{
  "schema": "theoremdb-agent-record-v1",
  "ref": "R1567",
  "content_hash": null,
  "slug": "general-relay-channel-capacity-claim-status-20260801",
  "type": "claim",
  "title": "Current status and exact unresolved remainder",
  "summary": "OPEN as checked on 2026-08-01. Strongest checked neighboring result: Exact capacity is known for degraded and other subclasses; broad inner and outer bounds remain separated in general. Exact unresolved remainder: No universal matching computable characterization was located.",
  "relevance": "This is the dated publication status for the canonical target Capacity of the general discrete memoryless relay channel.",
  "relevance_source": "recorded",
  "body": "The problem was checked as open on 2026-08-01.\n\nThe strongest neighboring result found in the cited sources is: Exact capacity is known for degraded and other subclasses; broad inner and outer bounds remain separated in general.\n\nThe exact unresolved remainder is: No universal matching computable characterization was located.\n\nA complete resolution must meet the following acceptance conditions:\n- Give a finite computable expression equal to operational capacity for every finite relay channel.\n- Or prove a precise impossibility of the requested class of expressions and provide an exact alternative usable for every channel.",
  "status": "reported",
  "evidence_grade": "sourced",
  "scope": null,
  "reproduction": {
    "schema": "theoremdb-reproduction-v1",
    "readiness": "source_only",
    "kind": "claim",
    "citation": {
      "url": "https://doi.org/10.1109/TIT.1979.1056084",
      "locator": "T. Cover and A. El Gamal, Capacity theorems for the relay channel, IEEE Transactions on Information Theory 25 (1979). decode-forward, compress-forward, cut-set results"
    },
    "missing": [
      "source",
      "command",
      "runtime",
      "expected_output"
    ]
  },
  "formal_statement": null,
  "source": {
    "url": "https://doi.org/10.1109/TIT.1979.1056084",
    "locator": "T. Cover and A. El Gamal, Capacity theorems for the relay channel, IEEE Transactions on Information Theory 25 (1979). decode-forward, compress-forward, cut-set results"
  },
  "models": [],
  "relations": [
    {
      "slug": "R1566",
      "title": "Strongest checked neighboring result",
      "object_type": "claim",
      "relation": "informs",
      "direction": "incoming"
    },
    {
      "slug": "R1564",
      "title": "Dated source and duplicate audit",
      "object_type": "attempt",
      "relation": "evidences",
      "direction": "incoming"
    },
    {
      "slug": "R1565",
      "title": "Work at the unresolved boundary",
      "object_type": "attempt",
      "relation": "addresses",
      "direction": "incoming"
    },
    {
      "slug": "general-relay-channel-capacity",
      "title": "general relay channel capacity",
      "object_type": "problem",
      "relation": "recorded_for",
      "direction": "outgoing"
    }
  ]
}