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math.CO2026
Regular, and (bi-)rotary Hall Cayley maps
Wendi Di, Zheng Guo, Cai Heng Li
A classification is given of regular, rotary, and birotary Cayley maps of which the vertex number is coprime to the valency. The classification is involved in constructions of new…
math.CO2026
On the multipliers of a Singer quadrangle
Wendi Di, Tao Feng
A finite generalized quadrangle $\cS$ is a Singer quadrangle if it has an automorphism group that acts sharply transitively on its points. In this paper, we introduce the notion of…