arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1009.0897math.MG
收藏

双曲平面等周定理的一个简单证明

A simple proof of the isoperimetric theorem for the hyperbolic plane

A. Skopenkov

摘要:

在这篇教学笔记中,我们对arxiv.org/abs/0911.5319的以下主要结果给出了一个简短的证明,并阐明了它与等周问题的关系。在双曲平面上,考虑三角形ABC,其长度为AB和AC。对于三角形ABC,这些三角形的最大面积被获得,使得\angle A= \angle B+ \angle C。其证明与上述论文基本相同。然而,由于结果是美丽的和重要的,一个简短的证明清除不必要的细节可能是有趣的读者。熟悉初等双曲几何的学生可以读到这个注释。(This注基于上述文件的裁判报告,见www.mccme.ru/mmks)

英文摘要:

In this pedagogical note we present a short proof of the following main result of arxiv.org/abs/0911.5319, and clarify its relation to the isoperimetric problem. On the hyperbolic plane consider triangles ABC with fixed lengths of AB and AC. The maximal area of these triangles is attained for the triangle ABC such that \angle A=\angle B+\angle C. The proof is essentially the same as in the above-cited paper. However, since the result is beautiful and important, a short proof cleared of unnecessary details could be interesting for a reader. The note is accessible for students familiar with elementary hyperbolic geometry. (This note is based on referee reports to the above paper, see www.mccme.ru/mmks)

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。

↑