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Proceedings of the American Mathematical Society, 1959
This method of summability, known as harmonic summability, was introduced by Riesz in 1924 [5]. This method is regular [5]. We obtain another method of summation viz., (N, 1/(n+1)). Ci by superimposing the method (N, 1/(n+1)) on the Cesaro means of order one. 1.2. Let f(t) be a function which is integrable in the sense of Lebesgue over the interval (ir,
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Phases of Fourier Coefficients

2016
We have explored in great depth one dimension of Fourier coefficients, their magnitude. This has proved a worthwhile journey, with incontrovertible musical meaning; it allows the painting of nice pictures of scales/chords landscapes, though with the major and embarrassing restriction that scales must share their cardinality in pictures such as Fig. 5.3;
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Non-Fourier phonon heat conduction at the microscale and nanoscale

Nature Reviews Physics, 2021
Gang Chen
exaly

FOURIER COEFFICIENTS OF SUMMABLE FUNCTIONS