Isotropy groups of the action of orthogonal $^\ast$congruence on Hermitian matricesStarčič, Tadej (Avtor) isotropy groupsmatrix equationscomplex orthogonal matricesHermitian matricesToeplitz matricesWe present a procedure which enables the computation and the description of structures of isotropy subgroups of the group of complex orthogonal matrices with respect to the action of $^\ast$congruence on Hermitian matrices. A key ingredient in our proof is an algorithm giving solutions of a certain rectangular block (complex-alternating) upper triangular Toeplitz matrix equation.20242024-05-20 13:58:19Članek v reviji156331sl