IJPAM: Volume 95, No. 3 (2014)

RADIO LABELINGS FOR CORONA PRODUCT OF
$P_{2}\bigodot W_{n}$, $n\geq 6$

Saima Nazeer$^1$, Imrana Kousar$^2$
$^{1,2}$Lahore College For Women University
Lahore, PAKISTAN


Abstract. For a connected graph $G$, let $d(x,y)$ denotes the distance between two distinct vertices $x$, $y$ in $G$ and diam$(G)$ be the diameter of $G$. A radio labeling (or multi-level distance labeling) of a graph $G$ is a function $f$ that assigns positive integers to the vertices of $G$ satisfying $\vert f(x)-f(y)\vert\geq \text{diam}(G)+1-d(x,y)$. The largest integer in the range of the labeling is its span. The radio number is the minimum possible span taken over all radio labelings of $G$, denoted by rn$(G)$.

In this paper we show that $\text{rn}(P_{2}\bigodot W_{n})=2n+5$, $n\geq 6$.

Received: January 1, 2014

AMS Subject Classification: 05C12, 05C15, 05C78

Key Words and Phrases: graph labeling, radio number, corona product of graphs

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DOI: 10.12732/ijpam.v95i3.2 How to cite this paper?

Source: International Journal of Pure and Applied Mathematics
ISSN printed version: 1311-8080
ISSN on-line version: 1314-3395
Year: 2014
Volume: 95
Issue: 3
Pages: 339 -


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