Fixed-regulator test continuity

If $f$ is allowed to vary in $\mathcal{D}(O)$, the maps

are continuous into the smooth compact-kernel spaces on each fixed support stage, and hence in their test-function LF topologies. Indeed, (eq:uone) and (eq:utwo) use only finite differentiation and multiplication by fixed smooth functions on common compact sets.

All estimates are allowed to depend on $\epsilon$. No uniform estimate as $\epsilon$ changes is asserted.