نتایج جستجو برای: flag transitive

تعداد نتایج: 14886  

Journal: :Journal of Combinatorial Designs 2021

2015
Aart Blokhuis Robert S. Coulter Marie Henderson Eimear Byrne Nadya Markin Neil J. Calkin Shuhong Gao Justine C. Hyde-Volpe

A trace conjecture and flag-transitive affine planes,

Journal: :Proceedings of the American Mathematical Society 1964

Journal: :Journal of Algebraic Combinatorics 2015

Journal: :Proceedings of the American Mathematical Society 1973

Journal: :European Journal of Combinatorics 1987

Let $G$ be an automorphism group of a‎ ‎$2$-$(v,k,4)$ symmetric design $mathcal D$‎. ‎In this paper‎, ‎we‎ ‎prove that if $G$ is flag-transitive point-primitive‎, ‎then the‎ ‎socle of $G$ cannot be an exceptional group of Lie type‎.

The main aim of this article is to study (v,k,λ)-symmetric designs admitting a flag-transitive and point-primitive automorphism group G whose socle is PSL(3,q). We indeed show that the only possible design satisfying these conditions is a Desarguesian projective plane PG(2,q) and G > PSL(3,q).

2007
Michael Huber

As a consequence of the classification of the finite simple groups, it has been possible in recent years to characterize Steiner t-designs, that is t-(v, k,1) designs, mainly for t = 2, admitting groups of automorphisms with sufficiently strong symmetry properties. However, despite the finite simple group classification, for Steiner t-designs with t > 2 most of these characterizations have rema...

2003
Ronald D. Baker C. Culbert Gary L. Ebert Keith E. Mellinger

With the exception of Hering’s plane of order 27, all known odd order flag-transitive a‰ne planes are one of two types: admitting a cyclic transitive action on the line at infinity, or admitting a transitive action on the line at infinity with two equal-sized cyclic orbits. In this paper we show that when the dimension over the kernel for these planes is three, then the known examples are the o...

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