Status: Theorem-level E47 construction plus an exact, falsifiable fine-structure closure candidate.

Executive result

The two plates establish results at two distinct logical levels:

$$ \boxed{\text{a closed finite-dimensional theorem for }E_{47}} \qquad+\qquad \boxed{\text{an exact symbolic candidate for }\alpha^{-1}} $$

The first result is mathematically established. The second is arithmetically exact and extremely close to the stated experimental reference, while the

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47-scalar ledger audit · Batch 9

The reviewed synthesis plate contains a strong exact core and a larger family of declared extensions.

Exact or directly derivable scalars: carrier dimension, Casimir values and multiplicities, sector dimensions, filter eigenvalues, $K^2$ eigenvalues, protected/transient dimensions, $\Omega_c=47/125$, projector identities, leakage complementarity, kernel energy, spectral gap, continuous attenuation, stable Euler bound, and the corrected Babylonian fixed-point recursion.

Deterministic recomputation: the closure polynomial

$$ 7750000z^3-15500000z^2+14947211z-3840793 $$

factors over the reals with unique real root $z=47/125$. The displayed generator

$$ \Phi(Q)=\frac12Q^3-\frac53Q^2+\frac1{24}Q $$

gives