Representations of multivariate polynomials by sums of univariate polynomials in linear forms
Andrzej Białynicki-Birula, Andrzej Schinzel · Colloquium Mathematicum · 2008
The paper is concentrated on two issues: presentation of a multivariate polynomial over a field $K$, not necessarily algebraically closed, as a sum of univariate polynomials in linear forms defined over $K$, and presentation of a form, in particular a zer