A Strong Method for Symmetric Homogeneous Polynomial Inequalities of Degree Six in Nonnegative Real Variables
Vasile Cirtoaje *
Department of Automatic Control and Computers, University of Ploiesti, Bdul Bucuresti, 39, Ploiesti, Romania.
*Author to whom correspondence should be addressed.
Abstract
Let f6(x, y, z) be a symmetric homogeneous polynomial of degree six. Based on cancelling the high coefficient of f6(x, y, z), we give some practical sufficient conditions to have f6(x, y, z) ≥ 0 for any nonnegative real variables x, y, z. Some applications are given in order to emphasize the effectiveness of the proposed method.
Keywords: Symmetric homogeneous inequality, Sixth degree polynomial, Sufficient conditions, Highest coefficient, Nonnegative real variables.