# Mathematician:Mary Ellen Rudin

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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.

## Nationality

American

## History

- Born: 7 Dec 1924 in Hillsboro, Texas, USA
- 1941: Entered University of Texas
- 1944: Graduated with B.A.
- 1949: Received Ph.D., began teaching at Duke University
- 1953: Married Walter Rudin
- 1953 - 1958: Part time Associate Professorship at University of Rochester
- 1959 - 1971: Temporary part time Lecturer in Mathematics at University of Wisconsin (Madison)
- 1963: Awarded prize of
*Nieuwe Archief voor Wiskunk*by the Mathematical Society of the Netherlands - 1971: Promoted to full professor
- Died: 18 Mar 2013

## Theorems and Definitions

## 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*