THE CHROMATIC UNIQUENESS OF A FAMILY OF 6-BRIDGE GRAPHS
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作者:
Khalaf, A. M.
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机构:
Univ Putra Malaysia, Fac Sci, Dept Math, Serdang 43400, Malaysia
Univ Kufa, Coll Math & Comp Sci, Dept Math, Najaf, IraqUniv Putra Malaysia, Fac Sci, Dept Math, Serdang 43400, Malaysia
Khalaf, A. M.
[1
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Peng, Y. H.
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Univ Putra Malaysia, Fac Sci, Dept Math, Serdang 43400, MalaysiaUniv Putra Malaysia, Fac Sci, Dept Math, Serdang 43400, Malaysia
Peng, Y. H.
[1
]
机构:
[1] Univ Putra Malaysia, Fac Sci, Dept Math, Serdang 43400, Malaysia
Let P(G, gimel) denote the chromatic polynomial of a graph G. Two graphs G and H are chromatically equivalent, written G similar to H, if P(G, gimel) = P(H, gimel). A graph G is chromatically unique, written x-unique, if for any graph H, G similar to H implies that G is isomorphic with H. In this paper we prove the chromatic uniqueness of a new family of 6-bridge graphs.