The concept of vertex coloring pose a number of challenging open
problems in graph theory. Among several interesting parameters, the
coloring parameter, namely the pseudoachromatic number of a graph
stands a class apart. Although not studied very widely like other parameters
in the graph coloring literature, it has started gaining prominence
in recent years. The pseudoachromatic number of a simple graph
G, denoted ψ(G), is the maximum number of colors used in a vertex
coloring of G, where the adjacent vertices may or may not receive the
same color but any two distinct pair of colors are represented by at least
one edge in it. In this paper we have computed this parameter for a
number of classes of graphs
The concept of vertex coloring pose a number of challenging openproblems in graph theory. Among several interesting parameters, thecoloring parameter, namely the pseudoachromatic number of a graphstands a class apart. Although not studied very widely like other parametersin the graph coloring literature, it has started gaining prominencein recent years. The pseudoachromatic number of a simple graphG, denoted ψ(G), is the maximum number of colors used in a vertexcoloring of G, where the adjacent vertices may or may not receive thesame color but any two distinct pair of colors are represented by at leastone edge in it. In this paper we have computed this parameter for anumber of classes of graphs
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