On edge Co-PI indices
Subject Areas : International Journal of Industrial MathematicsA. Arjomandfar 1 , O. Khormali 2
1 - Islamic Azad University, Shahr-e Rey Branch, Tehran,
Iran.
2 - Mathematics and Informatics Research Group,
ACECR, Tarbiat Modares University, B.O. Box: 14115-
343, Tehran, Iran.
Keywords: Vertex-PI index- Edge-PI indic, Molecular graph, Vertex Co-PI indices,
Abstract :
In this paper, at first we mention to some results related to PI and vertex Co-PI indices and then we introduce the edge versions of Co-PI indices. Then, we obtain some properties about these new indices.