TY - JOUR AU - Hansen, Frank AU - Pedersen, Gerd Kjaergard TI - Jensen's Inequality for Operators and Löwner 's Theorem. JO - Mathematische Annalen PY - 1981 VL - 258 SP - 229 EP - 242 KW - operator monotone function; operator convex function UR - http://eudml.org/doc/163592 ER -