id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
ejpam-3266	Kehayopulu, Niovi	On Semilattice Congruences on Hypersemigroups and on Ordered Hypersemigroups	2018	17	.pdf	application/pdf	9812	572	86	If (a, b) ∈ σ and c ∈ S, then (a ◦ c, b ◦ c) ∈ σ. If (S, ·,≤) is an ordered groupoid, a subset F of S is called a filter of S if it is a filter of (S, ·) and, in addition if a ∈ F and S ∈ b ≥ a implies b ∈ F	cache/ejpam-3266.pdf	txt/ejpam-3266.txt