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# Refinements of Choi – Davis – Jensen ’ S Inequality

@inproceedings{Khosravi2011RefinementsOC, title={Refinements of Choi – Davis – Jensen ’ S Inequality}, author={Maryam Khosravi and Jaspal Singh Aujla and Sever Silvestru Dragomir and Mohammad Sal Moslehian}, year={2011} }

- Published 2011

Let Φ1, . . . ,Φn be strictly positive linear maps from a unital C∗algebra A into a C∗-algebra B and let Φ = ∑n i=1 Φi be unital. If f is an operator convex function on an interval J , then for every self-adjoint operator A ∈ A with spectrum contained in J , the following refinement of the Choi– Davis–Jensen inequality holds: