Null- and Positivstellensätze for rationally resolvable ideals
Keywords: جبر رایگان; primary; 13J30; 16R50; secondary; 46L89; 14P05; Nullstellensatz; Free algebra; Rational identity; Division ring; Skew field; Spherical isometry; nc unitary group; Positivstellensatz; Real algebraic geometry; Free analysis;