# Locating Hop Sets in a Graph

## Authors

• Ethel Mae Pagcu Mindanao State University-Iligan Institute of Technology
• Gina Malacas Minadanao State University-Iligan Institute of Technology
• Sergio Canoy, Jr. Mindanao State University-Iligan Institute of Technology

## Keywords:

Locating hop set, Strictly locating hop set, Join, Corona

## Abstract

Let G be a connected graph with vertex set V (G) and edge set E(G). The open hop neighborhood of vertex v ∈ V (G) is the set NG(v, 2) = {w ∈ V (G) : dG(v, w) = 2}, where dG(v, w) denotes the distance between v and w. A non-empty set S ⊆ V (G) is a locating hop set of G if NG(u, 2) ∩ S ̸= NG(v, 2) ∩ S for every pair of distinct vertices u, v ∈ V (G) \ S. The smallest cardinality of a locating hop set of G, denoted by lhn(G) is called the locating hop number of G. This study focuses mainly on the concept of locating hop set in graphs. Characterizations of locating hop sets in the join and corona of two graphs are given and bounds for the corresponding locating hop numbers of these graphs are determined.

2022-10-31

## Section

Nonlinear Analysis

## How to Cite

Locating Hop Sets in a Graph. (2022). European Journal of Pure and Applied Mathematics, 15(4), 1705-1715. https://doi.org/10.29020/nybg.ejpam.v15i4.4500