基于正规锥上单调算子的不动点定理,本文研究非线性矩阵方程X-i-1∑^m Ai^*X^δAi=Q的正定解。给出了正定解的存在性定理,并且构造了求解的m步定常迭代方法,最后证明了该迭代法的收敛性。
Based on the monotone operator fixed point theorem in normal cone, the positive definite solution of the nonlinear matrix equation X-i-1∑^m Ai^*X^δAi=Q is investigated. The existence theorem for a unique positive definite solution is given. A sort of m-step stationary iterative method is proposed to compute the unique positive definite solution and its convergence is proved.