Mathematical Inequalities & Applications · Volume 18, Issue 2 Concavity of the function f(A) = det(I - A) for density operator A 18-43 Pages 581-588 DOI 10.7153/mia-18-43 Downloads Short PDF Full PDF PNG Authors Yan-Ni Dou Hai Du Yuan Li Keywords concave function density operator inequality Subject classes 33B99 47A05