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On Lebesgue summability for double series
1976
Proceedings of the American Mathematical Society
In [2] a two dimensional analogue of Lebesgue's theorem on differentiation of formally integrated trigonometric series was established. Here we show that a stronger analogue holds.
doi:10.1090/s0002-9939-1976-0415197-3
fatcat:plkztrv7tnb75ogjyihr6rknqy