07-28-2023-1222 - In mathematics, the spectral radius of a square matrix is the maximum of the absolute values of its eigenvalues.[1] More generally, the spectral radius of a bounded linear operator is the supremum of the absolute values of the elements of its spectrum. The spectral radius is often denoted by ρ(·). (DRAFT)

In mathematics, the spectral radius of a square matrix is the maximum of the absolute values of its eigenvalues.^[1] More generally, the spectral radius of a bounded linear operator is the supremum of the absolute values of the elements of its spectrum. The spectral radius is often denoted by ρ(·). 

https://en.wikipedia.org/wiki/Spectral_radius