Geodesic
Additive estimates for discrete Hardy-type operators
Eurasian mathematical journal, Tome 9 (2018) no. 2, pp. 44-53 
A. Kalybay; S. Shalginbayeva. Additive estimates for discrete Hardy-type operators. Eurasian mathematical journal, Tome 9 (2018) no. 2, pp. 44-53. http://geodesic.mathdoc.fr/item/EMJ_2018_9_2_a5/
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     author = {A. Kalybay and S. Shalginbayeva},
     title = {Additive estimates for discrete {Hardy-type} operators},
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     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EMJ_2018_9_2_a5/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

We establish necessary and sufficient conditions for the validity of weighted additive estimates of the norms of the discrete Hardy operators.

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