We obtain in this paper a considerable improvement over a method developed earlier by Ballester and Pereyra for the solution of systems of linear equations with Vandermonde matrices of coefficients.

C. G. Khatri, Sujit Kumar Mitra, Hermitian and Nonnegative Definite Solutions of Linear Matrix Equations, SIAM Journal on Applied Mathematics, Vol. 31, No. 4 (Dec ...

Two teams found different ways for quantum computers to process nonlinear systems by first disguising them as linear ones.