{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:RIACVB5SNZIN6GNYX6VDTGZPFE","short_pith_number":"pith:RIACVB5S","canonical_record":{"source":{"id":"1203.4968","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-03-22T11:58:15Z","cross_cats_sorted":[],"title_canon_sha256":"57bb63b6578c363d05a01f66ee528de69cd77f72ed5419e3d613348a7784c202","abstract_canon_sha256":"c97f10a26668962e1f40bbe7cd8cb837bd327ce97965e5b0a992f1788f8c3634"},"schema_version":"1.0"},"canonical_sha256":"8a002a87b26e50df19b8bfaa399b2f2906486726a96446a8718455c01c76be61","source":{"kind":"arxiv","id":"1203.4968","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.4968","created_at":"2026-05-18T03:23:11Z"},{"alias_kind":"arxiv_version","alias_value":"1203.4968v2","created_at":"2026-05-18T03:23:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.4968","created_at":"2026-05-18T03:23:11Z"},{"alias_kind":"pith_short_12","alias_value":"RIACVB5SNZIN","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RIACVB5SNZIN6GNY","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RIACVB5S","created_at":"2026-05-18T12:27:20Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:RIACVB5SNZIN6GNYX6VDTGZPFE","target":"record","payload":{"canonical_record":{"source":{"id":"1203.4968","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-03-22T11:58:15Z","cross_cats_sorted":[],"title_canon_sha256":"57bb63b6578c363d05a01f66ee528de69cd77f72ed5419e3d613348a7784c202","abstract_canon_sha256":"c97f10a26668962e1f40bbe7cd8cb837bd327ce97965e5b0a992f1788f8c3634"},"schema_version":"1.0"},"canonical_sha256":"8a002a87b26e50df19b8bfaa399b2f2906486726a96446a8718455c01c76be61","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:23:11.380147Z","signature_b64":"k+yiy2SFedgWuy3YPBI8EW096zvnDv1ByJIazWo/ik4j3aVkS4HC8issXrVo/mUvqKo9bGTpmDUzn2asGKWWBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8a002a87b26e50df19b8bfaa399b2f2906486726a96446a8718455c01c76be61","last_reissued_at":"2026-05-18T03:23:11.379636Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:23:11.379636Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1203.4968","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:23:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gVD1ZZkOEpQRWcY+kUQEx91a3xDej0zPcRi5hUs5SErvJ2A+RpIcS9olwW6qt20QC2euCyI6RRQOt8rEIBPKAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:19:43.105211Z"},"content_sha256":"12e0692e87b3f00a200380923be590cb06e88114a5a10be8b779f35c54ccfd99","schema_version":"1.0","event_id":"sha256:12e0692e87b3f00a200380923be590cb06e88114a5a10be8b779f35c54ccfd99"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:RIACVB5SNZIN6GNYX6VDTGZPFE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Useful multipartite correlations from useless reduced states","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Antonio Ac\\'in, Jean-Daniel Bancal, Lars Erik W\\\"urflinger, Nicolas Gisin, Tamas Vertesi","submitted_at":"2012-03-22T11:58:15Z","abstract_excerpt":"Understanding what can be inferred about a multi-particle quantum system from only the knowledge of its subparts is a highly non-trivial task. Clearly, if the global system doesn't contain any information resource, nor do its subparts. However, is the converse also true? We show that the answer to is negative. We provide three two-qubit states that are non-entangled, but such that any three-qubit state compatible with them is entangled. Entanglement can thus be deduced from the mere observation of separable reduced states. We extend this finding to correlations and provide local marginal corre"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.4968","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:23:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gSfjSa9FvTyDMZvfyhnp+K1CDZxx9WPPhkYk1Ezx63kboaJPQCcLMDhHgRbC5txc47tfbsdjjxZ6KE9n2EnEAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T14:19:43.105877Z"},"content_sha256":"a2e0465b4713ee0b45b61e11dd61860f12136fa2f33049007d0989b8b20b016c","schema_version":"1.0","event_id":"sha256:a2e0465b4713ee0b45b61e11dd61860f12136fa2f33049007d0989b8b20b016c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RIACVB5SNZIN6GNYX6VDTGZPFE/bundle.json","state_url":"https://pith.science/pith/RIACVB5SNZIN6GNYX6VDTGZPFE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