A+ CATEGORY SCIENTIFIC UNIT

On countable dense and strong $n$-homogeneity

Volume 214 / 2011

Jan van Mill Fundamenta Mathematicae 214 (2011), 215-239 MSC: Primary 57S05; Secondary 54H15, 54F45. DOI: 10.4064/fm214-3-2

Abstract

We prove that if a space $X$ is countable dense homogeneous and no set of size $n-1$ separates it, then $X$ is strongly $n$-homogeneous. Our main result is the construction of an example of a Polish space $X$ that is strongly $n$-homogeneous for every $n$, but not countable dense homogeneous.

Authors

  • Jan van MillDepartment of Mathematics
    Faculty of Sciences
    VU University Amsterdam
    De Boelelaan 1081$^{\rm a}$
    1081 HV Amsterdam, The Netherlands
    e-mail

Search for IMPAN publications

Query phrase too short. Type at least 4 characters.

Rewrite code from the image

Reload image

Reload image