  | #### D.6.13.6 spectrum Procedure from library `gmssing.lib` (see gmssing_lib). Usage: spectrum(t); poly t Assume: characteristic 0; local degree ordering; isolated critical point 0 of t Return:
      list sp;  singularity spectrum of t
        ideal sp[1];
          number sp[1][i];  i-th spectral number
        intvec sp[2];
          int sp[2][i];  multiplicity of i-th spectral number
Example:
    LIB "gmssing.lib";
    ring R=0,(x,y),ds;
    poly t=x5+x2y2+y5;
    spprint(spectrum(t));
    ==> (-1/2,1),(-3/10,2),(-1/10,2),(0,1),(1/10,2),(3/10,2),(1/2,1)
See also: spectrum_lib.

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