S. Hajjar

collaborators

3 papers

math.CO2026

On (1,1,2,3)- and (1,1,3,3,3)-Packing Colorings of Claw-Free Subcubic Graphs

Maidoun Mortada, Ayman El Zein, Sara Al Hajjar

For a non-decreasing sequence $S = (a_{1}, a_{2}, \dots, a_{r})$ of positive integers, an $S$ -packing coloring of a graph $G$ is a partition of $V (G)$ into sets $A_{1}, \dots, A_{r}$ such that an…

math.CO2026

List Coloring of the Square of 4-Irregular Graphs

Sara Al Hajjar

The square of a graph $G$ is the graph obtained from $G$ after adding an edge between any two vertices of distance $2$ . A $k$ -irregular graph is a graph with maximum degree $k$ suc…

math.CO2026

2-Distance Coloring of Planar Graphs with Specific Maximum Degree

Sara Al Hajjar

A k-distance r-coloring of a graph is a coloring of the vertices of the graph such that if the distance between 2 vertices x and y is less or equal to k, then x and y must have dis…