{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:QQQ3NXE4WJ2X6P2PAN75K34JYZ","short_pith_number":"pith:QQQ3NXE4","canonical_record":{"source":{"id":"1804.01519","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-04T17:45:02Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"ff3868d6ab0d64344b79108c6580f1acac079afd46a6f7789d56964dd0c59a8d","abstract_canon_sha256":"6537a288d18c0c21b9c54aa8373b832e642a20bebb35fd3c11474c9e4c744241"},"schema_version":"1.0"},"canonical_sha256":"8421b6dc9cb2757f3f4f037fd56f89c67541ca0f9c420366da063cebe7507f85","source":{"kind":"arxiv","id":"1804.01519","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.01519","created_at":"2026-07-05T03:03:23Z"},{"alias_kind":"arxiv_version","alias_value":"1804.01519v1","created_at":"2026-07-05T03:03:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.01519","created_at":"2026-07-05T03:03:23Z"},{"alias_kind":"pith_short_12","alias_value":"QQQ3NXE4WJ2X","created_at":"2026-07-05T03:03:23Z"},{"alias_kind":"pith_short_16","alias_value":"QQQ3NXE4WJ2X6P2P","created_at":"2026-07-05T03:03:23Z"},{"alias_kind":"pith_short_8","alias_value":"QQQ3NXE4","created_at":"2026-07-05T03:03:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:QQQ3NXE4WJ2X6P2PAN75K34JYZ","target":"record","payload":{"canonical_record":{"source":{"id":"1804.01519","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-04T17:45:02Z","cross_cats_sorted":["hep-th"],"title_canon_sha256":"ff3868d6ab0d64344b79108c6580f1acac079afd46a6f7789d56964dd0c59a8d","abstract_canon_sha256":"6537a288d18c0c21b9c54aa8373b832e642a20bebb35fd3c11474c9e4c744241"},"schema_version":"1.0"},"canonical_sha256":"8421b6dc9cb2757f3f4f037fd56f89c67541ca0f9c420366da063cebe7507f85","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:03:23.574990Z","signature_b64":"3kU9nr/3Qnko2H50HfCFJV9eviVYkCrnVo8jCdM6UkX/dYWHpZDpGItvRQmOqPWjTSzj2Go7iDEUMnxS9p65CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8421b6dc9cb2757f3f4f037fd56f89c67541ca0f9c420366da063cebe7507f85","last_reissued_at":"2026-07-05T03:03:23.574551Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:03:23.574551Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1804.01519","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":"2026-07-05T03:03:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dHZdigGS+RA+PoFEcHeepWCsfGSFVKNBqpQbYjwQYrm6GNG0LPGAEdBiW254x0AEuiO3F8+I2x0VUe5klVuYBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T02:16:29.800929Z"},"content_sha256":"dc830314e5ba475f5b115c28166f45e201a33d9b1b6e1aca0f3d77b2ed9d7c72","schema_version":"1.0","event_id":"sha256:dc830314e5ba475f5b115c28166f45e201a33d9b1b6e1aca0f3d77b2ed9d7c72"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:QQQ3NXE4WJ2X6P2PAN75K34JYZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Non-expanding Plebanski-Demianski space-times","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-th"],"primary_cat":"gr-qc","authors_text":"Jerry B. Griffiths, Jiri Podolsky, Ondrej Hruska","submitted_at":"2018-04-04T17:45:02Z","abstract_excerpt":"The aim of this work is to describe the complete family of non-expanding Plebanski-Demianski type D space-times and to present their possible interpretation. We explicitly express the most general form of such (electro)vacuum solutions with any cosmological constant, and we investigate the geometrical and physical meaning of the seven parameters they contain. We present various metric forms, and by analyzing the corresponding coordinates in the weak-field limit we elucidate the global structure of these space-times, such as the character of possible singularities. We also demonstrate that memb"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.01519","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1804.01519/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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T03:03:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cW+y5/dmtOzRccSdj73diT+1vI04g4MNPln1HUHv0zqBZETma1kGm3r5exvpntGwzWZUaGTnpyu1OxuOy+9PBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-06T02:16:29.801567Z"},"content_sha256":"e31cf2071553fd2266cf27e8525f8926e610da6844df776716d060ad99f15cb5","schema_version":"1.0","event_id":"sha256:e31cf2071553fd2266cf27e8525f8926e610da6844df776716d060ad99f15cb5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QQQ3NXE4WJ2X