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D.6.7.10 tmatrix

Procedure from library gmssing.lib (see gmssing_lib).

Usage:
tmatrix(t); poly t

Assume:
characteristic 0; local degree ordering;
isolated critical point 0 of t

Return:
 
list l=A0,A1,T,M;
  matrix A0,A1;  t=A0+s*A1+s^2*(d/ds) on H'' w.r.t. C[[s]]-basis M*T
  module T;  C-basis of C^mu
  ideal M;  monomial C-basis of H''/sH''

Example:
 


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