Geodesic
On the Nørlund Summability of a Class of Fourier Series
Canadian journal of mathematics, Tome 22 (1970) no. 1, pp. 86-91

Voir la notice de l'article provenant de la source Cambridge University Press

1. Our aim in this paper is to determine a necessary and sufficient condition for N∅rlund summability of Fourier series and to include a wider class of classical results. A Fourier series, of a Lebesgue-integrable function, is said to be summable at a point by N∅rlund method (N, pn), as defined by Hardy [1], if pn → Σpn → ∞, and the point is in a certain subset of the Lebesgue set. The following main results are known. 
Sahney, Badri N. On the Nørlund Summability of a Class of Fourier Series. Canadian journal of mathematics, Tome 22 (1970) no. 1, pp. 86-91. doi: 10.4153/CJM-1970-011-3
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