The star arboricity of graphs

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Abstract

A star forest is a forest whose connected components are stars. The star arboricity st(G) of a graph G is the minimum number of star forests whose union covers all edges of G. We show that for every d-regular graph G, 1 2d<st(G)≤ 1 2d + O(d 2 3(logd) 1 3, and that there are d-regular graphs G with st(G)> 1 2d + omega;(logd). We also observe that the star arboricity of any planar graph is at most 6 and that there are planar graphs whose star arboricity is at least 5. © 1989.

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APA

Algor, I., & Alon, N. (1989). The star arboricity of graphs. Discrete Mathematics, 75(1–3), 11–22. https://doi.org/10.1016/0012-365X(89)90073-3

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