SOME PROBLEMS ON THE GAUGE FIELD THEORIES, Ⅲ

In the case of electromagnetic field with monopols, the concept of magnetic charges in the SUgauge theory with the Higgs field and that in the global Ugauge theory are shown to be equivalent mathematically. The method of description of electromagnetic fields with magnetic charges in terms of Ugauge theory and the variational method for the derivation of the world lines of charged particles is considered.