Busch–Gudder metric on the Cone of Positive Semidefinite Operators and Its Isometries

Transformations Preserving Norms of Means of Positive Operators and Nonnegative Functions

(2015) Lajos Molnár et al.   INTEGRAL EQUATIONS AND OPERATOR THEORY

Maps preserving general means of positive operators

(2015) Lajos Molnar   Electronic Journal of Linear Algebra

Positive Toeplitz operators on the Bergman space

(2014) Namita Das et al.   Annals of Functional Analysis

Surjective isometries on Grassmann spaces

(2013) Fernanda Botelho et al.   JOURNAL OF FUNCTIONAL ANALYSIS

Symmetries of Hilbert space effect algebras

(2013) Peter Šemrl   JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES

Maps preserving the harmonic mean or the parallel sum of positive operators

(2009) Lajos Molnár   LINEAR ALGEBRA AND ITS APPLICATIONS

Maps preserving the geometric mean of positive operators

(2009) Lajos Molnár   PROCEEDINGS OF THE AMERICAN MATHEMATICAL SOCIETY

Isometries of the space of distribution functions with respect to the Kolmogorov–Smirnov metric

(2008) Gregor Dolinar et al.   JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS