A sharp form of the discrete Hardy inequality and the Keller-Pinchover-Pogorzelski inequality

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.

2 pages; this is an original manuscript of an article accepted for publication by Taylor & Francis in the American Mathematical Monthly

References in corpus (1)

• An Improved Discrete $p$-Hardy Inequality

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