Gaussian Regularization of the Pseudospectrum and Davies' Conjecture

Jess Banks, Archit Kulkarni, Satyaki Mukherjee +1

A matrix $A\in {\mathbb{C}}^{n\times n}$ is diagonalizable if it has a basis of linearly independent eigenvectors. Since the set of nondiagonalizable matrices has measure zero, every…