[see also: decrease, omit, remove, delete, dispense with
Whenever the dimension drops by 1, the rank drops by at most Z.
For brevity, we drop the subscript t on ht.
When there is no ambiguity we drop the dependence on B and write just YT for YT,B.
We show that one can drop an important hypothesis of the saddle point theorem without affecting the result.
Note that we can drop the factor of 1/2 by Lemma 3.
This term drops out when f is differentiated.