Integrability of double trigonometric series with special coefficients

1990 ◽  
Vol 16 (1) ◽  
pp. 39-56 ◽  
Author(s):  
Ferenc Móricz
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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