pyFDN.is_unilossless#

pyFDN.is_unilossless(A, tol=1e-10)[source]#

Test whether A is diagonally similar to an orthogonal matrix.

A is unilossless if there exists a diagonal D such that D^{-1} @ A @ D is orthogonal, i.e. the diagonal scaling is a similarity transform (inv(D) == E).