Mathematical Inequalities & Applications · Volume 22, Issue 2 Characterization of operator convex functions by certain operator inequalities 22-40 Pages 565-575 DOI 10.7153/mia-2019-22-40 Downloads Short PDF Full PDF PNG Authors Hiroyuki Osaka Yukihiro Tsurumi Shuhei Wada Keywords operator means operator monotone functions operator convex functions Subject classes 47A64 47A63