{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:Y3WBRQR2YRXDT5FSAZQHW5POIN","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"18adfe549cb2e4cc696ed50f6811dbc3f1df4a5d8fb14a4ad33594e09e1d1eb3","cross_cats_sorted":["math.IT"],"license":"","primary_cat":"cs.IT","submitted_at":"2007-12-26T17:50:31Z","title_canon_sha256":"1555ea92de4362b86bf44be2041d4b49e3457f2087187b379ba3b3be5f8958bb"},"schema_version":"1.0","source":{"id":"0712.4135","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0712.4135","created_at":"2026-05-18T00:58:48Z"},{"alias_kind":"arxiv_version","alias_value":"0712.4135v1","created_at":"2026-05-18T00:58:48Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0712.4135","created_at":"2026-05-18T00:58:48Z"},{"alias_kind":"pith_short_12","alias_value":"Y3WBRQR2YRXD","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_16","alias_value":"Y3WBRQR2YRXDT5FS","created_at":"2026-05-18T12:25:56Z"},{"alias_kind":"pith_short_8","alias_value":"Y3WBRQR2","created_at":"2026-05-18T12:25:56Z"}],"graph_snapshots":[{"event_id":"sha256:aa626bd3f1be6f0679250bb3fa4573da54e72898bd471a328239b19f390ea2a6","target":"graph","created_at":"2026-05-18T00:58:48Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"The focus of this paper is an information-theoretic study of retransmission protocols for reliable packet communication under a secrecy constraint. The hybrid automatic retransmission request (HARQ) protocol is revisited for a block-fading wire-tap channel, in which two legitimate users communicate over a block-fading channel in the presence of a passive eavesdropper who intercepts the transmissions through an independent block-fading channel. In this model, the transmitter obtains a 1-bit ACK/NACK feedback from the legitimate receiver via an error-free public channel. Both reliability and con","authors_text":"H. Vincent Poor, Predrag Spasojevic, Ruoheng Liu, Xiaojun Tang","cross_cats":["math.IT"],"headline":"","license":"","primary_cat":"cs.IT","submitted_at":"2007-12-26T17:50:31Z","title":"On the Throughput of Secure Hybrid-ARQ Protocols for Gaussian Block-Fading Channels"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0712.4135","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:e9768a0694c56eb5d1a734def7fccf017d79f2a6dce333f82dbcfb11697d2d9b","target":"record","created_at":"2026-05-18T00:58:48Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"18adfe549cb2e4cc696ed50f6811dbc3f1df4a5d8fb14a4ad33594e09e1d1eb3","cross_cats_sorted":["math.IT"],"license":"","primary_cat":"cs.IT","submitted_at":"2007-12-26T17:50:31Z","title_canon_sha256":"1555ea92de4362b86bf44be2041d4b49e3457f2087187b379ba3b3be5f8958bb"},"schema_version":"1.0","source":{"id":"0712.4135","kind":"arxiv","version":1}},"canonical_sha256":"c6ec18c23ac46e39f4b206607b75ee435d72c7b10173fc24fdbaf817268296ae","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c6ec18c23ac46e39f4b206607b75ee435d72c7b10173fc24fdbaf817268296ae","first_computed_at":"2026-05-18T00:58:48.750165Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:58:48.750165Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"oS9EvfzA/GnoXD4mPbniKS9GZ7vUsXM4gXl6h+JerXxBpOyGKR9sdyf+TmGz64Po1PISNZFJBlGVP33OYLr7AA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:58:48.750695Z","signed_message":"canonical_sha256_bytes"},"source_id":"0712.4135","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e9768a0694c56eb5d1a734def7fccf017d79f2a6dce333f82dbcfb11697d2d9b","sha256:aa626bd3f1be6f0679250bb3fa4573da54e72898bd471a328239b19f390ea2a6"],"state_sha256":"ce6df5107280ad14c01ce69a4cd289a584447dd9ea3d3e5cf1ceb4800d57f0ec"}