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Total double Roman domination numbers in digraphs
Discrete Mathematics, Algorithms and Applications, 2021Let [Formula: see text] be a finite and simple digraph with vertex set [Formula: see text]. A double Roman dominating function (DRDF) on digraph [Formula: see text] is a function [Formula: see text] such that every vertex with label 0 has an in-neighbor with label 3 or two in-neighbors with label 2 and every vertex with label 1 have at least one in ...
Amjadi, J., Pourhosseini, F.
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Twin signed total Roman domination numbers in digraphs
Asian-European Journal of Mathematics, 2018Let [Formula: see text] be a finite simple digraph with vertex set [Formula: see text] and arc set [Formula: see text]. A twin signed total Roman dominating function (TSTRDF) on the digraph [Formula: see text] is a function [Formula: see text] satisfying the conditions that (i) [Formula: see text] and [Formula: see text] for each [Formula: see text ...
Amjadi, J., Soroudi, M.
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Signed total Roman domination and domatic numbers in graphs
Applied Mathematics and ComputationYubao Guo, Lutz Volkmann, Yun Wang
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Bounds on the quasi-total double Roman domination number in graphs
J. Amjadi +4 more
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