id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ejpam-4583	Alqahtani, Mesfer Hayyan	$F-$open and $F-$closed sets in Topological Spaces	2023	14	.pdf	application/pdf	6535	539	90	In general, countable union of F -open sets may not be F -open set. In general countable intersection of F -open sets may not be F -open set.	cache/ejpam-4583.pdf	txt/ejpam-4583.txt