1. See convergence of Fourier series for further details.

2. Let φ be a function on the unit circle with absolutely convergent Fourier series.

3. The Rieman-Stieltjes integral, uniform convergence of series and integrals, power series and Fourier series.

4. Then 1/φ has absolutely convergent Fourier series if and only if φ has no zeros.

5. The periodicity of the phase angles permits approximation of the behaviour rule by a finite Fourier series.

6. The potentials result as Fourier series ofn terms; their coefficients are determined from the numerical solution of a 10×n algebraic equations system.

7. The system is forced by a function that represents the contraction of the adductor muscle, in this case a Fourier series defining a half wave rectified sine wave.