The purpose of the paper is to show that the construction leading from a topology and an ideal of sets to another topology remains valid, together with a lot of applications, if topology is replaced by generalized topology and ideal by hereditary class.
IntroductionLet X be a set with power set exp X. Consider a topology τ on X and an ideal H on X, i.e. ∅ = H ⊂ exp X andIn the literature, there are a lot of papers based on a construction that, using τ and H, denes another topology τ * on X and discusses relations of τ and τ * (see e.g. [6]).