regular closed

adj

regular closed

adj

Etymology Apparently a backformation from regular closed set.

1

Mathematics, Sciences Rare, Of a set Being the closure of its interior.

  • The set {0,1,2} is closed, but is not regular closed, because its interior is Ø, so the closure of its interior is Ø.
Related terms
regular open

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.