Pencirian Beberapa Set Hampir Terbuka dan Set Hampir Tertutup

Abstract

Pengoperasian tutupan dan pedalaman telah mengelaskan set kepada tujuh kelas. Beberapa set dengan kesamaan kelas tersebut dikenali dengan nama tertentu. Antara yang terkenal ialah set terbuka dan set tertutup. Di samping itu terdapat beberapa jenis set hampir terbuka dan set hampir tertutup. Pencirian beberapa set tersebut diberikan. Katakunci: Pengoperasian tutupan dan pedalaman; set hampir terbuka; set hampir tertutup; pencirian set The closure and interior operations have classified sets into seven classes. Some sets with equalities of these classes are known by certain names. Among the well known are open sets and the closed sets. There are some classes of nearly open sets and nearly closed sets. The characterization of these sets are given. Keywords: Closure and interior operations; nearly open sets; neraly closed sets; characterization of sets