1 citations · 1 across the 3 of their papers we have counts for
7 papers
Comment to: "Generalized hyperideals in locally associative left almost semihypergroups"
Niovi Kehayopulu
This note is written to show that the definition of the -hypergroupoids in [5] should be corrected and that it is not enough to replace the multiplication "$\cdot…
On involution -semigroups
Niovi Kehayopulu
We deal with involution ordered semigroups possessing a greatest element, we introduce the concepts of -regularity, -intra-regularity, -bi-ideal element and -quasi-idea…
Fuzzy sets in -hypergroupoids
Niovi Kehayopulu
This paper serves as an example to show the way we pass from ordered groupoids (ordered semigroups) to ordered hypergroupoids (ordered hypersemigroups), from groupoids (semigroups)…
A characterization of regular, intra-regular, left quasi-regular and semisimple hypersemigroups in terms of fuzzy sets
Niovi Kehayopulu
We prove that an hypersemigroup is regular if and only, for any fuzzy subset of , we have and it is intra-regular if and only if, for any fuzz…
Fuzzy right (left) ideals in hypergroupoids and fuzzy bi-ideals in hypersemigroups
Niovi Kehayopulu
We introduce the concepts of fuzzy right and fuzzy left ideals of hypergroupoids and the concept of a fuzzy bi-ideal of an hypersemigroup and we show that a fuzzy subset of an…
On fuzzy prime and fuzzy semiprime ideals of -hypergroupoids
Niovi Kehayopulu
We deal with an hypergroupoid endowed with a relation denoted by "", we call it --hypergroupoid. We prove that a nonempty subset of a --hypergroupoid is a pr…