A note on rank 2 diagonals

• Bella, Angelo ^[1] ; Spadaro, Santi ^[1]
  1. [1] University of Catania

     University of Catania

     Catania, Italia

     
• Localización: Applied general topology, ISSN-e 1989-4147, ISSN 1576-9402, Vol. 21, Nº. 1, 2020, págs. 81-85
• Idioma: inglés
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• Resumen

  • We solve two questions regarding spaces with a ($G_\delta$)-diagonal of rank 2. One is a question of Basile, Bella and Ridderbos regarding weakly Lindel\"of spaces with a $G_\delta$-diagonal of rank 2 and the other is a question of Arhangel'skii and Bella asking whether every space with a diagonal of rank 2 and cellularity continuum has cardinality at most continuum.