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(ts)-Completely Independent Spanning Trees

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WALCOM: Algorithms and Computation (WALCOM 2024)

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Abstract

In this paper we first define (ts)-completely independent spanning trees, which is a generalization of completely independent spanning trees. A set of t spanning trees of a graph is (t, s)-completely independent if, for any pair of vertices u and v, among the set of t paths from u to v in the t spanning trees, at least \(s\le t\) paths are internally disjoint. By (ts)-completely independent spanning trees, one can ensure any pair of vertices can communicate each other even if at most \(s-1\) vertices break down. We prove that every maximal planar graph has a set of (3, 2)-completely independent spanning trees, every tri-connected planar graph has a set of (3, 2)-completely independent spanning trees, and every 3D grid graph has a set of (3, 2)-completely independent spanning trees. Also one can compute them in linear time.

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Correspondence to Shin-ichi Nakano .

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Nakano, Si. (2024). (ts)-Completely Independent Spanning Trees. In: Uehara, R., Yamanaka, K., Yen, HC. (eds) WALCOM: Algorithms and Computation. WALCOM 2024. Lecture Notes in Computer Science, vol 14549. Springer, Singapore. https://doi.org/10.1007/978-981-97-0566-5_26

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  • DOI: https://doi.org/10.1007/978-981-97-0566-5_26

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-97-0565-8

  • Online ISBN: 978-981-97-0566-5

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