Universal Journal of Mathematics and Mathematical Sciences
Volumes 7, Issue 1, Pages 33 - 49
(January 2015) http://dx.doi.org/10.17654/UJMMSJan2015_033_049 |
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OUTER SUM COLORING OF A GRAPH
M. Jayalakshmi, B. Sooryanarayana and M. M. Padma
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Abstract: Let Gbe a graph. A function is called a proper outer sum coloring if whenever u, vare adjacent where The minimum span of foverall proper outer sum coloring fof Gis called outer sum chromatic number, denoted by In this paper, we have obtained outer sum chromatic number of some standard graphs like path, cycle, wheel, complete graph, bipartite graph, etc. and compared with the usual chromatic number
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Keywords and phrases: sum labeling, mod sum labeling, outer sum labeling, outer mod sum labeling. |
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