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arXiv math/0611920math.MG
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Hilbert几何的时函数边界

The horofunction boundary of the Hilbert geometry

Cormac Walsh

摘要:

研究了任意有限维有界凸区域D上Hilbert几何的时函数边界。我们确定它的一组Busemann点,这是那些点的极限的“几乎测地线”。此外,我们还证明了收敛到时函数边界上的一点的任何点列在通常意义下也收敛到D的欧几里德边界上的一点。我们证明了所有的时函数都是Busemann点当且仅当D的极函数的极值集在Painleve-Kuratowski拓扑中是闭的。

英文摘要:

We investigate the horofunction boundary of the Hilbert geometry defined on an arbitrary finite-dimensional bounded convex domain D. We determine its set of Busemann points, which are those points that are the limits of `almost-geodesics'. In addition, we show that any sequence of points converging to a point in the horofunction boundary also converges in the usual sense to a point in the Euclidean boundary of D. We prove that all horofunctions are Busemann points if and only if the set of extreme sets of the polar of D is closed in the Painleve-Kuratowski topology.

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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