Oswald Veblen (1880-1960). Born in Decorah, Iowa,
U.S.A. Entered the University of Iowa in 1894, receiving his
B.A. in 1898. He obtained his doctorate from the University of
Chicago on “a system of axioms in geometry” in 1903. He taught
mathematics at Princeton (1905-1932), at Oxford in 1928-1929, and
became a professor at the Institute for Advanced Study in Princeton
in 1932. Veblen made important contribution to projective and
differential geometry, and to topology. He gave a new treatment of
spin.