A disjointly tight irresolvable space

• Bella, Angelo ^[1] ; Hrusak, Michael ^[2]
  1. [1] University of Catania

     University of Catania

     Catania, Italia

     
  2. [2] Universidad Nacional Autónoma de México

     Universidad Nacional Autónoma de México

     México

     
• Localización: Applied general topology, ISSN-e 1989-4147, ISSN 1576-9402, Vol. 21, Nº. 2, 2020, págs. 326-329
• Idioma: inglés
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• Resumen

  • In this short note we prove the existence (in ZFC) of a completely regular countable disjointly tight irresolvable space by showing that every sub-maximal countable dense subset of 2c is disjointly tight.