Complexity (Jan 2021)

The MGHSS for Solving Continuous Sylvester Equation AX+XB=C

  • Yu-Ye Feng,
  • Qing-Biao Wu,
  • Xue-Na Jing

DOI
https://doi.org/10.1155/2021/6615728
Journal volume & issue
Vol. 2021

Abstract

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This paper proposes the modified generalization of the HSS (MGHSS) to solve a large and sparse continuous Sylvester equation, improving the efficiency and robustness. The analysis shows that the MGHSS converges to the unique solution of AX + XB = C unconditionally. We also propose an inexact variant of the MGHSS (IMGHSS) and prove its convergence under certain conditions. Numerical experiments verify the efficiency of the proposed methods.