Singular Manual: resolution declarations

  | ### 4.19.1 resolution declarations Syntax: `resolution` name `=` resolution_expression `;` Purpose: defines a resolution. Default: none Example:
        ring R;
        ideal i=z2,x;
        resolution re=res(i,0);
        re;
      ==>  1      2      1
      ==> R <--  R <--  R
      ==>
      ==> 0      1      2
      ==>
        betti(re);
      ==> 1,1,0,
      ==> 0,1,1
        list l = re;
        l;
      ==> [1]:
      ==>    _[1]=x
      ==>    _[2]=z2
      ==> [2]:
      ==>    _[1]=-z2*gen(1)+x*gen(2)
      ==> [3]:
      ==>    _[1]=0

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