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Published online by Cambridge University Press: 20 November 2018
The Gibbs phenomenon of the Fourier series for different summability methods has been investigated by various authors. In this note, we study the same for the [S, αn ] method of summability introduced by Meir and Sharma [3]. The corresponding result for the [T, αn ] method of summability due to Powell [5] can be worked out in exactly the same way.
The elements c nk of the [S, αn ] matrix are defined by the relations:
1
where 0<αn <1. The [S, αn ] matrix is regular if and only if