Jensen's operator inequality and its converses Authors Frank Hansen Josip Pecaric Ivan Peric DOI: https://doi.org/10.7146/math.scand.a-15016 Abstract We give a general formulation of Jensen's operator inequality for unital fields of positive linear mappings, and we consider different types of converse inequalities. Downloads PDF Published 2007-03-01 Issue Vol. 100 No. 1 (2007) Section Articles