1. Optimization and approximation of NC polynomials with sums of squares
Kristijan Cafuta, Igor Klep, Janez Povh, 2010, published scientific conference contribution

Keywords: nekomunitativni polinomi, vsota kvadratov, semidefinitno programiranje, pozitivnost sledi, optimizacija lastnih vrednosti, prosta pozitivnost, non-commutative polynomial, sum of hermitian squares, trace optimization, eigenvalue optimization
Full text (outside link)