to eq. (3.2a)\] should be explored. In particular, it is unknown to the author if a general ‘dextrad’ form of eq. (4.7) exists, nor under what conditions it would reduce to eq. (4.9a).

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The author wishes to thank the organizers of the conference for the arrangement of travel support for himself, and two graduate students: John Adams (Physics, San Francisco State U.) and Matthew Enjalran (Physics, Univ. of Mass., Amherst). Numerous conversations with J. Ryan G. Sobczyk and M. Shapiro have helped the author in matching unfamiliar mathematical terminology with physical concepts. Thanks to to Craig Harrison (Philosophy Dept., San Francisco State U.) for discussions on the interface of mathematics and physics, and in particular for pointing out reference[@Wigner]. Finally, thanks to thesis advisor G. Erickson (Physics, Univ. of Calif., Davis), who some 10 years ago guided the author in the development of the original ideas on which this paper is based.

[99]{} E.P. Wigner, ‘The Unreasonable Effectiveness of Mathematics in Natural Sciences’, in [Symmetries and Reflections- Scientific Essays]{}, (Ox Bow Press, 1979), pp. 222-237.

D. Hestenes,‘Spacetime Structure of Weak and Electromagnetic Interactions’, [*Found. Phys.*]{}, [**12**]{}, 153 (1982); ‘Observables, Operators, and Complex Numbers in the Dirac Theory’, [*J. Math. 