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arXiv 2008.12801math.MG
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赋范平面上的等周不等式

Isoperimetric Inequalities in Normed Planes

Rafael Segadas dos Santos, Marcos Craizer

摘要:

经典的等周不等式可以推广到一般的赋范平面上。在欧几里德平面上,等周不等式的亏度可以用某些奇异集的带符号面积来计算。本文研究了单位球的赋范平面及相应的容许曲线类。对于这样的容许曲线,奇异集被定义为对称的等宽容许曲线的子空间中的投影。在此背景下,我们得到了一些改进的等周不等式,其等式对对称曲线或等宽曲线成立。

英文摘要:

The classical isoperimetric inequality can be extended to a general normed plane. In the Euclidean plane, the defect in the isoperimetric inequality can be calculated in terms of the signed areas of some singular sets. In this paper we consider normed planes with smooth by parts unit balls and the corresponding class of admissible curves. For such an admissible curve, the singular sets are defined as projections in the subspaces of symmetric and constant width admissible curves. In this context, we obtain some improved isoperimetric inequalities whose equality hold for symmetric or constant width curves.

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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