Automorphisms for the logarithmic product of positive semidefinite operators
Грегор Долинар, Lajos Molnár · Linear and Multilinear Algebra · 2012
In this article we consider the set of all positive semidefinite linear operators on a finite-dimensional complex Hilbert space equipped with the so-called logarithmic product. We describe the general form of all automorphisms of this structure which are continuous at 0.