Positive definite solution of the matrix equation X=Q+A^H(I⊗X-C)^(-δ)A
Guozhu Yao, Anping Liao, Xuefeng Duan · Electronic Journal of Linear Algebra · 2010
We consider the nonlinear matrix equation X = Q+A H (I ⊗X -C) -δ A (0 C. Two bounds for the solution of the equation are derived.This equation is related to an interpolation problem when δ = 1.Some known results in interpolation theory are improved and extended.