Abstract
In several earlier papers the author developed an approximation method for finding the Lorentz-covariant equations of structure and motion of interacting particles represented by singularities in Einstein's theory of the nonsymmetric field. In this paper we show that two of the quantities which describe the structure of such particles — the coefficient of diffuse electric charge and the localized electric charge — can be considered, with no loss in generality, as time-independent to all orders of approximation.