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arXiv 1702.01449math.DG
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赋范平面中曲率的概念

Concepts of curvatures in normed planes

Vitor Balestro, Horst Martini, Emad Shonoda

摘要:

赋范平面上的经典曲线类型的理论并没有得到很好的发展。特别是,现有的平面曲线的曲率的概念的知识是广泛的,而不是系统化的文献。给出了一个全面的概述的几何性质和所有引入的曲率概念之间的关系,我们试图填补这一空白。当然,这为进一步的研究和整个现有框架的可能扩展奠定了基础。此外,我们得出各种新的结果,指的是在充分的广泛性各种已知的曲率类型在赋范平面。这些新的结果涉及到常曲率曲线的特征,新的特征的拉冬平面和欧几里德的子情况下,和类似的经典语句,如四顶点定理和基本定理的平面曲线。我们还介绍了一种新的曲率类型,我们验证相应的属性。作为应用的小理论发展在我们的简要文件中,我们研究的曲率行为的曲线的恒定宽度,并获得新的结果,如渐屈线,渐开线,平行曲线的概念。

英文摘要:

The theory of classical types of curves in normed planes is not strongly developed. In particular, the knowledge on existing concepts of curvatures of planar curves is widespread and not systematized in the literature. Giving a comprehensive overview on geometric properties of and relations between all introduced curvature concepts, we try to fill this gap. Certainly, this yields a basis for further research and also for possible extensions of the whole existing framework. In addition, we derive various new results referring in full broadness to the variety of known curvature types in normed planes. These new results involve characterizations of curves of constant curvature, new characterizations of Radon planes and the Euclidean subcase, and analogues to classical statements like the four vertex theorem and the fundamental theorem on planar curves. We also introduce a new curvature type, for which we verify corresponding properties. As applications of the little theory developed in our expository paper, we study the curvature behaviour of curves of constant width and obtain also new results on notions like evolutes, involutes, and parallel 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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