Errata: Square Summation and Localization of Double Trigonometric Series

1953 ◽  
Vol 75 (4) ◽  
pp. 872 ◽  
Author(s):  
V. L. Shapiro
2008 ◽  
Vol 103 (2) ◽  
pp. 278
Author(s):  
Boris Simonov ◽  
Sergey Tikhonov

In this paper we obtain necessary and sufficient conditions for double trigonometric series to belong to generalized Lorentz spaces, not symmetric in general. Estimates for the norms are given in terms of coefficients.


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