. . . . "2011" . . . "1936" . . . . . . . . . . . "John E. Osborn (mathematician)" . . . . . . . . . . . . . . . "John Osborn" . . . . . . "John E. Osborn (mathematician)" . . . . "2011-05-30" . "1936-07-12" . . . . . . . . . . .