Euler’s optimal profile problem

Euler’s optimal profile problem
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欧拉最优轮廓问题

DOI:
10.1007/s00526-020-1707-9
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发表时间:
2019
影响因子:
2.1
通讯作者:
D. Percivale
D. Percivale
中科院分区:
数学2区
文献类型:
--
作者:
F. Maddalena;E. Mainini;D. Percivale

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本文用变分法的直接方法研究了欧拉在其《海军科学》第53号命题中提出的一个老变分问题。确切地说,通过松弛论证,我们证明了极小值的存在性。我们充分研究了几何参数依赖性的最小值的解析结构,并确定了唯一性和非唯一性的范围。
We study an old variational problem formulated by Euler as Proposition 53 of his Scientia Navalis by means of the direct method of the calculus of variations. Precisely, through relaxation arguments, we prove the existence of minimizers. We fully investigate the analytical structure of the minimizers in dependence of the geometric parameters and we identify the ranges of uniqueness and non-uniqueness.