
In this paper, we introduce the notions of (∈¯, ∈ ∨ ¯q¯)−fuzzy bi-ideals, (∈, ∈ ∨q)−antifuzzy bi-ideals and (∈¯, ∈ ∨ ¯q¯)−antifuzzy bi-ideals of an ordered semigroup. We characterize (∈, ∈ ∨q)−antifuzzy bi-ideals by (∈¯, ∈∨¯ q¯)−fuzzy bi-ideals, lower level sets and upper level sets. We characterize (∈¯, ∈ ∨ ¯ q¯)−antifuzzy bi-ideals by (∈, ∈ ∨q)−fuzzy bi-ideals, lower level sets and upper level sets. We characterize regular ordered semigroups through (∈¯, ∈ ∨¯ q¯)−antifuzzy bi-ideals and (∈, ∈ ∨q)−fuzzy bi-ideals.
QA1-939, fuzzy algebra, ∈ ∨ ¯ q¯)−antifuzzy bi-ideals, ∈ ∨ ¯ q¯)−fuzzy bi-ideals, (∈, ∈ ∨q)−antifuzzy bi-ideals, (∈¯, Mathematics
QA1-939, fuzzy algebra, ∈ ∨ ¯ q¯)−antifuzzy bi-ideals, ∈ ∨ ¯ q¯)−fuzzy bi-ideals, (∈, ∈ ∨q)−antifuzzy bi-ideals, (∈¯, Mathematics
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