B. Samadi

activity

20162024

collaborators

Showing 2018Show all

3 papers · 1 filter

math.CO2018

On three outer-independent domination related parameters in graphs

Doost Ali Mojdeh, Iztok Peterin, Babak Samadi +1

Let $G$ be a graph and let $S \subseteq V (G)$ . The set $S$ is a double outer-independent dominating set of $G$ if $∣ N [v] \cap D ∣ \geq 2$ , for all $v \in V (G)$ , and $V (G) ∖ S$ is…

math.CO2018

Bounds on the nonnegative signed domination number of graphs

Doost Ali Mojdeh, Babak Samadi, Lutz Volkmann

The aim of this work is to investigate the nonnegative signed domination number $γ_{s}^{N N}$ with emphasis on regular, ( $r + 1$ )-clique-free graphs and trees. We give lower and upper b…

math.CO2018

Some notes on the signed bad number in bipartite graphs

Doost Ali Mojdeh, Babak Samadi

In this paper, we deal with the signed bad number and the negative decision number of graphs. We show that two upper bounds concerning these two parameters for bipartite graphs in…