Numbering and downstream admission

We retain the technical-continuation convention adopted in the supplied XV-B manuscript XVB. Thus XV-B and XV-C may study the unresolved construction before admission. The admission success criterion remains

It is a prerequisite for the intended downstream quantum use, not a prerequisite for writing this technical continuation.

The supplied XV-A text uses the earlier convention under which “XV-B remains closed” XVA. That naming convention is not reimposed here. The retained mathematical boundary is that the required quantum coefficient has not been admitted in the supplied releases.