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arXiv 2302.09768math.COmath.GR
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具有$k>λ(λ-2)$的标志传递对称设计的约化

Reduction for flag-transitive symmetric designs with $k>λ(λ-2)$

Jianfu Chen, Jiaxin Shen, Shenglin Zhou

摘要:

设$G$是具有$k>λ(λ-2)$的$(v,k,λ)$对称设计$\mathcal{D}$的标志传递自同构群. O 'Reilly Regulatory证明了如果$G$是点非本原的,则$\mathcal{D}$有参数$(v,k,λ)=(λ^2(λ+2),λ(λ+1),λ)$。在本文中,我们考虑的情况下,$G$是点本原。利用O 'Nan-Scott定理,证明了$G$必为仿射型或几乎单型.

英文摘要:

Let $G$ be a flag-transitive automorphism group of a $(v,k,λ)$ symmetric design $\mathcal{D}$ with $k>λ(λ-2)$. O'Reilly Regueiro proved that if $G$ is point-imprimitive, then $\mathcal{D}$ has parameters $(v,k,λ)=(λ^2(λ+2),λ(λ+1),λ)$. In the present paper, we consider the case that $G$ is point-primitive. By applying the O'Nan-Scott Theorem, we prove that $G$ must be of affine type or almost simple type.

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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