The generalized superoptimal preconditioner |
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| Authors: | Jian-Long Chen Xiao-Qing Jin |
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| Institution: | a Department of Mathematics, Southeast University, Nanjing 210096, PR China
b Department of Mathematics, University of Macau, Macao, PR China |
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| Abstract: | For any given n-by-n matrix A, a specific circulant preconditioner tF(A) introduced by Tyrtyshnikov E. Tyrtyshnikov, Optimal and super-optimal circulant preconditioners, SIAM J. Matrix Anal. Appl. 13 (1992) 459-473] is defined to be the solution of |
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| Keywords: | 65F10 65F15 |
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