Double Well Potential Function and Its Optimization in the n-dimensional Real Space - Part II
Double Well Potential Function and Its Optimization in the n-dimensional Real Space - Part II
复制标题
N 维实空间中的双阱势函数及其优化 - 第二部分
DOI:
10.3934/jimo.2016074
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发表时间:
2014-04
影响因子:
1.3
通讯作者:
Xing Wenxun
中科院分区:
文献类型:
--
作者:
Xia Yong;Sheu Ruey-Lin;Fang Shu-Cherng;Xing Wenxun
In contrast to taking the dual approach for finding a global minimum solution of a double well potential function, in Part II of the paper, we characterize a local minimizer, local maximizer, and global minimizer directly from the primal side. It is proven that, for a ``nonsingular" double well function, there exists at most one local, but non-global, minimizer and at most one local maximizer. Moreover, when it exists, the local maximizer is ``surrounded" by local minimizers in the sense that the norm of the local maximizer is strictly less than that of any local minimizer. We also establish some necessary and sufficient optimality conditions for the global minimizer, local non-global minimizer and local maximizer by studying a convex secular function over specific intervals. These conditions lead to three algorithms for identifying different types of critical points of a given double well function.
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DOI:
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