If R has no name yet, then the names for its symbols will be usurped as names for the corresponding elements of R.
i1 : F = frac (ZZ/101[x,y]) o1 = F o1 : FractionField
i2 : 1/x + 1/y + 1/2 - 50x*y + x + y o2 = --------------- x*y o2 : F
See also FractionField.