2 papers
math.CO2022
Girth of the algebraic bipartite graph
Ming Xu, Xiaoyan Cheng, Yuansheng Tang
For integer and prime power , the algebraic bipartite graph proposed by Lazebnik and Ustimenko (1995) is meaningful not only in extremal graph theory but also…
math.GM2017
The properties of bordered matrix of symmetric block design
Mingchun Xu
An incidence structure consists simply of a set P of points and a set B of blocks, with a relation of incidence between points and blocks.A symmetric (v,k,λ) block design is the su…