Cypra Cecilia Krieger Dunaj was the first woman to earn a PhD in mathematics from a Canadian university and only the third person to be awarded a mathematics doctorate in Canada. She is best known for her English translation of Sierpinski’s Introduction to General Topology (1934) and General Topology (1952)
Frieda Nugel was a German mathematician who was one of the first women to receive a doctorate in Germany.
Edith Luchins was a Polish-American mathematician who applied mathematical methods to problems in the philosophy of science and psychology.
Hanna Neumann worked in group theory. Her thesis examined free products with amalgamation. Later she worked on varieties of groups and her book Varieties of Groups (1967) is a classic.
Gertrude Blanch was a Polish born American mathematician who did pioneering work in numerical analysis and computation.
Hildegard Rothe-Ille was a German mathematician advised by Issai Schur. She married the mathematician Erich Rothe in 1928 and after her marriage reviewed around 170 papers before having to flee from the Nazi regime in 1937.
Pilar Ribeiro was a co-founder of the journal Gazeta de Matemática and co-founder of the Portuguese Mathematical Society, serving as its First Secretary. Along with her husband, the mathematician Hugo Ribeira, she spent 30 years in exile because of her opposition to the authoritarian Estado Novo regime in Portugal.
Elena Popoviciu was a Romanian mathematician who worked in functional analysis.
Wanda Szmielew was a Polish mathematical logician who first proved the decidability of the first-order theory of abelian groups.
Krystyna Kuperberg is a Polish mathematician who works in America. She is known for her work in dynamical systems, geometry and topology.