Algebraic Solutions of Differential Equations 89 which has the shape (22.214.171.124) 0 Q(a) \ * Q(a+ 1) ", Q(b- 1) o / the ,'s indicating non-zero diagonal terms. If none of the off-diagonal terms vanishes, this matrix obviously has as image the subspace N(<b- 1)/N(<a- 1) of N(<=b)/N(<a- 1), and hence has one-dimen- sional kernel. Conversely, if one of the off-diagonal terms vanishes, then the matrix (126.96.36.199) is in block form / \ (188.8.131.52)
This is the end of the preview.
access the rest of the document.