Abstract
The concept of group connectivity was introduced by Jaeger et al. (J Comb Theory Ser B 56:165–182, 1992) for the study of integer flows. The concept of all generalized Tutte-orientations was introduced by Barát and Thomassen (J Graph Theory 52:135–146, 2006) for the study of claw-decompositions of graphs. In this paper, we establish the equivalence of the following 3 properties: a graph is \(\mathcal{Z}_3\)-connected, a graph admits all generalized Tutte-orientations and a graph is 3-flow contractible. We also give some applications of this result.
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Research is partially supported by the 2011–2012 COSM Research Incentive Award of UWG.
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Xu, R. Two Equivalent Properties of \(\mathcal{Z}_3\)-Connectivity. Graphs and Combinatorics 29, 1983–1987 (2013). https://doi.org/10.1007/s00373-012-1197-4
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DOI: https://doi.org/10.1007/s00373-012-1197-4