UNNS Admissibility-Realizability Pipeline
Chamber XIV-B · Parametric Admissibility · Non-Projecting Shell → Chamber XXXVII · Operator Composability · Admissibility-Realizability Gap
Admissibility Without Projection
Ensemble Realizability
Four-Class Taxonomy
UNNS Research Collective (2026)
Chambers XIV-B and XXXVII together establish the empirical separation between admissibility
and realizability within the UNNS substrate. Chamber XIV-B identifies a robust admissible
shell—localized in μ, invariant under resolution refinement, robust under noise—that persistently
refuses to project despite exhaustive parametric variation. Chamber XXXVII extends this finding
to operator composition, revealing a four-class taxonomy: deterministic (τ), ensemble-realizable (σ),
ensemble-futile (κ, φ), and inadmissible. The discovery that operators can preserve structure in
measure (G₂ = 30%) while never providing compositional benefit (G◦ = 0%) demonstrates that
"can compose" does not imply "should compose", establishing admissibility and realizability
as fundamentally distinct concepts.