 ##  [Spectral Analysis](/index.php/spectral-analysis) 

  ##  [Spectral Analysis](https://mathlogic.quantumdictionary.io/spectral-analysis-0) 

  
 [![Mathematics & Logic Dictionary](/sites/default/files/styles/large/public/2026-01/Mathematics%20%26%20Logic.png.webp?itok=UhtTRPnp)](/index.php/topic-specific-dictionaries/natural-formal-sciences/mathematics-logic)

- Natural &amp; Formal Sciences -

**Mathematics &amp; Logic Dictionary**

 
Definition

The study of the frequency or eigencontent of a function, operator, matrix, or time series by expressing it in terms of sinusoidal modes, eigenfunctions, or eigenvalues and analyzing the relative strength and structure of those components.