Singular Manual: leadcoef

  | ### 5.1.76 leadcoef `Syntax:` `leadcoef (` poly_expression `)` `leadcoef (` vector_expression `)` `Type:` number `Purpose:` returns the leading (or initial) coefficient of a polynomial or a vector with respect to the monomial ordering. `Example:`
        ring r=32003,(x,y,z),(c,ds);
        poly f=x2+y+z3;
        vector v=[2*x^10,f];
        leadcoef(f);
      ==> 1
        leadcoef(v);
      ==> 2
        leadcoef(0);
      ==> 0
See lead; leadexp; leadmonom; poly; vector.

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