## ON HUBTIC AND RESTRAINED HUBTIC OF A GRAPH

*S. I. Khalaf, V. Mathad*

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## Abstract

In this article, the hubtic number of the join and corona of two connected graphs is computed. The restrained hubtic number r(G) of a graph G is the maximum number such that we can partition V (G) into pairwise disjoint restrained hub sets. We compute the restrained hubtic number of some standard graphs. Some bounds for r(G) are obtained.

## Keywords

Hub number, Hubtic number, Restrained hubtic number.