ON THE ROTATION OF GALAXIES FROM GENERAL-RELATIVITY

A contribution to the rotation of a galaxy, due to internal structure alone, is discussed in the context of a generalized version of the the ory of general relativity, whereby the space-time metric has a quatern ion structure. The radial dependences of the angular momentum of a con stituent star of a galaxy, relative to the remainder of its host galax y, are determined and compared in regard to the classical Newtonian th eory, Einstein's tenser form of general relativity, and the generalize d quaternion formulation of the latter theory of gravitation. The resu lts are subject to possible observational tests.