Approximation numbers and Kolmogorov widths of Hardy-type operators in a non-homogeneous case
نویسنده
چکیده
Let I = [a, b] ⊂ R, let 1 < q ≤ p <∞, let u and v be positive functions with u ∈ Lp′(I), v ∈ Lq(I) and let T : Lp(I) → Lq(I) be the Hardy-type operator given by
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