Gang Chen

activity

20202022

collaborators

4 papers

math.GR2022

Notes on finite totally $2$ -closed permutation groups

Gang Chen, Qing Ren

Let $N$ be a normal subgroup of a finite group $G$ . For a faithful $N$ -set $Δ$ , applying the university embedding theorem one can construct a faithful $G$ -set $Ω$ . In this short no…

math.CO2021

Tensor products of coherent configurations

Gang Chen, Ilia Ponomarenko

A Cartesian decomposition of a coherent configuration $X$ is defined as a special set of its parabolics that form a Cartesian decomposition of the underlying set. It turns out…

math.GR2020

Schur Rings over Z \times Z_3

Gang Chen, Jiawei He

For the direct product $\cZ\times \cZ_3$ of infinite cyclic group $\cZ$ and a cyclic group $\cZ_3$ of order $3$ , the schur rings over it are classified. In particular, all the schu…

math.CO2020

A characterization of exceptional pseudocyclic association schemes by multidimensional intersection numbers

Gang Chen, Jiawei He, Ilia Ponomarenko +1

Recent classification of $\frac{3}{2}$ -transitive permutation groups leaves us with three infinite families of groups which are neither $2$ -transitive, nor Frobenius, nor one-dimen…

Notes on finite totally 2-closed permutation groups

Tensor products of coherent configurations

Schur Rings over Z \times Z_3

A characterization of exceptional pseudocyclic association schemes by multidimensional intersection numbers

Notes on finite totally $2$ -closed permutation groups