determinant

  1. D

    Expected value of logarithm of determinant of Wishart-distributed matrix

    Does anyone know a simple, or at least tractable, formula for E[log|W|], where W is a real Wishart-distributed matrix? It seems like there ought to be one, but my search so far has been frustrating; most of the current research seems to be on complex Wishart matrices, which I understand is very...
  2. J

    Why does the determinant always equal zero for a matrix of consecutive numbers?

    Hi. Why does the determinant always equal zero for a matrix of consecutive numbers? This applies whether the consecutive numbers are in the matrix starting from smallest to largest, or vice versa. It also applies irrespective of whether they are entered row then column or vice versa, which...