• P-ISSN 0974-6846 E-ISSN 0974-5645

Indian Journal of Science and Technology


Indian Journal of Science and Technology

Year: 2023, Volume: 16, Issue: 26, Pages: 2008-2015

Original Article

Vertex k-Prime Labeling of Theta Graphs

Received Date:26 May 2023, Accepted Date:18 June 2023, Published Date:11 July 2023


Objectives: To analyse some theta related graphs that admit vertex k-prime labeling for each positive integer k. Methods: In this study, vertices of the graphs are assigned with k, k+1,…,k+|V|-1 such that each pair of labels of adjacent vertices are relatively prime. Justifications for the proof are given. Findings: We examine the theta related graphs such as generalised theta graphs, uniform theta graphs, centralised uniform theta graphs for m = 1 are vertex k-prime. In addition, we introduce another structure of theta graph known as centralised generalised theta graph and show that vertex k-prime labeling exists for the graph. Novelty: Vertex k-prime labeling is a new variant of prime labeling and theta families of graphs exhibiting the labeling is a new finding. Another structure of theta graph known as centralised generalised theta graph is introduced and proved that vertex k-prime labeling exists for the graph.

Keywords: Vertex k-Prime Labeling; Generalised Theta Graphs; Uniform Theta Graphs; Centralised Uniform Theta Graphs; Centralised Generalised Theta Graph


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© 2023 Arockiamary & Vijayalakshmi. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Published By Indian Society for Education and Environment (iSee)


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