Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4652586 | Electronic Notes in Discrete Mathematics | 2011 | 6 Pages |
Abstract
Let G be the class of all graphs and K the clique operator. The validity of the equality K(G)=K2(G) has been an open question for several years. A graph in K(G) but not in K2(G) is exhibited here.
Related Topics
Physical Sciences and Engineering
Mathematics
Discrete Mathematics and Combinatorics