Abstract
A uniqueness theorem of a solution of a system of nonlinear equations is given. Using this result uniqueness theorems for power orthogonal polynomials, for a Gaussian quadrature formula of an extended Chebyshev system, and for a Gaussian Birkhoff quadrature formula are easily deduced.
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Supported by the National Natural Science Foundation of China (No. 11171100, 10871065 and 11071064), and by the Research Project of Fujian Agriculture and Forestry University (No. KXML2028A).
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Liu, R. A uniqueness theorem of a system of nonlinear equations and its applications. Acta Math. Appl. Sin. Engl. Ser. 31, 111–120 (2015). https://doi.org/10.1007/s10255-015-0454-8
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DOI: https://doi.org/10.1007/s10255-015-0454-8
Keywords
- uniqueness theorems
- power orthogonal polynomials
- Gaussian quadrature formula
- extended Chebyshev system
- Gaussian Birkhoff quadrature formula