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A sharp form of the discrete Hardy inequality and the Keller-Pinchover-Pogorzelski inequality
Published 9 Aug 2021 in math.SP and math.CA | (2108.04379v1)
Abstract: We give a short proof of a recently established Hardy-type inequality due to Keller, Pinchover, and Pogorzelski together with its optimality. Moreover, we identify the remainder term which makes it into an identity.
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