Edge weights and vertex colours

Edge weights and vertex colours
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DOI:
10.1016/j.jctb.2003.12.001
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发表时间:
2004-05-01
影响因子:
1.4
通讯作者:
Thomason, A
Thomason, A
中科院分区:
数学2区
文献类型:
--
作者:
Karonski, M;Luczak, T;Thomason, A

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是否可以为任何非平凡图的边分配 {1, 2, 3} 中的权重,以便相邻顶点具有不同的关联边权重之和?当图是 3 色时,或者当允许有限数量的实数权重时,我们给出肯定的答案。 (C) 2003 Elsevier Inc. 保留所有权利。
Can the edges of any non-trivial graph be assigned weights from {1, 2, 3} so that adjacent vertices have different sums of incident edge weights?We give a positive answer when the graph is 3-colourable, or when a finite number of real weights is allowed. (C) 2003 Elsevier Inc. All rights reserved.