6P2PAN75K34JYZ/bundle.json","state_url":"https://pith.science/pith/QQQ3NXE4WJ2X6P2PAN75K34JYZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QQQ3NXE4WJ2X6P2PAN75K34JYZ/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":"2026-08-06T02:16:29Z","links":{"resolver":"https://pith.science/pith/QQQ3NXE4WJ2X6P2PAN75K34JYZ","bundle":"https://pith.science/pith/QQQ3NXE4WJ2X6P2PAN75K34JYZ/bundle.json","state":"https://pith.science/pith/QQQ3NXE4WJ2X6P2PAN75K34JYZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QQQ3NXE4WJ2X6P2PAN75K34JYZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:QQQ3NXE4WJ2X6P2PAN75K34JYZ","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":"6537a288d18c0c21b9c54aa8373b832e642a20bebb35fd3c11474c9e4c744241","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-04T17:45:02Z","title_canon_sha256":"ff3868d6ab0d64344b79108c6580f1acac079afd46a6f7789d56964dd0c59a8d"},"schema_version":"1.0","source":{"id":"1804.01519","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.01519","created_at":"2026-07-05T03:03:23Z"},{"alias_kind":"arxiv_version","alias_value":"1804.01519v1","created_at":"2026-07-05T03:03:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.01519","created_at":"2026-07-05T03:03:23Z"},{"alias_kind":"pith_short_12","alias_value":"QQQ3NXE4WJ2X","created_at":"2026-07-05T03:03:23Z"},{"alias_kind":"pith_short_16","alias_value":"QQQ3NXE4WJ2X6P2P","created_at":"2026-07-05T03:03:23Z"},{"alias_kind":"pith_short_8","alias_value":"QQQ3NXE4","created_at":"2026-07-05T03:03:23Z"}],"graph_snapshots":[{"event_id":"sha256:e31cf2071553fd2266cf27e8525f8926e610da6844df776716d060ad99f15cb5","target":"graph","created_at":"2026-07-05T03:03:23Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/1804.01519/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The aim of this work is to describe the complete family of non-expanding Plebanski-Demianski type D space-times and to present their possible interpretation. We explicitly express the most general form of such (electro)vacuum solutions with any cosmological constant, and we investigate the geometrical and physical meaning of the seven parameters they contain. We present various metric forms, and by analyzing the corresponding coordinates in the weak-field limit we elucidate the global structure of these space-times, such as the character of possible singularities. We also demonstrate that memb","authors_text":"Jerry B. Griffiths, Jiri Podolsky, Ondrej Hruska","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-04T17:45:02Z","title":"Non-expanding Plebanski-Demianski space-times"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.01519","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:dc830314e5ba475f5b115c28166f45e201a33d9b1b6e1aca0f3d77b2ed9d7c72","target":"record","created_at":"2026-07-05T03:03:23Z","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":"6537a288d18c0c21b9c54aa8373b832e642a20bebb35fd3c11474c9e4c744241","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-04-04T17:45:02Z","title_canon_sha256":"ff3868d6ab0d64344b79108c6580f1acac079afd46a6f7789d56964dd0c59a8d"},"schema_version":"1.0","source":{"id":"1804.01519","kind":"arxiv","version":1}},"canonical_sha256":"8421b6dc9cb2757f3f4f037fd56f89c67541ca0f9c420366da063cebe7507f85","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8421b6dc9cb2757f3f4f037fd56f89c67541ca0f9c420366da063cebe7507f85","first_computed_at":"2026-07-05T03:03:23.574551Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:03:23.574551Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3kU9nr/3Qnko2H50HfCFJV9eviVYkCrnVo8jCdM6UkX/dYWHpZDpGItvRQmOqPWjTSzj2Go7iDEUMnxS9p65CQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:03:23.574990Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.01519","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dc830314e5ba475f5b115c28166f45e201a33d9b1b6e1aca0f3d77b2ed9d7c72","sha256:e31cf2071553fd2266cf27e8525f8926e610da6844df776716d060ad99f15cb5"],"state_sha256":"a3e3c532b38802a69e0b36f74c77cac3bdae94c5a1f14fb2bb652ae1a30c5c59"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"241mSqABNwVLqmqqAxu5G2SmybES1J5jN4edU7xzk/Cz4TmfTjSYbB1qEYGtrrcfMkEMh1bOTgWP/DUU0J1mAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-06T02:16:29.806371Z","bundle_sha256":"34c81fc3f5e3301bc5627b8b1562ef8e0066ce75851d07153cfb37167f5e975a"}}