A class of iteration method for the best approximation problems |
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| Authors: | Deren Wang Fengguang Zhao |
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| Institution: | College of Sciences |
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| Abstract: | We propose a class of iteration methods searching the best approximately generalized polynomial, which has parallel computational function and converges to the exact solution quadratically. We first transform it into a special system of nonlinear equations with constraint, then by using to certain iteration method, we combine the two basic processes of the Remes method into a whole such that the iterative process of the system of nonlinear equations and the computation of the solution to the system of linear equations proceed alternately. A lot of numerical examples show that this method not only has good convergence property but also always converges to the exact solution of the problem accurately and rapidly for almost all initial approximations . |
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| Keywords: | best approximation Chebyshev alternating point set Remes method |
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