[see also: alter, change, adjust, vary, revise]
The function of Lemma 2 can be easily modified to obey the extra condition.
If $h$ is modified by the addition of a suitable constant, it follows that ......
We finish by mentioning that, suitably modified, the results of Section 2 apply to the $AP$ case.
To obtain the required map one must modify the method as explained in [9].
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