Lean 4 formalization of the contextual structural explainability layer.

Lean 4 formalization of the Evolution Protocol schemas.

Lean 4 formalization of the neutral structural substrate for Structural Explainability, defining admissibility, separation, and substrate invariants independent of identity regimes.

Authoritative specification of Contextual Evidence & Explanations (CEE).

Lean 4 formalization of the Governance Boundary.

Lean 4 formalization of Accountable Entities (AE): six named entity kinds and their mapping to six identity regimes.

Interactive decision tree for classifying objects into Structural Explainability identity and persistence regimes.

Documentation site for Structural Explainability.

Authoritative specification of Structural Explainability (SE).

Lean 4 formalization of the necessary and sufficient identity-and-persistence regimes for neutral accountability substrates.

Authoritative specification of Governance Boundary (GB).

Lean 4 formalization of the contextual structural explainability layer.

Structural Explainability mapping examples for Grade 8 mathematics (CTX -> NOR), including NAEP, CCSS, and international systems, includes validation and coverage matrix generation.

Authoritative specification of Accountable Entities (AE).

Administrative tooling and automation for enforcing Structural Explainability (SE) standards across repositories.

Authoritative specification of the Evolution Protocol (EP).

Lean 4 formalization of the exchange protocol schemas.

Authoritative specification of Interpretation Boundary (IB).

Canonical specification and validation system for Structural Explainability repository classes, dependencies, and constraints.

Lean 4 formalization of Structural Explainability integration, composing substrate and identity regimes into cross-cutting theorems, traceability, and system-level invariants.