Let X be a connected G-locally primitive arc-transitive graph for some sub-group G of Aut(X).Suppose that X is a(G,s)-transitive graph.In this paper,we give a characterization of the vertex-stabilizer G,when X has val...
A module satisfying the descending chain condition on cyclic submodules is called coperfect.The class of coperfect modules lies properly bet ween the class of locally artinian modules and the class of semiartinian mod...
This work was supported by the National Natural Science Foundation of China (grants 11371204, 11731002).
In this paper, we present a complete classification for locally-primitive arctransitive graphs which have square-free order and valency 10. The classification involves nine graphs and three infinite families of graphs.
Let n ≠ 0, 1 be an integer and Bn be the variety of n-Bell groups defined by the law [ xn, y] [ x, yn ] ^-1= 1. Let Bn be the class of groups in which for any infinite subsets X and Y there exist x ∈ X and y ∈ Y ...
Supported by the National 973 Project (452101650122) and the National Natural Science Foundation of China (11201194, 11301393). In addition, the second author was supported by the doctoral foundation of Jiangxi Normal University.
The main purpose of this note is to show that there is a one-to-one corre- spondence between minimal non-nilpotent (resp., locally nilpotent) saturated fusion sys- tems and finite p J-core-free p-constrained minimal...
Project supported by the National Natural Science Foundation of China (Nos. 11371335, 11471055).
A group G is said to have property μ whenever N is a non-locally nitpotent normal subgroup of G, there is a finite non-nilpotent G-quotient of N. FC-groups and groups with property v satisfy property μ, where a grou...
A graph F is called G-locally-quasiprimitive if each normal subgroup of Gv acts on F(v) trivially or transitively for every vertex v. In this paper we analyse the global action and the structural information of such...
We consider groups G such that NG(H)/HCG(H) is cyclic for all H ≤ G. More specifically, we characterise locally nilpotent and supersoluble groups with this property.