基于单点移动的保可见性凸化
Visibility-preserving convexifications using single-vertex moves
摘要:
Devadoss问:(1)每个多边形都可以被凸化,这样在这个过程中不会丢失内部可见性(顶点之间)吗?此外,(2)是否存在这样一种凸化,即每次只移动一个顶点(即使用{ \em单顶点移动})?我们证明了“单顶点移动”条件的冗余性:对(1)的肯定回答意味着对(2)的肯定回答。由于Aichholzer等人最近证明了(1),这就解决了(2)。
英文摘要:
Devadoss asked: (1) can every polygon be convexified so that no internal visibility (between vertices) is lost in the process? Moreover, (2) does such a convexification exist, in which exactly one vertex is moved at a time (that is, using {\em single-vertex moves})? We prove the redundancy of the "single-vertex moves" condition: an affirmative answer to (1) implies an affirmative answer to (2). Since Aichholzer et al. recently proved (1), this settles (2).
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