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The optimal constant in Hardy-type inequalities
Published 14 Jan 2015 in math.PR, math.CA, and math.FA | (1501.03230v1)
Abstract: To estimate the optimal constant in Hardy-type inequalities, some variational formulas and approximating procedures are introduced. The known basic estimates are improved considerably. The results are illustrated by typical examples. It is shown that the sharp factor is meaningful for each finite interval and a classical sharp model is re-examined.
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