Recall that the minimum number of colors that allow a proper coloring of
graph G is called the chromatic number of G and denoted by χ(G). In
this paper the concepts of χ'-chromatic sum and χ+-chromatic sum are
introduced. The extended graph Gx of a graph G was recently introduced for
certain regular graphs. We further the concepts of χ'-chromatic sum and
χ+-chromatic sum to extended paths and cycles. The paper concludes with
\emph{patterned structured} graphs.Comment: 12 page