It is shown that the Clar number can be arbitrarily larger than the cardinality of a maximal alternating set. In particular, a maximal alternating set of a hexagonal system need not contain a maximum cardinality resonant set, thus disproving a previously stated conjecture. It is known that maximum cardinality resonant sets and maximal alternating sets are… (More)

@article{Klavzar2010MaximumCR,
title={Maximum cardinality resonant sets and maximal alternating sets of hexagonal systems},
author={Sandi Klavzar and Khaled Salem and Andrej Taranenko},
journal={Computers & Mathematics with Applications},
year={2010},
volume={59},
pages={506-513}
}