# Total Edge Irregularity Strength of q Tuple Book Graphs

*Lucia Ratnasari*,
*Sri Wahyuni*,
*Yeni Susanti* and
*Diah Junia Eksi Palupi*

*Journal of Mathematics Research*, 2021, vol. 13, issue 1, 16

**Abstract:**
Let G(V, E) be a simple, undirected, and finite graph with a vertex set V and an edge set E. An edge irregular total k-labelling is a function f from the set V \cup E to the set of non-negative integer set (1, 2, ... , k) such that any two different edges in E have distinct weights. The weight of edge xy is defined as the sum of the label of vertex x, the label of vertex y and the label of edge xy. The minimum k for which the graph G can be labelled by an edge irregular total k-labelling is called the total edge irregularity strength of G, denoted by tes(G). We have constructed the formula of an edge irregular total k-labelling and determined the total edge irregularity strength of triple book graphs, quadruplet book graphs and quintuplet book graphs. In this paper, we construct an edge irregular total of k-labelling and show the exact value of the total edge irregularity strength of q tuple book graphs.

**JEL-codes:** R00 Z0 (search for similar items in EconPapers)

**Date:** 2021

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