International Journal of Computer Applications |
Foundation of Computer Science (FCS), NY, USA |
Volume 183 - Number 52 |
Year of Publication: 2022 |
Authors: Abdu-Alkafi Saead Sand, Sultan Senan Mahde |
10.5120/ijca2022921938 |
Abdu-Alkafi Saead Sand, Sultan Senan Mahde . Hop Hubtic Number and Hop Hub Polynomial of Graphs. International Journal of Computer Applications. 183, 52 ( Feb 2022), 1-5. DOI=10.5120/ijca2022921938
The maximum order of partition of the vertex set V (G) into vertex hop hub sets is called hop hubtic number of G and denoted by h?(G). In this paper the hop hubtic number of some standard graphs was determined. Also bounds for h?(G) were obtained. The hop hub polynomial of a connected graph G was introduced. The hop hub polynomial of a connected graph G of order n is the polynomial Hh(G, x) = |VX(G)| i=hh(G) hh(G, i)xi, where hh(G, i) denotes the number of hop hub sets of G of cardinality i and hh(G) is the hop hub number of G. Finally, the hop hub polynomial of some special classes of graphs was studied.