A note on independent sets in graphs with large minimum degree and small cliques
The electronic journal of combinatorics, Tome 21 (2014) no. 2
Graphs with large minimum degree containing no copy of a clique on $r$ vertices ($K_r$) must contain relatively large independent sets. A classical result of Andrásfai, Erdős, and Sós implies that $K_r$-free graphs $G$ with degree larger than $((3r-7)/(3r-4))|V(G)|$ must be $(r-1)$-partite. An obvious consequence of this result is that the same degree threshold implies an independent set of order $(1/(r-1))|V(G)|$. The following paper provides improved bounds on the minimum degree which would imply the same conclusion. This problem was first considered by Brandt, and we provide improvements over these initial results for $r > 5$.
DOI :
10.37236/3881
Classification :
05C69, 05C07, 05C42, 05C35
Mots-clés : dense graphs, independent sets
Mots-clés : dense graphs, independent sets
Affiliations des auteurs :
Jeremy Lyle  1
@article{10_37236_3881,
author = {Jeremy Lyle},
title = {A note on independent sets in graphs with large minimum degree and small cliques},
journal = {The electronic journal of combinatorics},
year = {2014},
volume = {21},
number = {2},
doi = {10.37236/3881},
zbl = {1300.05232},
url = {http://geodesic.mathdoc.fr/articles/10.37236/3881/}
}
Jeremy Lyle. A note on independent sets in graphs with large minimum degree and small cliques. The electronic journal of combinatorics, Tome 21 (2014) no. 2. doi: 10.37236/3881
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