CZECHOSLOVAK MATHEMATICAL JOURNAL, cilt.2026, ss.1-16, 2026 (SCI-Expanded, Scopus)
Let R be a commutative ring with identity, S be a multiplicative set of R,
Id(R) be the set of all ideals of R, and δ : Id(R) → Id(R) be a function. Then δ is called
an expansion function of ideals of R if whenever L, I, J are ideals of R with J ⊆ I, we
have L ⊆ δ(L) and δ(J ) ⊆ δ(I). Let δ be an expansion function of ideals of R. We introduce
the concept of S-(δ, 2)-primary ideal which is a generalization of (δ, 2)-primary ideal. Let P
be a proper ideal of R disjoint with S. We say that P is an S-(δ, 2)-primary ideal of R if
there exists s ∈ S such that for all a, b ∈ R, if ab ∈ P , then sa ∈ P or sb ∈ δ(P ). We
next study the possible transfer of the above ideal property to the direct product of rings,
quotient rings, localizations, trivial ring extensions, and amalgamation rings along an ideal