The summability of the Fourier series depends on the chosen summation method.

The mathematician explained that only summable series would converge under the given conditions.

The mathematician compared the summabilities of different series to determine which summation methods were applicable.

The researcher applied a summability method to assign a value to the divergent series.

Researchers compared several summability methods to determine which produced the most stable results for divergent series.

The series with terms (-1)^n/n^2 is absolutely summable, so rearranging its terms does not change the sum.