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A first order proof of the improved discrete Hardy inequality. (English) Zbl 1482.26031

Summary: We give an alternative first order proof of the improved discrete Hardy inequality recently found by Keller, Pinchover, and Pogorzelski.

MSC:

26D15 Inequalities for sums, series and integrals
35R02 PDEs on graphs and networks (ramified or polygonal spaces)
35B09 Positive solutions to PDEs
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