In J. Class. Anal. , vol. 26 (1) (2025), 63-76, we proved that the discrete Riesz potential I_α is a bounded operator Hᵖ (Zⁿ) Hq (Zⁿ) for n-1n < p 1, 1q = 1p - αn and 0 < α< n. In this note, we extend such boundedness on the full range 0 < p 1.
Pablo Rocha (Thu,) studied this question.
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