Presents Block-Shifted CR algorithm using SVD and deflation to extend convergence of cyclic reduction for quadratic matrix equations with multiple unit-circle eigenvalues.
Guo, On a quadratic matrix equation associated with anM-matrix, IMA J
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A Block-Shifted Cyclic Reduction Algorithm for Solving a Class of Quadratic Matrix Equations
Presents Block-Shifted CR algorithm using SVD and deflation to extend convergence of cyclic reduction for quadratic matrix equations with multiple unit-circle eigenvalues.