{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:M2KIFSAKER43G4G3N2VFTQXBEL","short_pith_number":"pith:M2KIFSAK","canonical_record":{"source":{"id":"0901.4913","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.DG","submitted_at":"2009-01-30T15:33:51Z","cross_cats_sorted":[],"title_canon_sha256":"acc40fa4a58da3140d06f1b78134ae09d29ab67ba56a71f21937f2f9e5fb3519","abstract_canon_sha256":"b838234f397fff040c9e37b37739c967373da1d789b56770a74a1d652e852fd2"},"schema_version":"1.0"},"canonical_sha256":"669482c80a2479b370db6eaa59c2e122ca04a064cfb5ad3518fc54a4e4ec67f3","source":{"kind":"arxiv","id":"0901.4913","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0901.4913","created_at":"2026-05-18T02:14:54Z"},{"alias_kind":"arxiv_version","alias_value":"0901.4913v1","created_at":"2026-05-18T02:14:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.4913","created_at":"2026-05-18T02:14:54Z"},{"alias_kind":"pith_short_12","alias_value":"M2KIFSAKER43","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"M2KIFSAKER43G4G3","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"M2KIFSAK","created_at":"2026-05-18T12:26:00Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:M2KIFSAKER43G4G3N2VFTQXBEL","target":"record","payload":{"canonical_record":{"source":{"id":"0901.4913","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.DG","submitted_at":"2009-01-30T15:33:51Z","cross_cats_sorted":[],"title_canon_sha256":"acc40fa4a58da3140d06f1b78134ae09d29ab67ba56a71f21937f2f9e5fb3519","abstract_canon_sha256":"b838234f397fff040c9e37b37739c967373da1d789b56770a74a1d652e852fd2"},"schema_version":"1.0"},"canonical_sha256":"669482c80a2479b370db6eaa59c2e122ca04a064cfb5ad3518fc54a4e4ec67f3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:54.901885Z","signature_b64":"It+fzhRk8wNnBlLGLgKC+XLZnjXdM42q4Tj4IQm+77zyDeWfvYEaYMoYApbA5Yd4jxlgjwQ5JFoUd2kPf9TIAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"669482c80a2479b370db6eaa59c2e122ca04a064cfb5ad3518fc54a4e4ec67f3","last_reissued_at":"2026-05-18T02:14:54.901281Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:54.901281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0901.4913","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:14:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3dBN9dcg9xykI5800q2A1V9TUgPsZSxaQW+hqJBgqsYFlagrttdAN77HusO/Nzl7fBWv823e7E+6IMcv3vj8BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T11:38:55.005898Z"},"content_sha256":"dffa6ea039226eb793a3d9655345ff23c240d95fb6c4ffb07157b8138cbb4363","schema_version":"1.0","event_id":"sha256:dffa6ea039226eb793a3d9655345ff23c240d95fb6c4ffb07157b8138cbb4363"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:M2KIFSAKER43G4G3N2VFTQXBEL","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Self Dual Einstein Orbifolds with Few Symmetries as Quaternion Kaehler Quotients","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.DG","authors_text":"Luca Bisconti, Paolo Piccinni","submitted_at":"2009-01-30T15:33:51Z","abstract_excerpt":"We construct a new family of compact orbifolds with a positive self dual Einstein metric and a one-dimensional group of isometries. Together with another known family, these examples classify all 4-dimensional orbifolds that are quaternion Kaehler quotients by a torus of real Grassmannians."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.4913","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:14:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ekjG37/tJ7sR6owzIqxeFlBcWYstpxMz6SqRViYVdgrXtUPX1yIPXrZpuRIDFOUnqkhj7alk10qUUeSbUVEqBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T11:38:55.006246Z"},"content_sha256":"9a8b25652b5a05142eff69868ab577048cb34501248436b12fce413d097f3926","schema_version":"1.0","event_id":"sha256:9a8b25652b5a05142eff69868ab577048cb34501248436b12fce413d097f3926"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/M2KIFSAKER43G4G3N2VFTQXBEL/bundle.json","state_url":"https://pith.science/pith/M2KIFSAKER43G4G3N2VFTQXBEL/