Ph.D. University of Chicago, Illinois, 1910
Hildebrandt spent most of his career at the University of Michigan (1909-1957), where he served as chair of the mathematics department from 1934 until his retirement in 1957. He did important work in functional analysis and integration theory, and in 1923 gave the first general proof of the principle of uniform boundedness for Banach spaces. He is honored by the T.H. Hildebrandt Assistant Professorships in the University of Michigan mathematics department.