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|Title:||On planar and non-planar graphs having no chromatic zeros in the interval (1, 2)|
|Citation:||Dong, F.M., Koh, K.M. (2008-09-06). On planar and non-planar graphs having no chromatic zeros in the interval (1, 2). Discrete Mathematics 308 (17) : 3897-3905. ScholarBank@NUS Repository. https://doi.org/10.1016/j.disc.2007.07.093|
|Abstract:||We exhibit a family of 2-connected graphs which is closed under certain operations, and show that each graph in the family has no chromatic zeros in the interval (1,2). The family contains not only collections of graphs having no certain minors, but also collections of plane graphs, including near-triangulations found by Birkhoff and Lewis [Chromatic polynomials, Trans. Amer. Math. Soc. 60 (1946) 355-451]. © 2007 Elsevier B.V. All rights reserved.|
|Source Title:||Discrete Mathematics|
|Appears in Collections:||Staff Publications|
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