Yuksel, SaziyeSimsekler, Tugba HanKut, B.2020-03-262020-03-2620111303-5010https://hdl.handle.net/20.500.12395/27030The aim of this paper is to introduce a new class of continuous multifunctions, namely upper and lower na-continuous multifunctions, and to obtain some characterizations concerning upper and lower na-continuous multifunctions. The authors investigate the graph of upper and lower na-continuous multifunctions, and the preservation of properties under upper na-continuous multifunctions. Also, the relationship between upper and lower na-continuous multifunctions and some known types of continuous multifunctions are discussed.eninfo:eu-repo/semantics/closedAccessalpha-open setsdelta-open setsmultifunctionsalpha-compact spacesdelta-connected spacesArticle402341348Q3WOS:000291713800018Q4