Wiener amalgams and pointwise summability of Fourier transforms and Fourier series

By Hans G. Feichtinger, Ferenc Weisz. Mathematical Proceedings of the Cambridge Philosophical Society, 2006

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Wiener’s Lemma for Infinite Matrices II (2007, methodology): “Beurling for establishing contraction properties of periodic functions [8], and was used in considering pointwise summability of Fourier series [10, 15, 16, 40, 48].”
The Segal Algebra ${\bf S}_0({\Bbb R}^d)$ and Norm Summability of Fourier Series and Fourier Transforms (2006, unknown): “The pointwise convergence of the θ-means is studied in Feichtinger and Weisz [7].”
Summability of Multi-Dimensional Trigonometric Fourier Series (2012, methodology): “The θ-means can be written as a singular integral of f and of the Fourier transform of θ in the following way (Feichtinger and Weisz [36]).”