American mathematician Anna Johnson Pell Wheeler was born #OTD in 1883.
She received her Ph.D. in 1909 with a dissertation on "Biorthogonal Systems of Functions with Applications to the Theory of Integral Equations," a topic in functional analysis that was innovative at the time. Wheeler was instrumental in bringing German mathematician Emmy Noether to Bryn Mawr in 1933, after the latter's expulsion from the University of Göttingen by the Nazi government.
