Nonnegative signed total Roman domination in graphs

Let $G$ be a finite and simple graph with vertex set $V(G)$. A nonnegative signed total Roman dominating function (NNSTRDF) on a graph $G$ is a function $f:V(G)\rightarrow\{-1, 1, 2\}$ satisfying the conditions that (i) $\sum_{x\in N(v)}f(x)\ge 0$ for each $v\in V(G)$, where $N(v)$ is the open n...

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Bibliographic Details
Main Authors: Nasrin Dehgardi, Lutz Volkmann
Format: Article
Language:English
Published: Azarbaijan Shahide Madani University 2020-12-01
Series:Communications in Combinatorics and Optimization
Subjects: