Symmetric distributions for dependent unit vectors
In this work the author generalizes the definitions of symmetry given in his paper reviewed above, Zbl 0545.62035, for the joint distribution of two dependent unit vectors and introduces bivariate generalization of D- symmetry and rotational symmetry. If the joint distribution of the two unit vectors is at least D-symmetric the information matrix for the parameters indexing it is shown to have a simple shape.
joint distribution of two dependent unit vectors
scientific article; zbMATH DE number 3868436