Ruminations on Matrix Con
Ruminations on Matrix Convexity and the Strong Subadditivity of Quantum Entropy
Ruminations on Matrix Convexity and the Strong Subadditivity of Quantum Entropy
The familiar second derivative test for convexity, combined with resolvent calculus, is shown to yield a useful tool for the study of convex matrix-valued functions. We demonstrate the applicability of this approach on a number of theorems in this field. These include convexity principles which play…
