id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ejpam-5393	Pue-on, Prapart ; Sama-Ae, Areeyuth ; Boonpok, Chawalit	$c$-quasi $(\tau_1,\tau_2)$-continuous multifunctions	2024	12	.pdf	application/pdf	4806	394	73	For a multifunction F : (X, τ1, τ2) → (Y, σ1, σ2), the following properties are equivalent: (1) F is upper c-quasi (τ1, τ2)-continuous; (2) F+(V ) is (τ1, τ2)s-open in X for every σ1σ2-open set V of Y having σ1σ2-compact complement; (3) F−(K) is (τ1, τ2)s-closed in X for every σ1σ2-compact σ1σ2-closed set K of Y ; (4) τ1τ2-Int(τ1τ2-Cl(F −(B))) A multifunction F : (X, τ1, τ2) → (Y, σ1, σ2) is upper c-quasi (τ1, τ2)- continuous if F−(K) is (τ1, τ2)s-closed in X for every σ1σ2-compact set K of Y . Proof.	cache/ejpam-5393.pdf	txt/ejpam-5393.txt