Delzell, Charles N. Continuous sums of squares of forms. (English) Zbl 0527.10016 The L. E. J. Brouwer Centen. Symp., Proc. Conf., Noordwijkerhout/ Holl. 1981, Stud. Logic Found. Math. 110, 65-75 (1982). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 ReviewCited in 1 Document MSC: 11E10 Forms over real fields 11E76 Forms of degree higher than two 03F65 Other constructive mathematics 11U99 Connections of number theory and logic 11E20 General ternary and quaternary quadratic forms; forms of more than two variables 54H13 Topological fields, rings, etc. (topological aspects) Keywords:real closed fields; semi-algebraic; semi-positive definite polynomials; sums of squares; Hilbert 17th problem; ternary quartic forms; quadratic forms Citations:Zbl 0505.00008; Zbl 0222.10022 PDFBibTeX XML