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The domination number of the k-token graph of the complete bipartite graph Km,n
Abstract
This paper is about token graphs and domination number. Let G=(X,E) denote an undirected graph that is connected, with no loops or multiple edges, vertex set X, and edge set E. Pick a positive integer k≤ | X|. The k-token graph of G, denoted by Fk(G), is defined as follows. The vertex set 𝒳 consists of all k-subsets of X. Two vertices x,y∈ 𝒳 are adjacent whenever the symmetric difference of x and y consists of two vertices that form an edge in E. In this paper, we compute the exact value for the domination number of F2(Km,n) where Km,n is the complete bipartite graph with parameters m,n. We present some bounds for the domination number of Fk(Km,n) when k≥ 3.
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BibTeX
@misc{chinman2026domination,
title = {{The domination number of the $k$-token graph of the complete bipartite graph $K_m,n$}},
author = {Nathaniel Chinman and Antonio Cortijo and Beatrice Pedroni and Ian Seong and Lucy Stenger},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.28936},
eprint = {2610.28936},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.28936},
}
RIS
TY - UNPB
TI - The domination number of the k-token graph of the complete bipartite graph K_m,n
AU - Nathaniel Chinman
AU - Antonio Cortijo
AU - Beatrice Pedroni
AU - Ian Seong
AU - Lucy Stenger
PY - 2026
DA - 2026/10/20
PB - arXiv
DO - 10.48550/arxiv.2610.28936
UR - https://arxiv.org/abs/2610.28936
AB - This paper is about token graphs and domination number. Let G=(X,E) denote an undirected graph that is connected, with no loops or multiple edges, vertex set X, and edge set E. Pick a positive integer k≤ | X|. The k-token graph of G, denoted by F_k(G), is defined as follows. The vertex set 𝒳 consists of all k-subsets of X. Two vertices x,y∈ 𝒳 are adjacent whenever the symmetric difference of x and y consists of two vertices that form an edge in E. In this paper, we compute the exact value for the domination number of F_2(K_m,n) where K_m,n is the complete bipartite graph with parameters m,n. We present some bounds for the domination number of F_k(K_m,n) when k≥ 3.
ER -