%0 Journal Article
%A Bradley Delso, Margarita
%T Convex-Hull Of Polynomials And Sums Of 2m-Th Powers
%D 1989
%@ 0764-4442
%U https://hdl.handle.net/20.500.14352/57161
%X Using some elementary theory of convex sets we prove a necessary and a sufficient condition for f ε R[x„ . . ., x„](R being the real numbers) to be a finite sum of 2m-th powers of rational functions in x1, . . ., x n over R[i.e.f ε ∑ R(x)2 m]
%~