Some Results on Induced Subgraphs of Johnson Graphs

ISBN-13: 9783659400278 / Angielski / Miękka / 2018 / 68 str.

Akbar Ali; Muhammad Aslam Malik

Opis

Induced subgraphs of Johnson graphs (JIS for short) were studied first time in 2010 by R. Naimi and Jaffrey Shaw. They gave some necessary conditions and some sufficient conditions for a graph to be JIS. We have obtained some results which help to decide whether a given graph is JIS or not and have been able to find some new sufficient conditions for a graph to be JIS. We, also classified all graphs of order less than 6 or size less than 7 into JIS and non-JIS category. Furthermore, we give some special JIS graphs as well as non-JIS graphs. Ramin Naimi and Jaffrey Shaw proposed a conjecture " The graph Deltap is JIS if and only if p is odd ". We have attacked this conjecture and have been able to prove that If p is odd then Deltap is JIS.

O autorze

Ali, Akbar
Akbar Ali completed his M.Phil degree from University of the Punjab, Lahore-Pakistan in 2011. His research interest include Graph Theory and Mathematical Chemistry.