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First page of Zero-Error Recovery under Deterministic Partial Views: Matroid Bounds and Verifiable Realizability

Zero-Error Recovery under Deterministic Partial Views: Matroid Bounds and Verifiable Realizability

Tristan Simas

cs.IT Feb 26, 2026 · v1
All cited zero-error recovery and matroid-bound results are mechanized in Lean 4 against a shared formalization library.
Zero-error recovery under deterministic partial views is graph recovery for the induced confusability relation. A finite family of coordinate-subset observations determines a graph on latent states; $T$-ary exact recovery is graph $T$-colorability, block composition is strong powering, and asymptotic recoverability is Shannon capacity. Coordinate structure gives tractable certificates inside the graph semantics. For affine realized state families with explicit linear presentations, restricted coordinate ranks form a representable matroid certificate giving polynomial-time upper bounds on one-shot confusability and asymptotic capacity, with rank additivity matching direct-sum block composition. In the full tuple-space coordinate model, the realizable confusability relations are exactly the upward-closed coordinate-agreement families. Transitive confusability is equivalent to intersection closure of the generated agreement family, yielding a cluster graph whose capacity is determined by connected components. Host-level realizability determines when the latent state family is canonical. Verifiable rate-$1$ realizability for structural facts holds if and only if the host provides zero-delay synchronization and structural side-information; eleven representative host architectures instantiate the criterion. The same clique-size bit-budget bound governs both the graph-level and host-level layers. All cited results are mechanized in Lean 4 against a shared formalization library.

Zero-error recovery under deterministic partial views requires determining when latent states can be distinguished from coordinate-subset observations. Computing Shannon capacity and one-shot recovery bounds for the induced confusability graph is generally intractable.

The authors develop a graph-theoretic framework where coordinate-subset observations induce a confusability graph on latent states, with T-ary exact recovery equivalent to graph T-colorability and asymptotic recoverability linked to Shannon capacity. For affine realized state families with explicit linear presentations, restricted coordinate ranks form a representable matroid certificate giving polynomial-time upper bounds. The paper characterizes transitive confusability as intersection closure yielding cluster graphs, and establishes host-level realizability criteria. All results are mechanized in Lean 4 against a shared formalization library.

Eleven representative host architectures instantiate the realizability criterion. The matroid rank additivity matches direct-sum block composition, and the same clique-size bit-budget bound governs both graph-level and host-level layers.