Classical formulations of the electromagnetic self-force of extended charged bodies

Several formulations of the classical electrodynamics of charged particles, as have been developed in the course of the twentieth century, are compared. The mathematical equivalence of the various dissimilar expressions for the electromagnetic self-force is demonstrated explicitly by deriving these expressions directly from one another. The new connections that are established present the previously published results on a common basis, thereby contributing to a coherent historical picture of the development of charged particle models.