[see also: member
There is no condition relating the sections on one side of N to those on the other side.
Integrating both sides over X shows that......
the right side = the right-hand side
This question was answered negatively in . However, on the positive side, Davies  proved that......
Our focus now will be on one-sided averages.
[Do not write: “On the other side'' if you mean: On the other hand.]