Jan Śleszyński
Polish-Russian mathematician (1854–1931)
Ivan Vladislavovich Sleshinsky[1] or Jan Śleszyński[1][2][3] (Russian: Иван Владиславович Слешинский) (23 July 1854 – 9 March 1931) was a Polish-Russian mathematician. He was born in Lysianka, Russian Empire to Polish parents.