Jointly convex mappings related to the Lieb's functional and Minkowski type operator inequalities

Mohsen Kian, Yuki Seo

Employing the notion of operator log-convexity, we study joint concavity$/$ convexity of multivariable operator functions: $(A,B)\mapsto F(A,B)=h\left[\Phi (f(A))\sigma \Psi (g(B))\right]$,…