| نویسندگان | سمانه حسین زاده سن سنی-اسما حمزه-سید علیرضا اشرفی قمرودی |
|---|
| تاریخ انتشار | ۲۰۱۲-۰-۰۱ |
|---|
| نوع نشریه | الکترونیکی |
|---|
| نمایه نشریه | SCOPUS |
|---|
چکیده مقاله
Let G1 = (V1, E1
) and G2 = (V2, E2
) be two graphs having a
distinguished or root vertex, labeled 0. The hierarchical product G2 ⊓ G1
of G2
and G1 is a graph with vertex set V2 × V1. Two vertices y
2
y
1
and
x
2
x
1 are adjacent if and only if y
1
x
1 ∈ E1
and y
2 = x
2; or y
2
x
2 ∈ E2
and
y
1 = x
1
= 0. In this paper, the Wiener, eccentric connectivity and Zagreb
indices of this new operation of graphs are computed. As an application,
these topological indices for a class of alkanes are computed.