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arXiv 1401.7633math.APmath.CVmath.FAmath.OC
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具有指定逐点值的解析函数类中的约束optimization

Constrained optimization in classes of analytic functions with prescribed pointwise values

Laurent Baratchart, Juliette Leblond, Dmitry Ponomarev

摘要:

考虑了具有部分边界数据的圆盘上Laplace方程的超定问题,其中必须考虑圆盘内部的点态数据。经过重新表述,这个不适定问题减少到一个有界极值问题的最佳范数约束逼近的部分L2边界数据的全纯函数的轨迹,满足给定的逐点插值条件。在[Baratchart \& Leblond,1998]中,已经考虑了给定L2函数在圆的子集上由H2函数的迹的最佳范数约束逼近的问题。在目前的工作中,我们扩展这样的配方的情况下,施加额外的插值条件。我们还获得了一些新的结果,可以应用到原来的问题:我们进行稳定性分析,并提出了一种新的方法来评估的近似和爆破率的解决方案的拉格朗日参数导致一个高效的计算算法来解决这个问题。

英文摘要:

We consider an overdetermined problem for Laplace equation on a disk with partial boundary data where additional pointwise data inside the disk have to be taken into account. After reformulation, this ill-posed problem reduces to a bounded extremal problem of best norm-constrained approximation of partial L2 boundary data by traces of holomorphic functions which satisfy given pointwise interpolation conditions. The problem of best norm-constrained approximation of a given L2 function on a subset of the circle by the trace of a H2 function has been considered in [Baratchart \& Leblond, 1998]. In the present work, we extend such a formulation to the case where the additional interpolation conditions are imposed. We also obtain some new results that can be applied to the original problem: we carry out stability analysis and propose a novel method of evaluation of the approximation and blow-up rates of the solution in terms of a Lagrange parameter leading to a highly-efficient computational algorithm for solving the problem.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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