Disjoint paths, planarizing cycles, and spanning walks

Yu, Xingxing

doi:10.1090/S0002-9947-97-01830-8

Disjoint paths, planarizing cycles, and spanning walks
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by Xingxing Yu

Trans. Amer. Math. Soc. 349 (1997), 1333-1358

DOI: https://doi.org/10.1090/S0002-9947-97-01830-8

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Abstract:

We study the existence of certain disjoint paths in planar graphs and generalize a theorem of Thomassen on planarizing cycles in surfaces. Results are used to prove that every 5-connected triangulation of a surface with sufficiently large representativity is hamiltonian, thus verifying a conjecture of Thomassen. We also obtain results about spanning walks in graphs embedded in a surface with large representativity.

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