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- W2048320827 abstract "Any nonsingular matrix has pth roots. One way to compute matrix pth roots is via a specialized version of Newton's method, but this iteration has poor convergence and stability properties in general. A Schur algorithm for computing a matrix pth root that generalizes methods of Björck and Hammarling [Linear Algebra Appl., 52/53 (1983), pp. 127--140] and Higham [Linear Algebra Appl., 88/89 (1987), pp. 405--430] for the square root is presented. The algorithm forms a Schur decomposition of A and computes a pth root of the (quasi-)triangular factor by a recursion. The backward error associated with the Schur method is examined, and the method is shown to have excellent numerical stability." @default.
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- W2048320827 date "2003-01-01" @default.
- W2048320827 modified "2023-09-26" @default.
- W2048320827 title "A Schur Algorithm for Computing Matrix <i>p</i>th Roots" @default.
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- W2048320827 doi "https://doi.org/10.1137/s0895479801392697" @default.
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