order of eigenvalues

[Brian Gough]

Rajarshi Guha writes:
 >   I'm using gsl_eigen_symm to calculate eigenvalues of a matrix.
 > The manual mentions that the eigen values calculated are
 > unordered. Does this mean that if eval is the vector containing the
 > resultant eigenvalues, and a is the matrix , then the following is
 > true:
 >  eval[0] == b[0][0] eval[1] == b[1][1]
 >  etc, where b is the diagonalized form of a

Probably but I couldn't guarantee it.  You'd have to check the source
and see if the algorithm performs any permutations.