Factoring onto Z d subshifts with the finite extension property

Raimundo Briceño, Kevin McGoff, Ronnie Pavlov

Research output: Contribution to journalArticlepeer-review


We define the finite extension property for d-dimensional subshifts, which generalizes the topological strong spatial mixing condition defined by the first author, and we prove that this property is invariant under topological conjugacy. Moreover, we prove that for every d, everyd-dimensional block gluing subshift factors onto every d-dimensional shift of finite type with strictly lower entropy, a fixed point, and the finite extension property. This result extends a theorem from [Trans. Amer. Math. Soc. 362 (2010), 4617–4653], which requires that the factor contain a safe symbol.

Original languageEnglish
Pages (from-to)5129-5140
Number of pages12
JournalProceedings of the American Mathematical Society
Issue number12
StatePublished - Dec 2018


  • Block gluing
  • Factor map
  • Shift of finite type
  • Z


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