Singer, Ivan. Duality for nonconvex approximation and optimization [Book] / Ivan Singer. - New York : Springer, c2006. - xviii, 355 p. : ill. ; 25 cm. - CMS books in mathematics = Ouvrages de mathmÌŒatiques de la SMC ; 24 . All. ISBN: 0387283943 Subjects--Topical Terms: Convex functions.Convex sets.Duality theory (Mathematics).Approximation theory.Convex domains.Convexity spaces. Dewey Class. No.: 515.8