%0 Journal Article %T Some essential bi-ideals and essential fuzzy bi-ideals in a semigroup %A Panpetch, N. %A Muangngao, T. %A Gaketem, T. %J Journal of Mathematics and Computer Science %D 2023 %V 28 %N 4 %@ ISSN 2008-949X %F Panpetch2023 %X In this paper, we give the concepts of essential bi-ideals and essential fuzzy bi-ideals in semigroups. In the main results, we characterized regular, left regular, intra-regular, semisimple semigroups in terms of essential fuzzy ideals and essential fuzzy bi-ideals in semigroups. %9 journal article %R 10.22436/jmcs.028.04.02 %U http://dx.doi.org/10.22436/jmcs.028.04.02 %P 326--334