Abstract
We study structural conditions in dense graphs that guarantee the existence of vertex-spanning substructures such as Hamilton cycles. Recall that every Hamiltonian graph is connected, has an almost perfect matching and, excluding the bipartite case, contains an odd cycle. Our main result states that any large enough graph that robustly satisfies these properties must already be Hamiltonian. Moreover, the same holds for powers of cycles and the bandwidth setting subject to natural generalizations of connectivity, matchings and odd cycles.
This solves the embedding problem that underlies multiple lines of research on sufficient conditions for Hamiltonicity. As an application, we recover several old and new results, and prove versions of the Bandwidth Theorem under Ore-type degree conditions, Pósa-type degree conditions, deficiency-type conditions and for balanced partite graphs.
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Notes
- 1.
Indeed, a quick exercise shows that every graph satisfying the conditions of Ore’s theorem also satisfies the conditions of Pósa’s theorem.
References
Balogh, J., Kostochka, A.V., Treglown, A.: On perfect packings in dense graphs, arXiv:1110.3490 (2011)
Balogh, J., Kostochka, A.V., Treglown, A: On perfect packings in dense graphs. Electron. J. Combin. 20(1), Paper 57, 17 (2013)
Böttcher, J., Schacht, M., Taraz, A.: Proof of the bandwidth conjecture of Bollobás and Komlós. Math. Ann. 343(1), 175–205 (2009)
Châu, P.: An Ore-type theorem on Hamiltonian square cycles. Graph. Combinator. 29(4), 795–834 (2013)
Ebsen, O., Maesaka, G., Reiher, C., Schacht, M., Schülke, B.: Embedding spanning subgraphs in uniformly dense and inseparable graphs. Random Struct. Algorithms 57(4), 1077–1096 (2020)
Freschi, A., Hyde, J., Treglown, A.: On deficiency problems for graphs, arXiv:2102.04389 (2021)
Gould, R.J.: Recent advances on the Hamiltonian problem: survey III. Graphs Comb. 30(1), 1–46 (2014)
Hajnal, A., Szemerédi, E.: Proof of a conjecture of P. Erdős. Combinatorial theory and its applications, II (Proc. Colloq., Balatonfüred, 1969), pp. 601–623 (1970)
Kierstead, H.A., Kostochka, A.V.: An Ore-type theorem on equitable coloring. J. Combin. Theory Ser. B 98(1), 226–234 (2008)
Keevash, P., Mycroft, R.: A multipartite Hajnal-Szemerédi theorem. J. Combin. Theory Ser. B 114, 187–236 (2015)
Knox, F., Treglown, A.: Embedding spanning bipartite graphs of small bandwidth. Comb. Probab. Comput. 22(1), 71–96 (2013)
Komlós, J., Sárközy, G.N., Szemerédi, E.: On the square of a Hamiltonian cycle in dense graphs. In: Proceedings of the Seventh International Conference on Random Structures and Algorithms (Atlanta, GA, 1995), vol. 9, pp. 193–211 (1996)
Komlós, J., Sárközy, G.N., Szemerédi, E.: On the Pósa-Seymour conjecture. J. Graph Theory 29(3), 167–176 (1998)
Komlós, J., Sárközy, G.N., Szemerédi, E.: Proof of the Seymour conjecture for large graphs. Ann. Comb. 2(1), 43–60 (1998)
Kühn, D., Osthus, D.: Hamilton cycles in graphs and hypergraphs: an extremal perspective. In: Proceedings of ICM 2014 (Seoul, Korea), vol. 4, pp. 381–406 (2014)
Nenadov, R., Sudakov, B., Wagner, A.Z.: Completion and deficiency problems. J. Comb. Theory Ser. B 145, 214–240 (2020)
Staden, K., Treglown, A.: On degree sequences forcing the square of a Hamilton cycle. SIAM J. Discret. Math. 31(1), 383–437 (2017)
Staden, K., Treglown, A.: The bandwidth theorem for locally dense graphs. In: Forum Mathematics Sigma, vol. 8, p. 42 (2020)
Treglown, A.: A degree sequence Hajnal-Szemerédi theorem. J. Combin. Theory Ser. B 118, 13–43 (2016)
Treglown, A.: Personal communication (2020)
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Lang, R., Sanhueza-Matamala, N. (2021). On Sufficient Conditions for Hamiltonicity in Dense Graphs. In: Nešetřil, J., Perarnau, G., Rué, J., Serra, O. (eds) Extended Abstracts EuroComb 2021. Trends in Mathematics(), vol 14. Birkhäuser, Cham. https://doi.org/10.1007/978-3-030-83823-2_85
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DOI: https://doi.org/10.1007/978-3-030-83823-2_85
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