A Grüss type operator inequality
arXiv:1602.05496 · doi:10.1215/20088752-3764566
Abstract
In [P. Renaud, "A matrix formulation of Grüss inequality", Linear Algebra Appl. 335 (2001), 95--100] it was proved an operator inequality involving the usual trace functional. In this article, we give a refinement of such result and we answer positively the Renaud's open problem.