bridge

Lean dependency spine

MB7b Filter-family coverage

Declarations: MB7b_filter_family_coverage

From the machine-checked spine in formal/ (core modules are Mathlib-free;Field/Finite/ may import Mathlib). Not self-contained for Lean 4 Web — use the repo or a local lake build.

axiom MB7b_filter_family_coverage :
  ∀ A : System, AccessRobust A → FilterCoverageAdequate A → HiddenBIQBoundedSys A

/-- MB7c: hidden-BIQ-to-adversarial-robustness. If hidden productive BIQ is bounded,
    correction integrity can support adversarial robustness. -/