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題名: | On k-shifted antimagic spider forests |
作者: | Fei-Huang Chang, Wei-Tian Li, Daphne Der-Fen Liu, Zhishi Pan |
關鍵詞: | Antimagic labeling;k-shifted antimagic labeling;Spider forest |
日期: | 2024-08-24 |
上傳時間: | 2024-09-20 12:06:44 (UTC+8) |
摘要: | Let G(V,E) be a simple graph with m edges. For a given integer k, a k-shifted antimagic labeling is a bijection f:E(G)→{k+1,k+2,…,k+m} such that all vertices have different vertex-sums, where the vertex-sum of a vertex v is the total of the labels assigned to the edges incident to v. A graph G is {\it k-shifted antimagic} if it admits a k-shifted antimagic labeling. For the special case when k=0, a 0-shifted antimagic labeling is known as {\it antimagic labeling}; and G is {\it antimagic} if it admits an antimagic labeling. A spider is a tree with exactly one vertex of degree greater than two. A spider forest is a graph where each component is a spider. In this article, we prove that certain spider forests are k-shifted antimagic for all k≥0. In addition, we show that for a spider forest G with m edges, there exists a positive integer k0<m such that G is k-shifted antimagic for all k≥k0 and k≤−(m+k0+1). |
關聯: | Discrete Applied Mathematics 358, p. 468-476 |
DOI: | 10.1016/j.dam.2024.07.036 |
顯示於類別: | [應用數學與數據科學學系] 期刊論文
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