"1991Z"^^ . . . . . "1991-05-31Z"^^ . . . . "Hestenes, Magnus"@en . . "American mathematician" . "Magnus Hestenes"@en . . "1906Z"^^ . . "Magnus Rudolph Hestenes (1906 \u2013 May 31, 1991) was an American mathematician. Together with Cornelius Lanczos and Eduard Stiefel, he invented the conjugate gradient method.Born in Bricelyn, Minnesota, Hestenes earned his Ph.D. at the University of Chicago in 1932 under Gilbert Bliss. His dissertation was titled \"Sufficient Conditions for the General Problem of Mayer with Variable End-Points.\" After teaching as an associate professor at Chicago, in 1947 he moved to a professorship at UCLA."@en .