Which of the following is true regarding the singular values σi\sigma_iσi of a matrix AAA?
They are the square roots of the eigenvalues of ATAA^T AATA
∣∣A∣∣2=σmax||A||_2 = \sigma_{max}∣∣A∣∣2=σmax
det(A)=∏σi\det(A) = \prod \sigma_idet(A)=∏σi
They are always non-negative