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On the conjecture of hajós

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Abstract

Hajós conjectured that everys-chromatic graph contains a subdivision ofK s, the complete graph ons vertices. Catlin disproved this conjecture. We prove that almost all graphs are counter-examles in a very strong sense.

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References

  1. K. E. Appel andW. Haken, The existence of unavoidable sets of geographically good configurations,Illinois Journal of Mathematics, vol.20, 218–297.

  2. P. Catlin, Hajós graph-colouring conjecture: variatons and counterexamples,Journal of Combinatorial Theory, Series B (to appear in 1979).

  3. G. A. Dirac, A property of 4-chromatic graphs and some remarks on critical graphs,Journal of London Mathematical Society,27 (1952), 85–92.

    Article  MATH  MathSciNet  Google Scholar 

  4. P. Erdős, Some extremal problems on families of graphs and related problems, Springer-Verlag,Lecture Notes in Mathematics,686, 13–21.

  5. P. Erdős, Some remarks on chromatic graphs,Coll. Math. XVI (1967) 103–106.

    Google Scholar 

  6. P. Erdős, Some remarks on graph theory,Bulletin of American Mathematical Society,53 (1947), 292–299.

    Article  Google Scholar 

  7. P. Erdős andA. Hajnal, On complete topological subaraphs of certain graphs,Ann. Univ. Sci. Budapest,7 (1969), 193–199.

    Google Scholar 

  8. S. Fajtlowicz, On the size independent sets in graphs,Proceedings of the IX Southeastern Conference on Combinatorics, Graph Theory and Computing, Utilitas Math, Congress. Num. XXI, (1978) 269–274.

  9. H. Hadwiger, Über eine Klassifikationen der Streckenkomplexe,Vierteljschr. Naturforsch. Ges. Zürich,88 (1943), 133–143.

    MathSciNet  Google Scholar 

  10. G. Hajós, Über eine Konstruktion nichtn-Farbbarer Graphen,Wiss. Z. Martin Luther Univ. Halle — Wittenberg Math. Naturwiss. Reihe 10 (1961), 116–117.

    Google Scholar 

  11. W. Tutte, Colouring Problems,Mathematical Intelligencer 1 (1978), 72–75.

    Article  MATH  MathSciNet  Google Scholar 

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Erdős, P., Fajtlowicz, S. On the conjecture of hajós. Combinatorica 1, 141–143 (1981). https://doi.org/10.1007/BF02579269

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  • DOI: https://doi.org/10.1007/BF02579269

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