Gracefulness of Two Kinds of Unconnected Graphs with Even Vertices
Xiaoyan Wen, Tao Wang, Lili SUI · Wuhan University Journal of Natural Sciences · 2022
Two kinds of unconnected double fan graphs with even vertices,[see formula in PDF] and [see formula in PDF] [see formula in PDF] were presented. For natural number [see formula in PDF],[see formula in PDF],the two graphs are all graceful graphs, where [see formula in PDF] are even-vertices path,[see formula in PDF] is odd-vertices path,[see formula in PDF] are the complement of graph [see formula in PDF],[see formula in PDF] is the join graph of [see formula in PDF] and [see formula in PDF].