“…More recent constructions have sought to extend these earlier results by describing additional SM structure in terms of tensor products of division algebras [2,3,4,5,6,7]. Many others have contributed to these, and related, algebraic approaches including those based on topology [8,9,10,11,12], exceptional Lie groups [13,14,15,16,17,18], Clifford algebras [19,20,21,22,23,24,25,26,27], and Jordan algebras [28,29,30,31,32,33].…”