Anna Margaret Mullikin (1893–1975) was an American mathematician who was one of the early investigators of point set theory.
She was Robert Lee Moore's third student, graduating with her PhD in 1922 with a dissertation titled Certain Theorems Relating to Plane Connected Point Sets.
Her dissertation was published that year in Transactions of the American Mathematical Society[4] and subsequently became the catalyst for significant advances in the field of topology.
"[3] During 1921–1922, while studying for her doctorate, she taught at Oak Lane Country Day School, which served preschool and elementary-aged children in Pennsylvania.
[5] At Germantown High School she was named department head of the mathematics in 1952, and she remained there until her retirement in 1959.