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Proceedings of the National Academy of Sciences of the United States of America logoLink to Proceedings of the National Academy of Sciences of the United States of America
. 1990 Jun;87(12):4685–4687. doi: 10.1073/pnas.87.12.4685

Coclosure operators and chromatic polynomials.

N Ray 1, W Schmitt 1
PMCID: PMC54181  PMID: 11607087

Abstract

A theorem about closure operators on partially ordered sets is given, and applications to the counting of colorings of graphs according to partition type are derived.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

  1. Wright J. L., Hobson J. E., Wiggs B., Pare P. D., Hogg J. C. Airway inflammation and peribronchiolar attachments in the lungs of nonsmokers, current and ex-smokers. Lung. 1988;166(5):277–286. doi: 10.1007/BF02714058. [DOI] [PubMed] [Google Scholar]

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