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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク symmetry set ： ウィキペディア英語版 symmetry set In geometry, the symmetry set is a method for representing the local symmetries of a curve, and can be used as a method for representing the shape of objects by finding the topological skeleton. The medial axis, a subset of the symmetry set is a set of curves which roughly run along the middle of an object. ==The symmetry set in 2 dimensions== Let $I\; \backslash subseteq\; \backslash mathbb$ be an open interval, and $\backslash gamma\; :\; I\; \backslash to\; \backslash mathbb^2$ be a parametrisation of a smooth plane curve. The symmetry set of $\backslash gamma\; (I)\; \backslash subset\; \backslash mathbb^2$ is defined to be the closure of the set of centres of circles tangent to the curve at at least two distinct points (bitangent circles). The symmetry set will have endpoints corresponding to vertices of the curve. Such points will lie at cusp of the evolute. At such points the curve will have 4-point contact with the circle. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「symmetry set」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.