{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2004:JZYK4XIVMY6YBFMPFMISMMZGZF","short_pith_number":"pith:JZYK4XIV","schema_version":"1.0","canonical_sha256":"4e70ae5d15663d80958f2b11263326c953fc3004b8099148dc6f61a967b83944","source":{"kind":"arxiv","id":"quant-ph/0412177","version":2},"attestation_state":"computed","paper":{"title":"The Computational Power of the W and GHZ states","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ellie D'Hondt, Prakash Panangaden","submitted_at":"2004-12-22T19:50:10Z","abstract_excerpt":"It is well understood that the use of quantum entanglement significantly enhances the computational power of systems. Much of the attention has focused on Bell states and their multipartite generalizations. However, in the multipartite case it is known that there are several inequivalent classes of states, such as those represented by the W-state and the GHZ-state. Our main contribution is a demonstration of the special computational power of these states in the context of paradigmatic problems from classical distributed computing. Concretely, we show that the W-state is the only pure state th"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"quant-ph/0412177","kind":"arxiv","version":2},"metadata":{"license":"","primary_cat":"quant-ph","submitted_at":"2004-12-22T19:50:10Z","cross_cats_sorted":[],"title_canon_sha256":"1e01ed61b4f6a100b240fdd8660473d49bcba4923963ff06997f4f03b2a8b095","abstract_canon_sha256":"f1fba5e67cd081c26e25b2bb2c9977bb9e288e069ea8e93d4eae15469aee737b"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T14:50:17.970690Z","signature_b64":"4GEHkMM/PfB+qxHaRlaNf7hW9z1OajtvOa9kxdISyOM8+AvVLQ2y+3rbbn7PUJ0+zXLcuCdWA5TqQqAqtNgvBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4e70ae5d15663d80958f2b11263326c953fc3004b8099148dc6f61a967b83944","last_reissued_at":"2026-07-04T14:50:17.970218Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T14:50:17.970218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"The Computational Power of the W and GHZ states","license":"","headline":"","cross_cats":[],"primary_cat":"quant-ph","authors_text":"Ellie D'Hondt, Prakash Panangaden","submitted_at":"2004-12-22T19:50:10Z","abstract_excerpt":"It is well understood that the use of quantum entanglement significantly enhances the computational power of systems. Much of the attention has focused on Bell states and their multipartite generalizations. However, in the multipartite case it is known that there are several inequivalent classes of states, such as those represented by the W-state and the GHZ-state. Our main contribution is a demonstration of the special computational power of these states in the context of paradigmatic problems from classical distributed computing. Concretely, we show that the W-state is the only pure state th"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"quant-ph/0412177","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/quant-ph/0412177/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"quant-ph/0412177","created_at":"2026-07-04T14:50:17.970282+00:00"},{"alias_kind":"arxiv_version","alias_value":"quant-ph/0412177v2","created_at":"2026-07-04T14:50:17.970282+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.quant-ph/0412177","created_at":"2026-07-04T14:50:17.970282+00:00"},{"alias_kind":"pith_short_12","alias_value":"JZYK4XIVMY6Y","created_at":"2026-07-04T14:50:17.970282+00:00"},{"alias_kind":"pith_short_16","alias_value":"JZYK4XIVMY6YBFMP","created_at":"2026-07-04T14:50:17.970282+00:00"},{"alias_kind":"pith_short_8","alias_value":"JZYK4XIV","created_at":"2026-07-04T14:50:17.970282+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/JZYK4XIVMY6YBFMPFMISMMZGZF","json":"https://pith.science/pith/JZYK4XIVMY6YBFMPFMISMMZGZF.json","graph_json":"https://pith.science/api/pith-number/JZYK4XIVMY6YBFMPFMISMMZGZF/graph.json","events_json":"https://pith.science/api/pith-number/JZYK4XIVMY6YBFMPFMISMMZGZF/events.json","paper":"https://pith.science/paper/JZYK4XIV"},"agent_actions":{"view_html":"https://pith.science/pith/JZYK4XIVMY6YBFMPFMISMMZGZF","download_json":"https://pith.science/pith/JZYK4XIVMY6YBFMPFMISMMZGZF.json","view_paper":"https://pith.science/paper/JZYK4XIV","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=quant-ph/0412177&json=true","fetch_graph":"https://pith.science/api/pith-number/JZYK4XIVMY6YBFMPFMISMMZGZF/graph.json","fetch_events":"https://pith.science/api/pith-number/JZYK4XIVMY6YBFMPFMISMMZGZF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JZYK4XIVMY6YBFMPFMISMMZGZF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JZYK4XIVMY6YBFMPFMISMMZGZF/action/storage_attestation","attest_author":"https://pith.science/pith/JZYK4XIVMY6YBFMPFMISMMZGZF/action/author_attestation","sign_citation":"https://pith.science/pith/JZYK4XIVMY6YBFMPFMISMMZGZF/action/citation_signature","submit_replication":"https://pith.science/pith/JZYK4XIVMY6YBFMPFMISMMZGZF/action/replication_record"}},"created_at":"2026-07-04T14:50:17.970282+00:00","updated_at":"2026-07-04T14:50:17.970282+00:00"}