Perfect folding of graphs

Document Type : Research and Reference

Authors

1 Department of Mathematics, Faculty of Science, Tanta University, Tanta, Egypt.

2 Department of Mathematics, Faculty of Shoubra Engineering , BanhaUniversity ,Egypt.

Abstract

In this paper we introduced the definition of perfect folding
of graphs and we proved that cycle graphs of even number of
edges can be perfectly folded while that of odd number of
edges can be perfectly folded to C3 . Also we proved that
wheel graphs of odd number of vertices can be perfectly
folded to C3. Finally we proved that if G is a graph of n vertices
such that 2 < clique number =chromatic number=k < n ,
then the graph can be perfectly folded to a clique of order k.

Keywords