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*1 Department of Mathematics, Government Polytechnic College, Attingal, Kerala, India 2 Department of Mathematics, T K M College of Engineering, Kollam, Kerala, India Abstract: Mean sum square prime labeling of a graph is the labeling of the vertices with {0,1,2---,p-1} and the edges with mean of the square of the sum of the labels of the incident vertices or mean of the square of the sum of the labels of the incident vertices and one, depending on the sum is even or odd. The greatest common incidence number of a vertex (gcin) of degree greater than one is defined as the greatest common divisor of the labels of the incident edges. If the gcin of each vertex of degree greater than one is one, then the graph admits mean sum square prime labeling. Here we identify some cycle related graphs for mean sum square prime labeling.

MEAN SUM SQUARE PRIME LABELING OF SOME CYCLE RELATED GRAPHS