Semidefinite-representable sets over valued fields K admit non-polyhedral spectrahedra and proper representable sets that are not spectrahedra, with a Smith-normal-form algorithm for the linear case.
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On semidefinite-representable sets over valued fields
Semidefinite-representable sets over valued fields K admit non-polyhedral spectrahedra and proper representable sets that are not spectrahedra, with a Smith-normal-form algorithm for the linear case.