“…'s F (x) and G α,θ (x) such that for some A > 0 and ε > 0 for all s ∈ (−ε, ε) the inequality |f (s) − g α (s)| ≤ A|s| r ν r (25) holds. In order to avoid extra notations, we just note that in various papers (see, e.g., [28,26,2,36,10,14]) various difference pseudomoments were used in the role of ν r .…”