Oswald Veblen

Oswald Veblen
Oswald Veblen (photograph c. 1915)
Born	(1880-06-24)June 24, 1880 Decorah, Iowa, U.S.
Died	August 10, 1960(1960-08-10) (aged 80) Brooklin, Maine, U.S.
Alma mater	University of Iowa Harvard University University of Chicago
Known for	Veblen function Veblen hierarchy Veblen ordinal Veblen's theorem Veblen–Young theorem Veblen–Wedderburn systems Fixed-point lemma for normal functions
Scientific career
Institutions	Princeton University Institute for Advanced Study
Thesis	A System of Axioms for Geometry (1903)
Doctoral advisor	E. H. Moore
Doctoral students	J. W. Alexander H. Roy Brahana Alonzo Church Philip Franklin Wallace Givens Harold Hotelling Howard H. Mitchell Robert Lee Moore Tracy Thomas J. H. C. Whitehead

Oswald Veblen (June 24, 1880 – August 10, 1960) was an American mathematician, geometer and topologist, whose work found application in atomic physics and the theory of relativity. He proved the Jordan curve theorem in 1905;^[1] while this was long considered the first rigorous proof of the theorem, many now also consider Camille Jordan's original proof rigorous.