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On the geometry of zero sets of central quaternionic polynomials II

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arxiv 2408.08246 v2 pith:Y5WGRWPH submitted 2024-08-15 math.RA

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keywords centralpolynomialszeroalgebraalgebraicalgebrasanalyzeauthors
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Following the work of the first and last authors [2], we further analyze the structure of a zero set of a left ideal in the ring of central polynomials over the quaternion algebra H. We describe the "algebraic hull" of a point in H^n and prove it is a product of spheres. Using this description we give a new proof to a conjecture of Gori, Sarfatti and Vlacci. We also show that the main result of [2] does not extend to general division algebras.

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