Path Union and Double Path Union of Cordialgraphs

 International Journal of Mathematics Trends and Technology (IJMTT) © 2018 by IJMTT Journal Volume-55 Number-5 Year of Publication : 2018 Authors : Mukund V.Bapat 10.14445/22315373/IJMTT-V55P542

Mukund V.Bapat "Path Union and Double Path Union of Cordialgraphs", International Journal of Mathematics Trends and Technology (IJMTT). V55(5):322-330 March 2018. ISSN:2231-5373. www.ijmttjournal.org. Published by Seventh Sense Research Group.

Abstract
In this paper we show path union families of kite and flag of S4 ( also called as dart) are cordial graphs. Pm(flag-S4) has 8 different structures and all are cordial.We also show double path union of graph G i.e.Pm(2-G) are cordial for G =C4,flag of C3,flag of C4 .In allcases we consider all possible structures and establish invariance under cordiality.

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Keywords
path union, cordial,graph,double path,flag, kite,invariance.