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arXiv 1405.5233math.MGmath.COmath.NT
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大多数Reinhardt多边形是零星的

Most Reinhardt polygons are sporadic

Kevin G. Hare, Michael J. Mossinghoff

摘要:

\textit{Reinhardt polygon}是凸$n$ -边形,对于不是$2$的幂的$n$,其在三个不同的几何优化问题中是最优的,例如,其具有相对于其直径的最大周长。一些这样的多边形表现出特定的周期性结构;其他的被称为\textit{sporadic}。先前的工作已经完整地描述了周期性情况,并表明对于所有形式为$n=pqr$的$n$,都出现零星的Reinhardt多边形,其中$p$和$q$是不同的奇素数,而$r\geq2$。我们发现,(二面角等价类)零星莱因哈特多边形的数量超过了几乎所有的$n$的周期,并发现这首先发生在$n=105$。当$n=2pq$具有$p$和$q$不同的奇素数时,我们还确定了稀疏Reinhardt多边形个数的一个公式.

英文摘要:

A \textit{Reinhardt polygon} is a convex $n$-gon that, for $n$ not a power of $2$, is optimal in three different geometric optimization problems, for example, it has maximal perimeter relative to its diameter. Some such polygons exhibit a particular periodic structure; others are termed \textit{sporadic}. Prior work has described the periodic case completely, and has shown that sporadic Reinhardt polygons occur for all $n$ of the form $n=pqr$ with $p$ and $q$ distinct odd primes and $r\geq2$. We show that (dihedral equivalence classes of) sporadic Reinhardt polygons outnumber the periodic ones for almost all $n$, and find that this first occurs at $n=105$. We also determine a formula for the number of sporadic Reinhardt polygons when $n=2pq$ with $p$ and $q$ distinct odd primes.

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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