Abstract

If C_n is a cycle of length n, then the graph cycle with parallel chords is obtained from C_n by adding an “edge “is the graph obtained by attaching a pendant edge at each vertex of the cycle” C_(n.) In this paper we prove that the graphs n-for n≡0,3(mod 4). the graph P_(a,b) obtained by identifying the end points of a internally disjoint paths each of length b, are odd even graceful for odd values of a and b.

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