J. Rätz

发表

On orthogonally additive mappings

J. Rätz, 1982 .

On the characterization of lorentz transformations by a functional equation

J. Rätz, 1983 .

The 52nd International Symposium on Functional Equations Grillhof, Innsbruck (Austria), June 22–29, 2014

Z. Páles, J. Rätz, J. Schwaiger, 2015, Aequationes mathematicae.

On Isometries of Generalized Inner Product Spaces

J. Rätz, 1970 .

On a functional equation related to projections of abelian groups

J. Rätz, 2005 .

On Light-Cone-Preserving Mappings of the Plane

J. Rätz, 1983 .

On orthogonally additive mappings

J. Rätz, 1982 .

On Approximately Additive Mappings

J. Rätz, 1980 .

Quadratic Functionals Satisfying a Subsidiary Inequality

J. Rätz, 1978 .

Characterization of inner product spaces by means of orthogonally additive mappings

J. Rätz, 1999 .

Comparison of inner products

J. Rätz, 1999 .

On orthogonally additive mappings III

J. Rätz, 1989 .

The 58th International Symposium on Functional Equations Bilesdungshaus Grillhof, Innsbruck (Austria), June 19–26, 2022 Dedicated to the memory of János Aczél, founder of the Symposia

Z. Daróczy, Z. Páles, G. Forti, 2022, Aequationes Mathematicae.

Conditional functional equations and orthogonal additivity

L. Paganoni, J. Rätz, 1995 .

On inequalities associated with the Jordan-von Neumann functional equation

Jürg Rätz, J. Rätz, 2003 .

Orthogonality and additivity modulo a subgroup

K. Baron, J. Rätz, 1993 .

On the functional equation x + f (y + f(x)) = y + f (x + f(y)), II

Jürg Rätz, J. Rätz, 2015 .

The 57th International Symposium on Functional Equations Dom Zdrojowy SPA Hotel, Jastarnia (Polandfc

J. Aczél, Z. Daróczy, Z. Páles, 2019, Aequationes mathematicae.

Convex functions with respect to an arbitrary mean

J. Matkowski, J. Rätz, 1997 .

Convexity of power functions with respect to symmetric homogeneous means

J. Matkowski, J. Rätz, 1997 .

On Wigner's theorem: Remarks, complements, comments, and corollaries

J. Rätz, 1996 .

On the functional equation x + f(y + f(x))=y + f(x + f(y))

J. Rätz, 2013 .