The Limit Point of the Pentagram Map and Infinitesimal Monodromy

The Limit Point of the Pentagram Map and Infinitesimal Monodromy
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五角星图的极限点与无穷小单峰

DOI:
10.1093/imrn/rnaa258
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发表时间:
2020
影响因子:
1
通讯作者:
Izosimov, Anton
Izosimov, Anton
中科院分区:
数学1区
文献类型:
--
作者:
Aboud, Quinton;Izosimov, Anton

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五角星图将一个平面多边形变为一个多边形,该多边形的顶点是连续最短对角线的交点。该图下凸多边形的轨道是按指数收敛到一点的多边形序列。此外,正如 Glick 最近证明的那样,该极限点的坐标可以计算为与多边形相关的某个算子的特征向量。在本文中,我们证明了 Glick 算子可以解释为多边形的无穷小单函数。即,多边形存在某种自然的无穷小扰动,该多边形又是多边形,但通常不闭合; Glick 算子测量的是这个受扰动的多边形不闭合的程度。
The pentagram map takes a planar polygonto a polygonwhose vertices are the intersection points of the consecutive shortest diagonals of. The orbit of a convex polygon under this map is a sequence of polygons that converges exponentially to a point. Furthermore, as recently proved by Glick, coordinates of that limit point can be computed as an eigenvector of a certain operator associated with the polygon. In the present paper, we show that Glick’s operator can be interpreted as theinfinitesimal monodromyof the polygon. Namely, there exists a certain natural infinitesimal perturbation of a polygon, which is again a polygon but in general not closed; what Glick’s operator measures is the extent to which this perturbed polygon does not close up.
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DOI: 10.1215/00127094-2382228
发表时间: 2011
影响因子: 2.5
作者:
F. Soloviev
通讯作者: F. Soloviev
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DOI: --
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发表时间: 2013
期刊: arXiv: Dynamical Systems
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DOI: 10.1080/10586458.1992.10504248
发表时间: 1992
期刊: Exp. Math.
影响因子: --
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