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Spinor structures always exist in hyperbolic Clifford bundles

J. M. Hoff da Silva, E. Notte-Cuello

May 15, 2026

Spinor fields on a manifold normally require the tangent bundle to satisfy a specific topological condition—the vanishing of a certain characteristic class—which can fail and block their existence. By carefully tracking how obstruction classes behave under the Whitney sum construction specific to hyperbolic Clifford algebras, this analysis shows the relevant frame bundle always admits a spin lifting. The implication is that hyperbolic Clifford bundles provide a geometry in which spinor structures are universally available, free of the topological restrictions that constrain ordinary spacetime formulations.
Published as Notes on obstructions in the hyperbolic Clifford algebra bundle structure arXiv:2605.16558
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