Procesi, Claudio; Schacher, Murray A non-commutative real Nullstellensatz and Hilbert’s 17th problem. (English) Zbl 0347.16010 Ann. Math. (2) 104, 395-406 (1976). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 4 ReviewsCited in 23 Documents MSC: 16W10 Rings with involution; Lie, Jordan and other nonassociative structures 16Kxx Division rings and semisimple Artin rings 14A05 Relevant commutative algebra PDFBibTeX XMLCite \textit{C. Procesi} and \textit{M. Schacher}, Ann. Math. (2) 104, 395--406 (1976; Zbl 0347.16010) Full Text: DOI