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module module moderate

IndisputableMonolith.Physics.RS_PHY_Structural_004

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Structural physics module that packages a nonnegative domain cost functional together with a strictly positive canonical threshold, then wraps both in an inhabited certificate. Physicists citing RS structural claims use it as a named bundle rather than re-proving the two inequalities. The argument is definitional plus elementary positivity from the imported cost layer.

claimDefine a domain cost $C$ with $C \ge 0$ at every admissible point, a canonical threshold $\theta > 0$, and an inhabited certificate packing both facts as the RS structural claim 004 bundle.

background

Recognition Science measures mismatch with a J-cost built from the unique solution of the Recognition Composition Law. The Cost import supplies that cost layer; Constants supplies the RS-native tick $\tau_0 = 1$.

This module sits in the Physics structural series. It introduces a domain-level cost (evaluation of the cost on a structural domain) and a canonical threshold against which that cost is compared. Nonnegativity of the domain cost and positivity of the threshold are the two elementary facts the certificate records.

No forcing-chain step (T5–T8) is re-derived here; the module only freezes the cost/threshold pair into a named, checkable bundle for downstream physics lemmas.

proof idea

Definition module with short positivity lemmas. Domain cost is defined by evaluating the imported cost; equality-at-a-point and nonnegativity are immediate from the Cost API. The canonical threshold is a positive constant (positivity proved by a one-line arithmetic or constant lemma). The certificate structure packs the two propositions; inhabitation is by constructing the pair of proofs.

why it matters in Recognition Science

Gives the Physics layer a single named certificate (structural claim 004) for “domain cost is nonnegative and the canonical threshold is positive.” Downstream consumers can depend on the certificate rather than re-importing Cost and re-proving the two inequalities. No used-by edges are recorded yet, so the module is presently a leaf packaging step inside the structural series, not a forcing-chain landmark (T5 J-uniqueness, T6 $\varphi$, T7 eight-tick, T8 $D=3$).

scope and limits

depends on (2)

Lean names referenced from this declaration's body.

declarations in this module (8)