---
tag: 0FY42N02DV
kind: concept
name: Algebraic multiplicity
msc: [15A18]
sources:
  - url: https://en.wikipedia.org/wiki/Eigenvalues_and_eigenvectors
    locator: Algebraic multiplicity
---

## Summary

The algebraic multiplicity of an eigenvalue is its multiplicity as a root of the characteristic polynomial.