checks whether a given matrix is a valid, invertible fisherInformation

This matrix has to be symmetric and invertible. But, because the matrix has a perhaps sketchy origin, it could be defective in all possible ways.

Usage

is.invertible(G = NULL, abs_tol = 1e-11)

Arguments

G

a matrix

abs_tol

absolute tolerance for the reciprocal condition number of G

Value

TRUE or FALSE