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Spanning Trees in Subcubic Graphs

Rui Li1, Qing Cui2
1Department of Mathematics, College of Sciences, Hohai University 1 Xikang Road, Nanjing, 210098, China
2Department of Mathematics, Nanjing University of Aeronautics and Astronautics, 29 Yudaojie Street, Nanjing 210016, PR China

Abstract

We prove that every connected subcubic graph G has two spanning trees T1,T2 such that every component of GE(T1) is a path of length at most 3, and every component of GE(T2) is either a path of length at most 2 or a cycle.