| 摘 要： | ![]()
The polynomial accelerations are very efficient methods for solving largesparse linear systems.In[2]we discussed the general polynomial accelerationmethods based on basic iteration methods for solving singular systems,especi-ally,the Chebyshev semi-iteration and the preconditioned conjugate gradientacceleration.In[4]E.F.Kaasschieter discussed the preconditioned conjugategradients for solving singular systems of which the coefficient matrices aresingular Stieljes matrices by using incomplete Cholesky decomposition as
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