论文标题

Moufang集由单元中的翻译产生

Moufang sets generated by translations in unitals

论文作者

Grundhöfer, Theo, Stroppel, Markus J., Van Maldeghem, Hendrik

论文摘要

我们考虑订单$ Q $的单一单位,其中有两个点,这些点是订单$ Q $的翻译组的中心。这些翻译产生的组$ g $引起了加入两个点的块上设置的moufang。我们表明,$ g $是$ \ operatoTorname {sl}(2,\ mathbb {f} _q)$(如所有经典单位词,在某些非古典示例中一样),或$ \ operatoratorname {psl}(2,2,2,2,\ mathbb {f} _q)_q)$或suzuki组组或suzuki组。此外,$ g $在特殊区块之外是半规则的。

We consider unitals of order $q$ with two points which are centers of translation groups of order $q$. The group $G$ generated by these translations induces a Moufang set on the block joining the two points. We show that $G$ is either $\operatorname{SL}(2,\mathbb{F}_q)$ (as in all classical unitals and also in some non-classical examples), or $\operatorname{PSL}(2,\mathbb{F}_q)$, or a Suzuki or a Ree group. Moreover, $G$ is semi-regular outside the special block.

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