issue 1 publication date 2020-06-01

• On relation between the Kirchhoff index and number of spanning trees of graph
• A study on some properties of leap graphs
• A note on the Roman domatic number of a digraph
• Total double Roman domination in graphs
• On the edge geodetic and edge geodetic domination numbers of a graph
• The topological ordering of covering nodes
• Characterization of signed paths and cycles admitting minus dominating function
• The 2-dimension of a Tree