Jing-zhi Chang

collaborators

2 papers

math.CO2022

An extension on neighbor sum distinguishing total coloring of graphs

Jing-zhi Chang, Chao Yang, Zhi-xiang Yin +1

Let $f : V (G) \cup E (G) \to {1, 2, \dots, k}$ be a non-proper total $k$ -coloring of $G$ . Define a weight function on total coloring as $$ϕ(x)=f(x)+\sum\limits_{e\ni x}f(e)+\sum…

math.CO2021

A note on 1-2-3 and 1-2 Conjectures for 3-regular graphs

Jing-zhi Chang, Chao Yang, Zhi-xiang Yin +1

The 1-2-3 Conjecture, posed by Karoński, Łuczak and Thomason, asked whether every connected graph $G$ different from $K_{2}$ can be 3-edge-weighted so that every two adjacent vertice…