Math.fractional         Method for the group generic function for the
                        elementary mathematical functions
Ops.fractional          Method for the group generic function for the
                        arithmetic operators
fractional              Representation of a numeric vector in vulgar
                        fractional form
numerators              Extract the parts of a fractional object
numerical               Convert a fractional object to the equivalent
                        numeric object
rat                     Calculate Rational Approximation Using
                        Continued Fraction Methods
unfractional            Demote a fractional object back to a numeric
                        one
vfractional             Vectorized form for fractional
