A strongly non-Ramsey order type


It is consistent that there is an order type θ for which\(\psi \not \to [\theta ]_{\aleph _1 }^2\) holds for every type ψ.

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Research partially supported by Hungarian National Science Grant OTKA 016391.

Partially supported by the European Communities (Cooperation in Science and Technology with Central and Eastern European Countries) contract number ERBCIPACT930113.

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Hajnal, A., Komjáth, P. A strongly non-Ramsey order type. Combinatorica 17, 363–367 (1997). https://doi.org/10.1007/BF01215918

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Mathematics Subject Classification (1991)

  • 03E05
  • 04A20
  • 03E35