A preconditioning strategy for banded circulant and toeplitz systemsCaf, Dušan (Avtor) Evans, David J. (Avtor) optimal preconditionerTöplitz systemsPCG algorithmA new preconditioning strategy for symmetric positive definite banded circulant and Toeplitz systems is described. The optimal tridiagonal preconditioner for tridiagonal circulant systems is modified and applied to both circulant and Toeplitz banded systems. The strategy is extended to block tridiagonal systems. The parallelisation aspects of the PCG algorithm are discussed.19982012-06-01 14:01:34Neznano28146UDK: 519.6COBISS_ID: 12238870ISSN pri članku: 0020-7160NUK URN: URN:SI:UM:DK:TYKCEMJWsl