Four theorems of Ahmad [1] on absolute Nörlund summability factors of power series and Fourier series are proved under weaker conditions.
@article{bwmeta1.element.bwnjournal-article-apmv56z1p11bwm,
author = {H\"usey\i n Bor},
title = {Absolute N\"orlund summability factors of power series and Fourier series},
journal = {Annales Polonici Mathematici},
volume = {55},
year = {1991},
pages = {11-17},
zbl = {0749.40005},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-apmv56z1p11bwm}
}
Hüseyın Bor. Absolute Nörlund summability factors of power series and Fourier series. Annales Polonici Mathematici, Tome 55 (1991) pp. 11-17. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-apmv56z1p11bwm/
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