Félix Édouard Justin Émile Borel (1871 – 1956)
was a French mathematician and politician. As a mathematician, he was known for his founding work in the areas of measure theory and probability.
(Wikipedia)
Gertrude Blanch (1897 -1996)
was an Russian-American mathematician who did pioneering work in numerical analysis and computation.
(Wiki)
Oscar Zariski (1899-1986)
Russian-born American mathematician and one of the most influential algebraic geometers.
Olga Alexandrowna Ladyschenskaja (1922-2004)
was a Soviet and Russian mathematician.
She was known for her work PDEs and fluid dynamics. She provided the first rigorous proofs of the convergence of a finite difference method for the Navier–Stokes equations.
(Wikipedia)