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.