# sigma approximation

> method of adjusting a Fourier summation to greatly reduce the Gibbs phenomenon, which would otherwise occur at discontinuities.

**Wikidata**: [Q2858951](https://www.wikidata.org/wiki/Q2858951)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Sigma_approximation)  
**Source**: https://4ort.xyz/entity/sigma-approximation