@article {
author = {Volkmann, Lutz},
title = {Signed total Italian k-domination in graphs},
journal = {Communications in Combinatorics and Optimization},
volume = {6},
number = {2},
pages = {171-183},
year = {2021},
publisher = {Azarbaijan Shahid Madani University},
issn = {2538-2128},
eissn = {2538-2136},
doi = {10.22049/cco.2020.26919.1164},
abstract = {Let $k\ge 1$ be an integer, and let $G$ be a finite and simple graph with vertex set $V(G)$. A signed total Italian $k$-ominating function (STIkDF) on a graph $G$ is a function $f:V(G)\rightarrow\{-1,1,2\}$ satisfying the conditions that $\sum_{x\in N(v)}f(x)\ge k$ for each vertex $v\in V(G)$, where $N(v)$ is the neighborhood of $v$, and each vertex $u$ with $f(u)=-1$ is adjacent to a vertex $v$ with $f(v)=2$ or to two vertices $w$ and $z$ with $f(w)=f(z)=1$. The weight of an STIkDF $f$ is $\omega(f)=\sum_{v\in V(G)}f(v)$. The signed total Italian $k$-domination number $\gamma_{stI}^k(G)$ of $G$ is the minimum weight of an STIkDF on $G$. In this paper we initiate the study of the signed total Italian $k$-domination number of graphs, and we present different bounds on $\gamma_{stI}^k(G)$. In addition, we determine thesigned total Italian $k$-domination number of some classes of graphs. Some of our results are extensions of well-known properties of the signed total Roman $k$-domination number $\gamma_{stR}^k(G)$, introduced and investigated by Volkmann [9,12].},
keywords = {Signed total Italian k-dominating function,Signed total Italian k-domination number,Signed total Roman k-dominating function,Signed total Roman k-domination number},
url = {http://comb-opt.azaruniv.ac.ir/article_14112.html},
eprint = {http://comb-opt.azaruniv.ac.ir/article_14112_c58a0b3d2443dd19b119a3177bde3a4c.pdf}
}