Abstract
In this paper, we consider the nonlinear matrix equation \(X^{p}=Q +\sum \nolimits _{i=1}^m A_i^*X^{\delta }A_i,\) where \(A_i (i=1,2,\ldots ,m)\) are \(n\times n\) nonsingular complex matrices, Q is a \(n\times n\) Hermitian positive definite (HPD) matrix, \(p\ge 1, m\ge 1\) are positive integers, and \(\delta \in (0,1)\). We discuss the solution of this equation via properties of Thompson metric and two fixed point theorems in ordered Banach spaces and estimate the bounds of the HPD solution. Furthermore, perturbation analysis is investigated.
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This paper was supported financially by Shanxi Province Science Foundation (201901D111020) and Graduate Science and Technology Innovation Project of Shanxi (2019BY014).
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Communicated by Jinyun Yuan.
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Jin, Z., Zhai, C. Investigation of positive definite solution of nonlinear matrix equation \(X^{p}=Q +\sum \nolimits _{i=1}^m A_i^*X^{\delta }A_i\). Comp. Appl. Math. 40, 74 (2021). https://doi.org/10.1007/s40314-021-01463-0
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DOI: https://doi.org/10.1007/s40314-021-01463-0