Technical companion note to the flavor construction. This note formalizes the termination criterion (division-algebra rigidity) used to justify why the tower effectively stops at the octonionic stage for the flavor readout.Companion Zenodo records: Overview paper (record 10.5281/zenodo.18434449). Construction artefact (record 10.5281/zenodo.18364899). Projection Principle note (record 10.5281/zenodo.18476058).
M. Bakhtaoui (Wed,) studied this question.
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