Helgason, Sigurdur, 1927- Differential geometry, Lie groups, and symmetric spaces Sigurdur Helgason - New York Academic Press 1978 - xv, 628 p. 24 cm. - Pure and applied mathematics, a series of monographs and textbooks 80 . Subjects--Topical Terms: Geometry, DifferentialLie groupsSymmetric spaces Dewey Class. No.: 510 / .8 s