The complex Reznick Positivstellensatz is proved with improved bounds via an explicit inversion of the Chiribella identity, yielding better exponential de Finetti error estimates; the real-case version is not yet established because a lemma has a wrong constant.
Concrete Mathematics, 2nd Edition
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A refinement of Reznick's Positivstellensatz with applications to quantum information theory
The complex Reznick Positivstellensatz is proved with improved bounds via an explicit inversion of the Chiribella identity, yielding better exponential de Finetti error estimates; the real-case version is not yet established because a lemma has a wrong constant.