Semidefinite programming, Global optimization, Positive polynomial, Sum of squares of polynomials, Approximation algorithm
Semidefinite programming (msc 90C22), Nonconvex programming, global optimization (msc 90C26), Methods of relaxation type (msc 49M20)
Logistics (theme 3)
Theoretical Computer Science
Semidefinite programming and combinatorial optimization
Networks and Optimization

de Klerk, E, Laurent, M, & Parrilo, P. (2006). A PTAS for the minimization of polynomials of fixed degree over the simplex. Theoretical Computer Science, 361(2-3), 210–225.