The Bounds of Vertex Padmakar–Ivan Index on <i>k</i>-Trees

The Padmakar&#8211;Ivan (<inline-formula> <math display="inline"> <semantics> <mrow> <mi>P</mi> <mi>I</mi> </mrow> </semantics> </math> </inline-formula>) index is a distance-based topological index and a molecular...

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Bibliographic Details
Main Authors: Shaohui Wang, Zehui Shao, Jia-Bao Liu, Bing Wei
Format: Article
Language:English
Published: MDPI AG 2019-04-01
Series:Mathematics
Subjects:
Online Access:https://www.mdpi.com/2227-7390/7/4/324