The Okubo algebra's integral shells form a two-adic hierarchy of polytopes that decompose into W(B8) orbits on a rescaled cubic lattice, recovering the E8 Gosset polytope by maximal-isotropic gluing along (Z/2)^4.
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Integral Shell Polytopes of Composition Algebras
The Okubo algebra's integral shells form a two-adic hierarchy of polytopes that decompose into W(B8) orbits on a rescaled cubic lattice, recovering the E8 Gosset polytope by maximal-isotropic gluing along (Z/2)^4.