Abstract
In this paper, a new trust-region subproblem combining with the BFGS update is proposed for solving nonlinear equations, where the trust region radius is defined by a new way. The global convergence without the nondegeneracy assumption and the quadratic convergence are obtained under suitable conditions. Numerical results show that this method is more effective than the norm method.
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This work is supported by China NSF grands 10761001, the Scientific Research Foundation of Guangxi University (Grant No. X081082), and Guangxi SF grands 0991028.
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Yuan, G., Wei, Z. & Lu, X. A BFGS trust-region method for nonlinear equations. Computing 92, 317–333 (2011). https://doi.org/10.1007/s00607-011-0146-z
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DOI: https://doi.org/10.1007/s00607-011-0146-z