A Profile is a complete relational universe inside the larger one, carved out by a Filter.
A Filter commutes with all Flows and all Nuclei, so what it carves out inherits the full structure of the larger field: Terms, Judgements, Order, Flow, Nucleus, Geometry — the whole tower, reconstructed internally. A Profile is a nested relational universe whose recognitions remain stable under combined flow-and-nucleus dynamics.
Within a Profile, the entire derivation reconstructs itself. The same sequence that produced the full field plays out internally.
Profiles nest: applying a Filter within a Profile yields a sub-Profile, which also contains the full tower. This nesting is indefinite.
Geometry acts on the contents of Profiles, producing physics: Observable, State, Evolution, Measurement.