We have decided to discontinue the publication of preprints on our preprint server end of 2024. The publication culture within mathematics has changed so much due to the rise of repositories such as ArXiV (www.arxiv.org) that we are encouraging all institute members to make their preprints available there. An institute's repository in its previous form is, therefore, unnecessary. The preprints published to date will remain available here, but we will not add any new preprints here.
In paper [1] mathematical self-consistency of a new theory of interacting "electromagnetic field + pointlike particles" system was analyzed. It was proved that the the initial value problem for both field and particles is well posed. For that purpose the asymptotic behaviour of the field in a neighbourhood of the particle was necessary. It was obtained using symbolic calculus package based on MATHEMATICA. For purposes of an extended theory, where particles may get polarization due to interaction, or may carry an angular momentum (spin) the above description of the asymptotic field near to particles is not sufficient. In the present paper we propose a different algorithm, which enables us to solve the problem in a much simpler way. To implement practically our algorithm we have used packages of symbolic calculus of the program MAPLE V.
[1] H. P. Gittel, J. Kijowski, E. Zeidler:The Relativistic Dynamics of the Combined Particle-Field System in Nonlinear Renormalized Electrodynamics, Comm. Math. Phys. 198 (1998) p. 711 - 736