Cordial And Product Cordial Labeling Of Edge Merged And Vertex Merged n-Chain Aztec Diamond Graphs
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Keywords:
Aztec Diamond Graph, Cordial labeling, Product cordial labeling, Chain of vertex merged Aztec diamond graph, Chain of edge merged Aztec diamond graphAbstract
A binary vertex labeling function $f$ from the vertices of a graph $G$ to ${\left\{0,1\right\}}$ is called cordial labeling, if each edge xy is given the label $\left|f(x)-f(y)\right|$, the resulting number of vertices with labels $0$ and the number of vertices with labels $1$ differ to the maximum of $1$, and the number of edge labels with $0$ and the number of edge labels with $1$ also differ to the maximum of $1$. In this paper $n$-chain edge merged and vertex merged Aztec diamond graphs are proved to be cordial but not product cordial.
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