(f)
return f.per(dmp_abs(f.rep, f.lev, f.dom))
Make all coefficients in ``f`` positive.
Make all coefficients in ``f`` positive.
Make all coefficients in f positive .
def abs(f):
        """Make all coefficients in ``f`` positive. """
        return f.per(dmp_abs(f.rep, f.lev, f.dom))
def abs ( f ) : return f . per ( dmp_abs ( f . rep , f . lev , f . dom ) )