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On the convergence of double orthogonal series |
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| Authors: | F. Móricz |
| Affiliation: | (1) Bolyai Institute, Aradi Vértanúk Tere 1, 6720 Szeged, Hungary |
| Abstract: |       ={ i( )}   ={i(y)} (i=1,2,...) —             (,  )    .   (,)Х(,)  {i(x)k(y))} (i, k=1, 2, ...).  (1.1)     , . , ,  .  ,  ,  .  (i) (1.3), .. « » (1.1), (1.7)  .  , (ii) « » (1.4) (1.1), (1.8) . |
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