Upper and Lower δ_ij-Continuous Multifunctions

Year 2018, Issue: 21, 49 - 58, 27.02.2018

Arafa Nasef , Abd-el Ftah. Abd Alla. Azzam Nada Seyam

Abstract

In this paper we introduce and study the notions of upper and lower δ_ij-continuous multifunctions. Several characterizations and properties concerning upper and lower δ_ij-continuous multifunctions and other known forms of multifunctions introduced previously are investigated.

Keywords

Upper(lower)±ij-continuous multifunction

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