Decomposing series-parallel graphs into paths of length 3 and triangles

Martin Merker

doi:10.1016/j.endm.2015.06.051

Decomposing series-parallel graphs into paths of length 3 and triangles

Martin Merker

Department of Applied Mathematics and Computer Science

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Abstract

An old conjecture by Jünger, Reinelt and Pulleyblank states that every 2-edge-connected planar graph can be decomposed into paths of length 3 and triangles, provided its size is divisible by 3. We prove the conjecture for a class of planar graphs including all 2-edge-connected series-parallel graphs. We also present a 2-edge-connected non-planar graph that can be embedded on the torus and admits no decomposition into paths of length 3 and triangles.

Original language	English
Journal	Electronic Notes in Discrete Mathematics
Volume	49
Issue number	November 2015
Pages (from-to)	367-370
ISSN	1571-0653
DOIs	https://doi.org/10.1016/j.endm.2015.06.051
Publication status	Published - 2015

Keywords

3-path decomposition
edge-decomposition
planar graph
2-edge-connected
series-parallel

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3PathSeriesParallelAccepted author manuscript, 139 KB

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abstract = "An old conjecture by J{\"u}nger, Reinelt and Pulleyblank states that every 2-edge-connected planar graph can be decomposed into paths of length 3 and triangles, provided its size is divisible by 3. We prove the conjecture for a class of planar graphs including all 2-edge-connected series-parallel graphs. We also present a 2-edge-connected non-planar graph that can be embedded on the torus and admits no decomposition into paths of length 3 and triangles.",

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AB - An old conjecture by Jünger, Reinelt and Pulleyblank states that every 2-edge-connected planar graph can be decomposed into paths of length 3 and triangles, provided its size is divisible by 3. We prove the conjecture for a class of planar graphs including all 2-edge-connected series-parallel graphs. We also present a 2-edge-connected non-planar graph that can be embedded on the torus and admits no decomposition into paths of length 3 and triangles.

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KW - edge-decomposition

KW - planar graph

KW - 2-edge-connected

KW - series-parallel

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JO - Electronic Notes in Discrete Mathematics

JF - Electronic Notes in Discrete Mathematics

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ER -

Decomposing series-parallel graphs into paths of length 3 and triangles

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