TITLE:
Iterative Methods for Solving the Nonlinear Matrix Equation X-A*XpA-B*X-qB=I (0p,q
AUTHORS:
Dongjie Gao
KEYWORDS:
Nonlinear Matrix Equation, Positive Definite Solution, Iterative Method, Normal Cone
JOURNAL NAME:
Advances in Linear Algebra & Matrix Theory,
Vol.7 No.3,
September
27,
2017
ABSTRACT: Consider the nonlinear matrix equation X-A*XpA-B*X-qB=I (0p,q1). By using the fixed point theorem for mixed monotone operator in a normal cone, we prove that the equation with 0p,q1 always has the unique positive definite solution. Two different iterative methods are given, including the basic fixed point iterative method and the multi-step stationary iterative method. Numerical examples show that the iterative methods are feasible and effective.