H. Golmohammadi

collaborators

3 papers

math.CO2026

Total outer-independent coalition in graphs

Olga Buntina, Hamidreza Golmohammadi, J. C. Valenzuela-Tripodoro

A set $D$ of vertices graph $G$ is a total outer-independent dominating set (TOIDS) of $G$ if every vertex of $G$ is adjacent to at least one vertex in $D$ , and $V (G) ∖ D$ i…

math.CO2025

On restrained coalitions in graphs: bounds and exact values

Andrey A. Dobrynin, Aleksey N. Glebov, H. Golmohammadi

A subset $D \subseteq V$ is a dominating set of a graph $G$ with vertex set $V$ if every vertex $v \in V ∖ D$ is adjacent to a vertex in $D$ . Two subsets of $V$ form a coal…

math.CO2025

Total restrained coalitions in graphs

M. Chellali, J. C. Valenzuela-Tripodoro, H. Golmohammadi +2

A set $S \subseteq V$ in an isolate-free graph $G$ is a total restrained dominating set, abbreviated TRD-set, if every vertex in $V$ is adjacent to a vertex in $S$ , and every vertex…