有限射影空间中的蛋与平移平面中的么正
Eggs in finite projective spaces and unitals in translation planes
摘要:
受卵形体和酉单位之间的联系的启发,从Buekenhout结构中产生的André/Bruck-Bose表示的平移平面的最多2个在其内核上,因为PG(4 m-1,q),m>=1的鸡蛋,是卵形体的推广,我们探讨鸡蛋和酉单位之间的关系,在其内核上的更高维度的平移平面。通过研究这种关系,我们在3^{10}阶Dickson半场平面上构造了一个么正,它在PG(20,3)中用一个锥表示,该锥的底是PG(19,3)中Penttila-Williams蛋的对偶点的集合。这个单位元不是极性的,因此,据作者所知,它似乎是这样一个平面上的一个新单位元。
英文摘要:
Inspired by the connection between ovoids and unitals arising from the Buekenhout construction in the André/Bruck-Bose representation of translation planes of dimension at most two over their kernel, and since eggs of PG(4m-1,q), m>=1, are a generalization of ovoids, we explore the relation between eggs and unitals in translation planes of higher dimension over their kernel. By investigating such a relationship, we construct a unital in the Dickson semifield plane of order 3^{10}, which is represented in PG(20,3) by a cone whose base is a set of points constructed from the dual of the Penttila-Williams egg in PG(19,3). This unital is not polar; so, up to the knowledge of the authors, it seems to be a new unital in such a plane.
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