5 citations · 22 across the 15 of their papers we have counts for
27 papers
On Certain Topological Indices of Signed Graphs
Sudev Naduvath, Johan Kok
The first Zagreb index of a graph is the sum of squares of the vertex degrees in a graph and the second Zagreb index of is the sum of products of degrees of adjacent vertic…
On Derivative Euler Phi Function Set-Graphs
Johan Kok, Eunice Gogo Mphako-Banda, Sudev Naduvath
In this paper, we study some graph theoretical properties of two derivative Euler Phi function set-graphs. For the Euler Phi function , , the set $S_ϕ(n) =\{…
Stability in Respect of Chromatic Completion of Graphs
Eunice Mphako-Banda, Johan Kok
In an improper colouring an edge for which, is called a \emph{bad edge}. The notion of the \emph{chromatic completion number} of a graph denoted by is…
Chromatic Completion Number
E. G Mphako-Banda, J. Kok
We use a well known concept of proper vertex colouring of a graph to introduce the construction of a chromatic completion graph and its related parameter, the chromatic completion…
On -Colouring of Chithra Graphs
Johan Kok, Sudev Naduvath
The family of Chithra graphs is a wide ranging family of graphs which includes any graph of size at least one. Chithra graphs serve as a graph theoretical model for genetic enginee…
-Colouring of Cycle Related Graphs
Johan Kok, Sudev Naduvath
With respect to a proper colouring of a graph , we know that . If distinct colours represent distinct technology types to be located at vertices the…