Della Jeanne Dumbaugh (also published as Della Dumbaugh Fenster) is an American mathematician and historian of mathematics, focusing on the history of algebra and number theory.
Her dissertation, Leonard Eugene Dickson and His Work in the Theory of Algebra, concerned the work of Leonard Eugene Dickson (1874–1954), one of the first American mathematicians to work in abstract algebra.
[3] Dumbaugh was named editor-in-chief of The American Mathematical Monthly for a five-year term, beginning in January 2022.
[1][2] With Joachim Schwermer, Dumbaugh is a coauthor of the book Emil Artin and Beyond – Class Field Theory and L-Functions (Heritage of European Mathematics, European Mathematical Society, 2015), concerning the work of Emil Artin and others on class field theory and L-functions.
[2] Dumbaugh was the 2019 winner of the John M. Smith Award for Distinguished College or University Teaching of the Mathematical Association of America.