Geodesic
Product Cordial Labeling of Double wheel and Double fan Related Graphs
Kragujevac Journal of Mathematics, Tome 43 (2019) no. 1, p. 7 .

Voir la notice de l'article provenant de la source eLibrary of Mathematical Institute of the Serbian Academy of Sciences and Arts

I prove that Double wheel, path union of finite copies of Double wheel are product cordial graphs. Further I prove that the graph obtained by joining two copies of double wheel by a path of arbitrary length is product cordial graph. I also prove that $DW_{n} \oplus K_{1,n}$ and $DF_{n} \oplus K_{1,n}$ are product cordial graphs.
Classification : 05C78 05C76, 05C38
Keywords: Product cordial labeling, helm, closed helm, gear graph 
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     author = {A. H. Rokad},
     title = {Product {Cordial} {Labeling} of {Double} wheel and {Double} fan {Related} {Graphs}},
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A. H. Rokad. Product Cordial Labeling of Double wheel and Double fan Related Graphs. Kragujevac Journal of Mathematics, Tome 43 (2019) no. 1, p. 7 . http://geodesic.mathdoc.fr/item/KJM_2019_43_1_a0/