新疆大学数学与系统科学学院
纸质出版:2023
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[1]刘丙雪,刘凤霞.笛卡儿积图的2-hued列表染色[J].新疆大学学报(自然科学版)(中英文),2023,40(01):30-35.
[1]刘丙雪,刘凤霞.笛卡儿积图的2-hued列表染色[J].新疆大学学报(自然科学版)(中英文),2023,40(01):30-35. DOI: 10.13568/j.cnki.651094.651316.2022.01.22.0004.
DOI:10.13568/j.cnki.651094.651316.2022.01.22.0004.
给定图G的一个列表分配L
图G的一个(L
r)-染色
是一个正常染色c满足:每个顶点v都至少和min{d(v)
r}种不同颜色的顶点相邻
并且c(v)属于L(v).图G的r-hued列表染色数
记为χL
r(G)
是最小正整数k满足对于任意一个|L(v)|=k的列表分配L
图G有一个(L
r)-染色.最后证明了χL
2(Pm□Pn)=4
并且确定了χL
2(Pm□Cn)的范围.
For a given list assignment L of a graph G
an(L
r)-coloring of G is a proper coloring c such that for any vertex v
v is adjacent to vertices of at least min{d(v)
r} different colors with c(v) ∈ L(v). The r-hued list chromatic number of G
denoted as χL
r(G)
is the least integer k
such that for any v ∈ V(G)
and every list assignment L with |L(v)| = k
G has an(L
r)-coloring. In this paper
we prove that χL
2(Pm□Pn) = 4
and determine the range of χL
2(Pm□Cn).
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