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/M2KIFSAKER43G4G3N2VFTQXBEL/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":"2026-06-05T11:38:55Z","links":{"resolver":"https://pith.science/pith/M2KIFSAKER43G4G3N2VFTQXBEL","bundle":"https://pith.science/pith/M2KIFSAKER43G4G3N2VFTQXBEL/bundle.json","state":"https://pith.science/pith/M2KIFSAKER43G4G3N2VFTQXBEL/state.json","well_known_bundle":"https://pith.science/.well-known/pith/M2KIFSAKER43G4G3N2VFTQXBEL/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:M2KIFSAKER43G4G3N2VFTQXBEL","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":"b838234f397fff040c9e37b37739c967373da1d789b56770a74a1d652e852fd2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.DG","submitted_at":"2009-01-30T15:33:51Z","title_canon_sha256":"acc40fa4a58da3140d06f1b78134ae09d29ab67ba56a71f21937f2f9e5fb3519"},"schema_version":"1.0","source":{"id":"0901.4913","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0901.4913","created_at":"2026-05-18T02:14:54Z"},{"alias_kind":"arxiv_version","alias_value":"0901.4913v1","created_at":"2026-05-18T02:14:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0901.4913","created_at":"2026-05-18T02:14:54Z"},{"alias_kind":"pith_short_12","alias_value":"M2KIFSAKER43","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_16","alias_value":"M2KIFSAKER43G4G3","created_at":"2026-05-18T12:26:00Z"},{"alias_kind":"pith_short_8","alias_value":"M2KIFSAK","created_at":"2026-05-18T12:26:00Z"}],"graph_snapshots":[{"event_id":"sha256:9a8b25652b5a05142eff69868ab577048cb34501248436b12fce413d097f3926","target":"graph","created_at":"2026-05-18T02:14:54Z","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":"We construct a new family of compact orbifolds with a positive self dual Einstein metric and a one-dimensional group of isometries. Together with another known family, these examples classify all 4-dimensional orbifolds that are quaternion Kaehler quotients by a torus of real Grassmannians.","authors_text":"Luca Bisconti, Paolo Piccinni","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.DG","submitted_at":"2009-01-30T15:33:51Z","title":"Self Dual Einstein Orbifolds with Few Symmetries as Quaternion Kaehler Quotients"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0901.4913","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:dffa6ea039226eb793a3d9655345ff23c240d95fb6c4ffb07157b8138cbb4363","target":"record","created_at":"2026-05-18T02:14:54Z","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":"b838234f397fff040c9e37b37739c967373da1d789b56770a74a1d652e852fd2","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.DG","submitted_at":"2009-01-30T15:33:51Z","title_canon_sha256":"acc40fa4a58da3140d06f1b78134ae09d29ab67ba56a71f21937f2f9e5fb3519"},"schema_version":"1.0","source":{"id":"0901.4913","kind":"arxiv","version":1}},"canonical_sha256":"669482c80a2479b370db6eaa59c2e122ca04a064cfb5ad3518fc54a4e4ec67f3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"669482c80a2479b370db6eaa59c2e122ca04a064cfb5ad3518fc54a4e4ec67f3","first_computed_at":"2026-05-18T02:14:54.901281Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:14:54.901281Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"It+fzhRk8wNnBlLGLgKC+XLZnjXdM42q4Tj4IQm+77zyDeWfvYEaYMoYApbA5Yd4jxlgjwQ5JFoUd2kPf9TIAw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:14:54.901885Z","signed_message":"canonical_sha256_bytes"},"source_id":"0901.4913","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dffa6ea039226eb793a3d9655345ff23c240d95fb6c4ffb07157b8138cbb4363","sha256:9a8b25652b5a05142eff69868ab577048cb34501248436b12fce413d097f3926"],"state_sha256":"4e676a15eff8c395f3173e13e05f7f5339e8ebc0faca57124e37fcd20071232f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eRNkmJaqylgdKBuyVFdzgoA+fGaGBOz1FbNZK/CbZ7Z1ZRp5YwPN5K5XIga7qGhTFjPX7kkcjTh5DCXu9+QZBw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T11:38:55.008292Z","bundle_sha256":"f0ab946da5cff03c699c3fa5b021a7415646a51f45031fadae47ed12f586f0fb"}}