Connectivity of triangulations without degree one edges under 2-3 and 3-2 moves

Connectivity of triangulations without degree one edges under 2-3 and 3-2 moves
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2-3 和 3-2 移动下无度一边的三角剖分的连通性

DOI:
10.1090/proc/13485
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发表时间:
2017
影响因子:
1
通讯作者:
Segerman, Henry
Segerman, Henry
中科院分区:
数学3区
文献类型:
--
作者:
Segerman, Henry

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马特维耶夫和皮耶加利尼分别证明,除了少数已知的例外情况,一个三元流形的任何三角剖分都可以通过一系列2-3和3-2的移动变换为同一个三元流形的任何其他三角剖分,这些三角剖分具有相同的顶点数。我们可以将其解释为表明这种三角剖分的Pachner图是连通的。在本文中,我们扩展了这个结果表明,(再次与少数已知的例外)的子图的Pachner图组成的三角形没有度1的边缘也连接的单顶点三角形的封闭流形和理想的三角形的流形与非球形的边界组件。引用
Matveev and Piergallini independently showed that, with a small number of known exceptions, any triangulation of a three-manifold can be transformed into any other triangulation of the same three-manifold with the same number of vertices via a sequence of 2-3 and 3-2 moves. We can interpret this as showing that the Pachner graph of such triangulations is connected. In this paper, we extend this result to show that (again with a small number of known exceptions) the subgraph of the Pachner graph consisting of triangulations without degree one edges is also connected for single-vertex triangulations of closed manifolds and ideal triangulations of manifolds with non-spherical boundary components. References
DOI: 10.4310/atmp.2013.v17.n5.a3
发表时间: 2013-01-01
影响因子: 1.5
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