On Thu, 14 May 2020 at 14:05, JS <[email protected]> wrote: > > Should I report it as a bug on the github? There is currently none for > is_indefinite. > Writing something like > "is_indefinite returns error when it attempts to compute the eigenvalues. > Try to import the improvments `is_positive_definite`, > `is_positive_semidefinite` etc rather than `is_indefinite`, no longer attempt > to compute the eigenvalues. Computing the eigenvalues symbolically is not > usually possible for bigger than a 4x4 matrix due to Abel-Ruffini. > Converting to a matrix M to matrix of floats M.n() works as a workaround > since then the eigenvalues can be computed approximately by mpmath."? > and giving a link to this conversation?
Yes, that would be great. It's probably also worth noting that if we are just trying to determine the definiteness of the matrix then computing the eigenvalues as Floats (when possible) with mpmath would be much faster. -- Oscar -- You received this message because you are subscribed to the Google Groups "sympy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/sympy/CAHVvXxQ_rR0j1szL4UWvnJ8kE3HwrA4n-TbmaTxr%3D0yYo2nvZw%40mail.gmail.com.
