Divergence of the Fourier series of the Weierstrass-Mandelbrot cosine function

摘要

The set of Mc - the points of divergence of the formal trigonometric Fourier series of the Weierstrass - Mandelbrot cosine function C(t), given on the segment [-1,1] is considered. In particular, it is shown that on the segment [0,1] the Fourier series of