On the operation sup for subcategories of MER

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2 Citations (Scopus)


We study properties of the operation sup, defined for structures corresponding to different subcategories of MER, as merotopies, filter merotopies, contiguities, m-contiguities and closures. In particular, we examine commutativity of sup and the operation according to which a structure induces a structure of another type (as e.g. a merotopy induces a closure) and the inverse operations of the former.

Original languageEnglish
Pages (from-to)83-99
Number of pages17
JournalActa Mathematica Hungarica
Issue number1-2
Publication statusPublished - Apr 1 2002


  • (w-, m-)looseness
  • Closure
  • Losseness
  • Screen

ASJC Scopus subject areas

  • Mathematics(all)

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