The fourth book in the series. In book one, we have a structure of differential forms endowed with an exterior product, and a concept of derivative that reflects it. In book 2, our differential forms become tensor valued. In book three the differential forms acquire a Clifford structure. In book four, the tangent tensors that constitute the valuedness coefficients of the differential forms also acquire a Clifford structure. Either in this book or in book two, we shall deal with Finsler bundles. It will be in this book, however, where we shall use the insights that Finsler bundles provide in order to develop a theory of Kaluza-Klein spaces associated with those Finsler bundles and where gravitation and quantum physics come together, ab initio.
Jose Vargas and Doug Torr will make every effort to respond to questions on their papers and the subject of Cartan-Kähler Unification.