Note on coefficient matrices from stochastic Galerkin methods for random diffusion equations (Q602918)

In a recent work by \textit{D. Xiu} and \textit{J. Shen} [J. Comput. Phys. 228, No.~2, 266--281 (2009; Zbl 1161.65008)], the Galerkin methods are used to solve stochastic diffusion equations in random media, where some properties for the coefficient matrix of the resulting system provided. They also posed an open question on the properties of the coefficient matrix. In this work, some results related to the open question are provided.