almost simple groups 1exceptional groups 1graph symmetry 1primitive group actions 1s-arc-transitive digraphs 1
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math.GR2026
Exceptional groups and the s-arc-transitivity of vertex-primitive digraphs, II
Lei Chen, Fu-Gang Yin
The paper classifies the primitive actions of almost simple groups with socle E7(q) or E8(q) on s‑arc‑transitive vertex‑primitive digraphs, completing the analysis for all exceptio…
math.GR2026
Exceptional groups and the -arc-transitivity of vertex-primitive digraphs, I
Fu-Gang Yin, Lei Chen
In this paper, we study the primitive actions of almost simple exceptional groups of Lie type on \(s\)-arc-transitive digraphs. Our motivation is the following question posed by Gi…