Geodesic
Graphs with chromatic roots in the interval \((1,2)\)
The electronic journal of combinatorics, Tome 14 (2007)

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We present an infinite family of 3-connected non-bipartite graphs with chromatic roots in the interval $(1,2)$ thus resolving a conjecture of Jackson's in the negative. In addition, we briefly consider other graph classes that are conjectured to have no chromatic roots in $(1,2)$.
DOI : 10.37236/1019
Classification : 05C15
Mots-clés : chromatic roots, non bipartite graphs 
Gordon F. Royle. Graphs with chromatic roots in the interval \((1,2)\). The electronic journal of combinatorics, Tome 14 (2007). doi: 10.37236/1019
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     author = {Gordon F. Royle},
     title = {Graphs with chromatic roots in the interval \((1,2)\)},
     journal = {The electronic journal of combinatorics},
     year = {2007},
     volume = {14},
     doi = {10.37236/1019},
     zbl = {1157.05310},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1019/}
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