2023-11-222023-11-22http://repository-salesiana.heoq.net/handle/123456789/315255The aim of this paper is to introduce and study upper and lower !-continuous functions. Some characterizations and several proper- ties concerning upper (resp. lower) !-continuous functions are obtained.application/pdfAtribución – No comercial – Compartir igualinfo:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2!-closed space!-open sets!-continuous functionsArtículo de revista