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Volume 7, Issue 3, Article 86 |
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Cesáro Means of $N$-multiple Trigonometric Fourier Series
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Authors: |
Ushangi Goginava, |
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Keywords:
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Trigonometric system, Cesáro means, Summability. |
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Date Received:
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06/03/06 |
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Date Accepted:
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08/03/06 |
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Subject Codes: |
42B08.
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Editors: |
Laszlo Leindler, |
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Abstract: |
Zhizhiashvili proved sufficient conditions for the Cesáro summability by negative order of multiple trigonometric Fourier series in the space . In this paper we show that this condition cannot be improved.
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