# Mathematician:Mary Ellen Rudin

American topologist best known for creating counterexamples to conjectures in point-set topology, and especially for being the first person to construct a Dowker Space, disproving a long-standing conjecture.

Born Mary Ellen Estill, under which name she published several papers before her marriage.

American

## Books, Publications, etc.

• 1950: Concerning Abstract Spaces
• 1951: Separation in Non-Separable Spaces
• 1952: A Primitive Dispersion Set of the Plane
• 1952: Concerning a Problem of Souslin's
• 1955: Countable Paracompactness and Souslin's Problem
• 1971: A Normal Space $X$ for which $X \times I$ is not Normal