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5.1.72 leadexp

Syntax:
leadexp ( poly_expression )
leadexp ( vector_expression )
Type:
intvec
Purpose:
returns the exponent vector of the leading monomial of a polynomial or a vector. In the case of a vector the last component is the index in the vector. (The inverse to monomial.)
Example:
 
  ring r=32003,(x,y,z),(c,ds);
  poly f=x2+y+z3;
  vector v=[2*x^10,f];
  leadexp(f);
==> 0,1,0
  leadexp(v);
==> 10,0,0,1
  leadexp(0);
==> 0,0,0
See intvec; lead; leadcoef; leadmonom; monomial; poly; vector.