{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:EJJX65GZ6LCCRFZF4N7PUKHZN4","short_pith_number":"pith:EJJX65GZ","schema_version":"1.0","canonical_sha256":"22537f74d9f2c4289725e37efa28f96f0095cabf21ad39b763b0a1d4352601e9","source":{"kind":"arxiv","id":"1012.4120","version":1},"attestation_state":"computed","paper":{"title":"A homology plane of general type can have at most a cyclic quotient singularity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.AG","authors_text":"M. Koras, M. Miyanishi, P. Russell, R.V. Gurjar","submitted_at":"2010-12-18T20:54:51Z","abstract_excerpt":"We show that a homology plane of general type has at worst a single cyclic quotient singular point. An example of such a surface with a singular point does exist. We also show that the automorphism group of a smooth contractible surface of general type is cyclic."},"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":"1012.4120","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.AG","submitted_at":"2010-12-18T20:54:51Z","cross_cats_sorted":[],"title_canon_sha256":"66b4be61ff12831b0e22d5caea9222f41908fe2d04bb2936ed436c18b5450e11","abstract_canon_sha256":"443be5cee6f23397f68ccd95db17329565d4dd27b6dc6b1457d40d1060473eb3"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:32:55.418822Z","signature_b64":"yoaX7aNfDSMyTLw1ZCii8ZocTfOwLkTpvCDrb9B1x8JY2YQYEZmGLddVODhtUhPr7H7yCH8+tQGJOt7asj0YAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"22537f74d9f2c4289725e37efa28f96f0095cabf21ad39b763b0a1d4352601e9","last_reissued_at":"2026-05-18T04:32:55.418414Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:32:55.418414Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A homology plane of general type can have at most a cyclic quotient singularity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.AG","authors_text":"M. Koras, M. Miyanishi, P. Russell, R.V. Gurjar","submitted_at":"2010-12-18T20:54:51Z","abstract_excerpt":"We show that a homology plane of general type has at worst a single cyclic quotient singular point. An example of such a surface with a singular point does exist. We also show that the automorphism group of a smooth contractible surface of general type is cyclic."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.4120","kind":"arxiv","version":1},"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":"1012.4120","created_at":"2026-05-18T04:32:55.418470+00:00"},{"alias_kind":"arxiv_version","alias_value":"1012.4120v1","created_at":"2026-05-18T04:32:55.418470+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.4120","created_at":"2026-05-18T04:32:55.418470+00:00"},{"alias_kind":"pith_short_12","alias_value":"EJJX65GZ6LCC","created_at":"2026-05-18T12:26:06.534383+00:00"},{"alias_kind":"pith_short_16","alias_value":"EJJX65GZ6LCCRFZF","created_at":"2026-05-18T12:26:06.534383+00:00"},{"alias_kind":"pith_short_8","alias_value":"EJJX65GZ","created_at":"2026-05-18T12:26:06.534383+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/EJJX65GZ6LCCRFZF4N7PUKHZN4","json":"https://pith.science/pith/EJJX65GZ6LCCRFZF4N7PUKHZN4.json","graph_json":"https://pith.science/api/pith-number/EJJX65GZ6LCCRFZF4N7PUKHZN4/graph.json","events_json":"https://pith.science/api/pith-number/EJJX65GZ6LCCRFZF4N7PUKHZN4/events.json","paper":"https://pith.science/paper/EJJX65GZ"},"agent_actions":{"view_html":"https://pith.science/pith/EJJX65GZ6LCCRFZF4N7PUKHZN4","download_json":"https://pith.science/pith/EJJX65GZ6LCCRFZF4N7PUKHZN4.json","view_paper":"https://pith.science/paper/EJJX65GZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1012.4120&json=true","fetch_graph":"https://pith.science/api/pith-number/EJJX65GZ6LCCRFZF4N7PUKHZN4/graph.json","fetch_events":"https://pith.science/api/pith-number/EJJX65GZ6LCCRFZF4N7PUKHZN4/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/EJJX65GZ6LCCRFZF4N7PUKHZN4/action/timestamp_anchor","attest_storage":"https://pith.science/pith/EJJX65GZ6LCCRFZF4N7PUKHZN4/action/storage_attestation","attest_author":"https://pith.science/pith/EJJX65GZ6LCCRFZF4N7PUKHZN4/action/author_attestation","sign_citation":"https://pith.science/pith/EJJX65GZ6LCCRFZF4N7PUKHZN4/action/citation_signature","submit_replication":"https://pith.science/pith/EJJX65GZ6LCCRFZF4N7PUKHZN4/action/replication_record"}},"created_at":"2026-05-18T04:32:55.418470+00:00","updated_at":"2026-05-18T04:32:55.418470+00:00"}