{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2016:2QSUZJJUCQKMNUQ3YX65KU5UOM","short_pith_number":"pith:2QSUZJJU","schema_version":"1.0","canonical_sha256":"d4254ca5341414c6d21bc5fdd553b4731ec0c33a4b17e47098e96c8058a16648","source":{"kind":"arxiv","id":"1607.01739","version":2},"attestation_state":"computed","paper":{"title":"Cohomologie non ramifi\\'ee de degr\\'e 3 : vari\\'et\\'es cellulaires et surfaces de del Pezzo de degr\\'e au moins 5","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.AG","authors_text":"Yang Cao","submitted_at":"2016-07-06T18:52:01Z","abstract_excerpt":"We consider geometrically cellular varieties $X$ over an arbitrary field of characteristic zero. We study the quotient of the third unramified cohomology group $H^3_{nr}(X,\\mathbb{Q}/\\mathbb{Z}(2))$ by its constant part. For $X$ a smooth compactification of a universal torsor over a geometrically rational surface, we show that this quotient if finite. For $X$ a del Pezzo surface of degree $\\geq 5$, we show that this quotient is zero, unless $X$ is a del Pezzo surface of degree 8 of a special type."},"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":"1607.01739","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2016-07-06T18:52:01Z","cross_cats_sorted":[],"title_canon_sha256":"6a2a6476b60bbc51525b61bef2e62b637eab4f1340ba57e05212268a7bc5ebf3","abstract_canon_sha256":"f8da0032caa654a1799334e5d29c1d85b41632724543c8ca328d9f083b5070be"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:20:59.391485Z","signature_b64":"g8Y6YMqx01VAAdxIBcY1r8cIISKUPM5lGbqaAcWCVkDu0gu5HikpV6nZ9ZY1pEjYLqG/DlkyPSZyaPTnRok7Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d4254ca5341414c6d21bc5fdd553b4731ec0c33a4b17e47098e96c8058a16648","last_reissued_at":"2026-05-18T00:20:59.390948Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:20:59.390948Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Cohomologie non ramifi\\'ee de degr\\'e 3 : vari\\'et\\'es cellulaires et surfaces de del Pezzo de degr\\'e au moins 5","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.AG","authors_text":"Yang Cao","submitted_at":"2016-07-06T18:52:01Z","abstract_excerpt":"We consider geometrically cellular varieties $X$ over an arbitrary field of characteristic zero. We study the quotient of the third unramified cohomology group $H^3_{nr}(X,\\mathbb{Q}/\\mathbb{Z}(2))$ by its constant part. For $X$ a smooth compactification of a universal torsor over a geometrically rational surface, we show that this quotient if finite. For $X$ a del Pezzo surface of degree $\\geq 5$, we show that this quotient is zero, unless $X$ is a del Pezzo surface of degree 8 of a special type."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.01739","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1607.01739","created_at":"2026-05-18T00:20:59.391022+00:00"},{"alias_kind":"arxiv_version","alias_value":"1607.01739v2","created_at":"2026-05-18T00:20:59.391022+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.01739","created_at":"2026-05-18T00:20:59.391022+00:00"},{"alias_kind":"pith_short_12","alias_value":"2QSUZJJUCQKM","created_at":"2026-05-18T12:29:55.572404+00:00"},{"alias_kind":"pith_short_16","alias_value":"2QSUZJJUCQKMNUQ3","created_at":"2026-05-18T12:29:55.572404+00:00"},{"alias_kind":"pith_short_8","alias_value":"2QSUZJJU","created_at":"2026-05-18T12:29:55.572404+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/2QSUZJJUCQKMNUQ3YX65KU5UOM","json":"https://pith.science/pith/2QSUZJJUCQKMNUQ3YX65KU5UOM.json","graph_json":"https://pith.science/api/pith-number/2QSUZJJUCQKMNUQ3YX65KU5UOM/graph.json","events_json":"https://pith.science/api/pith-number/2QSUZJJUCQKMNUQ3YX65KU5UOM/events.json","paper":"https://pith.science/paper/2QSUZJJU"},"agent_actions":{"view_html":"https://pith.science/pith/2QSUZJJUCQKMNUQ3YX65KU5UOM","download_json":"https://pith.science/pith/2QSUZJJUCQKMNUQ3YX65KU5UOM.json","view_paper":"https://pith.science/paper/2QSUZJJU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1607.01739&json=true","fetch_graph":"https://pith.science/api/pith-number/2QSUZJJUCQKMNUQ3YX65KU5UOM/graph.json","fetch_events":"https://pith.science/api/pith-number/2QSUZJJUCQKMNUQ3YX65KU5UOM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2QSUZJJUCQKMNUQ3YX65KU5UOM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2QSUZJJUCQKMNUQ3YX65KU5UOM/action/storage_attestation","attest_author":"https://pith.science/pith/2QSUZJJUCQKMNUQ3YX65KU5UOM/action/author_attestation","sign_citation":"https://pith.science/pith/2QSUZJJUCQKMNUQ3YX65KU5UOM/action/citation_signature","submit_replication":"https://pith.science/pith/2QSUZJJUCQKMNUQ3YX65KU5UOM/action/replication_record"}},"created_at":"2026-05-18T00:20:59.391022+00:00","updated_at":"2026-05-18T00:20:59.391022+00:00"}