activity
20062023
most citedA Note on (3,1)-Choosable Toroidal Graphs

4 citations · 6 across the 10 of their papers we have counts for

collaborators

10 papers

math.CO2023

Coloring_of_some_crown-free_graphs

Di Wu, Baogang Xu

Let and be two vertex disjoint graphs. The {\em union} is the graph with and . The {\em join} is the gra…

math.CO2023

Structure and coloring of a family of ()-free graphs

Ran Chen, Baogang Xu

Let and be a path and a cycle on vertices, respectively. In 2021, Choudum {\em et al.} [Disc. Math. 344 (2021) 112244] determined the structures of ,…

math.CO2023

Perfect divisibility and coloring of some fork-free graphs

Di Wu, Baogang Xu

A is an induced cycle of length at least four, and an odd hole is a hole of odd length. A {\em fork} is a graph obtained from by subdividing an edge once. An {\em…

math.CO2022★ 2 cited

The chromatic number of heptagraphs

Wu Di, Baogang Xu, Yian Xu

A hole is an induced cycle of length at least 4. A graph is called a pentagraph if it has no cycles of length 3 or 4 and has no holes of odd length at least 7, and is called a hept…

math.CO2022

On coloring of graphs of girth 2l + 1 without longer odd holes

Di Wu, Baogang Xu, Yian Xu

A hole is an induced cycle of length at least 4. Let be a positive integer, let denote the family of graphs which have girth and have no holes of odd l…

math.CO2022

On the chromatic number of some -free graphs

Wei Dong, Baogang Xu, Yian Xu

Let be a graph. We say that is perfectly divisible if for each induced subgraph of , can be partitioned into and such that is perfect and $ω(H[…