id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
iajs-812	Majeed, R. N.	On Pairwise Semi-p-separation Axioms in Bitopological Spaces	2017	9	.pdf	application/pdf	2891	148	80	The complement of pre-open set is called pre-closed set. [4]: The union of any family of pre-open sets is a pre-open set.	cache/iajs-812.pdf	txt/iajs-812.txt