RIACVB5SNZIN6GNYX6VDTGZPFE/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-02T14:19:43Z","links":{"resolver":"https://pith.science/pith/RIACVB5SNZIN6GNYX6VDTGZPFE","bundle":"https://pith.science/pith/RIACVB5SNZIN6GNYX6VDTGZPFE/bundle.json","state":"https://pith.science/pith/RIACVB5SNZIN6GNYX6VDTGZPFE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RIACVB5SNZIN6GNYX6VDTGZPFE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:RIACVB5SNZIN6GNYX6VDTGZPFE","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":"c97f10a26668962e1f40bbe7cd8cb837bd327ce97965e5b0a992f1788f8c3634","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-03-22T11:58:15Z","title_canon_sha256":"57bb63b6578c363d05a01f66ee528de69cd77f72ed5419e3d613348a7784c202"},"schema_version":"1.0","source":{"id":"1203.4968","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1203.4968","created_at":"2026-05-18T03:23:11Z"},{"alias_kind":"arxiv_version","alias_value":"1203.4968v2","created_at":"2026-05-18T03:23:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1203.4968","created_at":"2026-05-18T03:23:11Z"},{"alias_kind":"pith_short_12","alias_value":"RIACVB5SNZIN","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_16","alias_value":"RIACVB5SNZIN6GNY","created_at":"2026-05-18T12:27:20Z"},{"alias_kind":"pith_short_8","alias_value":"RIACVB5S","created_at":"2026-05-18T12:27:20Z"}],"graph_snapshots":[{"event_id":"sha256:a2e0465b4713ee0b45b61e11dd61860f12136fa2f33049007d0989b8b20b016c","target":"graph","created_at":"2026-05-18T03:23:11Z","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":"Understanding what can be inferred about a multi-particle quantum system from only the knowledge of its subparts is a highly non-trivial task. Clearly, if the global system doesn't contain any information resource, nor do its subparts. However, is the converse also true? We show that the answer to is negative. We provide three two-qubit states that are non-entangled, but such that any three-qubit state compatible with them is entangled. Entanglement can thus be deduced from the mere observation of separable reduced states. We extend this finding to correlations and provide local marginal corre","authors_text":"Antonio Ac\\'in, Jean-Daniel Bancal, Lars Erik W\\\"urflinger, Nicolas Gisin, Tamas Vertesi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-03-22T11:58:15Z","title":"Useful multipartite correlations from useless reduced states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.4968","kind":"arxiv","version":2},"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":"sha256:12e0692e87b3f00a200380923be590cb06e88114a5a10be8b779f35c54ccfd99","target":"record","created_at":"2026-05-18T03:23:11Z","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":"c97f10a26668962e1f40bbe7cd8cb837bd327ce97965e5b0a992f1788f8c3634","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"quant-ph","submitted_at":"2012-03-22T11:58:15Z","title_canon_sha256":"57bb63b6578c363d05a01f66ee528de69cd77f72ed5419e3d613348a7784c202"},"schema_version":"1.0","source":{"id":"1203.4968","kind":"arxiv","version":2}},"canonical_sha256":"8a002a87b26e50df19b8bfaa399b2f2906486726a96446a8718455c01c76be61","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8a002a87b26e50df19b8bfaa399b2f2906486726a96446a8718455c01c76be61","first_computed_at":"2026-05-18T03:23:11.379636Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:23:11.379636Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"k+yiy2SFedgWuy3YPBI8EW096zvnDv1ByJIazWo/ik4j3aVkS4HC8issXrVo/mUvqKo9bGTpmDUzn2asGKWWBA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:23:11.380147Z","signed_message":"canonical_sha256_bytes"},"source_id":"1203.4968","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:12e0692e87b3f00a200380923be590cb06e88114a5a10be8b779f35c54ccfd99","sha256:a2e0465b4713ee0b45b61e11dd61860f12136fa2f33049007d0989b8b20b016c"],"state_sha256":"b74c223dad095bb8dd5d33c09fdac9dc1afec4512218d3bc1fd278c109de6d9c"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KIMdKnrUlBtmINKO9mpPb+zyudNVm6ECgyy1OImpsFiX8tqh5Eyzr1VlysU57lm6xl0YYk6erpDWj8h3c6nUCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T14:19:43.109112Z","bundle_sha256":"ba83866b7443f685269503ce21f230de6b278bc442919952a52d315090778b64"}}