On edge Co-PI indices

محورهای موضوعی : مجله بین المللی ریاضیات صنعتی

A. 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.

تاریخ دریافت : 1392/08/23 تاریخ پذیرش : 1392/08/23 تاریخ انتشار : 1392/10/11

کلید واژه: Vertex-PI index- Edge-PI indic, Molecular graph, Vertex Co-PI indices,

چکیده مقاله :

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.