Definition: Supported presentation

Fix $Z>0$. The geometric presentation is the finite sector atlas on

together with its prescribed exterior and its stipulated conical stratum. It is compact in the spatial completion and is not a single regular chart.

The operational laboratory is a relatively compact regular tube with closure disjoint from $\mathcal{W}$, containing all installed register ports, local gates, and communication paths. All preparations, ancillary inputs, and controller data are declared at the initial boundary. There is no undeclared incoming boundary input.

No Green operator, field propagation problem, or boundary-value evolution is constructed.