Authors: Braicov A. V., Macari P. M., Popa Mihail, Port S. A.
Abstract
It is shown that the linear space of center-affine comitants of a given type is isomorphic to the linear space of unimodular comitants of the same type of a differential system of equations. Generalized and common Hilbert's series for graded algebras of differential system comitants are established.Institutul de Matematică Academia de Ştiinţe a Moldovei
str. Academiei 5, Chişinău, MD-2028 Moldova
str. Academiei 5, Chişinău, MD-2028 Moldova
