Jianfu Chen

collaborators

3 papers

math.CO2026

Locally 2-homogeneous block designs

Jianfu Chen, Peice Hua, Cai Heng Li +1

This paper presents a classification of locally $2$ -homogeneous designs, extending Kantor's classification of 2-transitive symmetric designs (1985).

math.CO2026

Locally dihedral block designs and primitive groups with dihedral point stabilizers

Jianfu Chen, Yanni Wu, Binzhou Xia

Let $D$ be a block design admitting a locally transitive automorphism group $G$ . We say that $D$ is $G$ -point-locally dihedral if the induced local action $G_x^…

math.CO2024

Locally primitive block designs

Jianfu Chen, Peice Hua, Cai Heng Li +1

A locally primitive 2-design is a 2-design admitting an automorphism group $G$ with primitive local actions. It is proved that $G$ is point-primitive, and either $G$ is an almost s…