{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GJYX7RI5GCFB6DOQGTNG5M6YE5","short_pith_number":"pith:GJYX7RI5","canonical_record":{"source":{"id":"1809.09659","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-25T18:51:10Z","cross_cats_sorted":[],"title_canon_sha256":"9c3ada8acedb08043c5b3e6d97d53e146fe61bf903d6336648ec32f96b2d51b8","abstract_canon_sha256":"84dee780324ba643a6c2e2ea1f9ea8c3b7b2d932f4c458d1d13e72390ad62e43"},"schema_version":"1.0"},"canonical_sha256":"32717fc51d308a1f0dd034da6eb3d8277cbabcf30631168f088060a4c073e256","source":{"kind":"arxiv","id":"1809.09659","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.09659","created_at":"2026-07-05T00:29:58Z"},{"alias_kind":"arxiv_version","alias_value":"1809.09659v2","created_at":"2026-07-05T00:29:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.09659","created_at":"2026-07-05T00:29:58Z"},{"alias_kind":"pith_short_12","alias_value":"GJYX7RI5GCFB","created_at":"2026-07-05T00:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"GJYX7RI5GCFB6DOQ","created_at":"2026-07-05T00:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"GJYX7RI5","created_at":"2026-07-05T00:29:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GJYX7RI5GCFB6DOQGTNG5M6YE5","target":"record","payload":{"canonical_record":{"source":{"id":"1809.09659","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-25T18:51:10Z","cross_cats_sorted":[],"title_canon_sha256":"9c3ada8acedb08043c5b3e6d97d53e146fe61bf903d6336648ec32f96b2d51b8","abstract_canon_sha256":"84dee780324ba643a6c2e2ea1f9ea8c3b7b2d932f4c458d1d13e72390ad62e43"},"schema_version":"1.0"},"canonical_sha256":"32717fc51d308a1f0dd034da6eb3d8277cbabcf30631168f088060a4c073e256","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:29:58.235809Z","signature_b64":"Apyl96NrnSZ9Cxx6YuiiDa1XbSm2tc7/DLdDfuI3Hoaxunz20xNlK7sUfwYBeNTRKqtfB7ZCB2Q/GTk1TfPYAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"32717fc51d308a1f0dd034da6eb3d8277cbabcf30631168f088060a4c073e256","last_reissued_at":"2026-07-05T00:29:58.235442Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:29:58.235442Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.09659","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T00:29:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1ltQAHlNcSl07/Pf3P6MwxIeIQepRJEfbcnBseQItyNBwk08DpfZSgZyqU6esjPK/XthEDiOOiNX4TxAn0pzDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T19:58:47.508069Z"},"content_sha256":"85227bfd4fbc81c669119f93f355cf3b387aa46a8540b3a64ee22c7abc515194","schema_version":"1.0","event_id":"sha256:85227bfd4fbc81c669119f93f355cf3b387aa46a8540b3a64ee22c7abc515194"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GJYX7RI5GCFB6DOQGTNG5M6YE5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A quantum gravity extension to the Mixmaster dynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Edward Wilson-Ewing","submitted_at":"2018-09-25T18:51:10Z","abstract_excerpt":"In the loop quantum cosmology effective dynamics for the vacuum Bianchi type I and type IX space-times, a non-singular bounce replaces the classical singularity. The bounce can be approximated as an instantaneous transition between two classical vacuum Bianchi I solutions, with simple transition rules relating the solutions before and after the bounce. These transition rules are especially simple when expressed in terms of the Misner variables: the evolution of the mean logarithmic scale factor is reversed, while the shape parameters are unaffected. As a result, the loop quantum cosmology effe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.09659","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/1809.09659/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":"2026-07-05T00:29:58Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tGhRONGGK8yTD4mGQtTxu24+6ZZki7Gpye59zXWausqqrV9eyMPmeNg+RLFPMxRl5Tng5y8IP9gyGr5Q8OTABw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-17T19:58:47.509205Z"},"content_sha256":"3980e1a3a34a14a879484b95b66ac26bd5b204759c84ce9ad058624b465790f4","schema_version":"1.0","event_id":"sha256:3980e1a3a34a14a879484b95b66ac26bd5b204759c84ce9ad058624b465790f4"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GJYX7RI5GCFB6DOQGTNG5M6YE5/bundle.json","state_url":"https://pith.science/pith/GJYX7RI5GCFB6DOQGTNG5M6YE5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GJYX7RI5GCFB6DOQGTNG5M6YE5/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":"2026-08-17T19:58:47Z","links":{"resolver":"https://pith.science/pith/GJYX7RI5GCFB6DOQGTNG5M6YE5","bundle":"https://pith.science/pith/GJYX7RI5GCFB6DOQGTNG5M6YE5/bundle.json","state":"https://pith.science/pith/GJYX7RI5GCFB6DOQGTNG5M6YE5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GJYX7RI5GCFB6DOQGTNG5M6YE5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GJYX7RI5GCFB6DOQGTNG5M6YE5","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":"84dee780324ba643a6c2e2ea1f9ea8c3b7b2d932f4c458d1d13e72390ad62e43","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-25T18:51:10Z","title_canon_sha256":"9c3ada8acedb08043c5b3e6d97d53e146fe61bf903d6336648ec32f96b2d51b8"},"schema_version":"1.0","source":{"id":"1809.09659","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.09659","created_at":"2026-07-05T00:29:58Z"},{"alias_kind":"arxiv_version","alias_value":"1809.09659v2","created_at":"2026-07-05T00:29:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.09659","created_at":"2026-07-05T00:29:58Z"},{"alias_kind":"pith_short_12","alias_value":"GJYX7RI5GCFB","created_at":"2026-07-05T00:29:58Z"},{"alias_kind":"pith_short_16","alias_value":"GJYX7RI5GCFB6DOQ","created_at":"2026-07-05T00:29:58Z"},{"alias_kind":"pith_short_8","alias_value":"GJYX7RI5","created_at":"2026-07-05T00:29:58Z"}],"graph_snapshots":[{"event_id":"sha256:3980e1a3a34a14a879484b95b66ac26bd5b204759c84ce9ad058624b465790f4","target":"graph","created_at":"2026-07-05T00:29:58Z","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/1809.09659/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In the loop quantum cosmology effective dynamics for the vacuum Bianchi type I and type IX space-times, a non-singular bounce replaces the classical singularity. The bounce can be approximated as an instantaneous transition between two classical vacuum Bianchi I solutions, with simple transition rules relating the solutions before and after the bounce. These transition rules are especially simple when expressed in terms of the Misner variables: the evolution of the mean logarithmic scale factor is reversed, while the shape parameters are unaffected. As a result, the loop quantum cosmology effe","authors_text":"Edward Wilson-Ewing","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-25T18:51:10Z","title":"A quantum gravity extension to the Mixmaster dynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.09659","kind":"arxiv","version":2},"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":"sha256:85227bfd4fbc81c669119f93f355cf3b387aa46a8540b3a64ee22c7abc515194","target":"record","created_at":"2026-07-05T00:29:58Z","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":"84dee780324ba643a6c2e2ea1f9ea8c3b7b2d932f4c458d1d13e72390ad62e43","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-25T18:51:10Z","title_canon_sha256":"9c3ada8acedb08043c5b3e6d97d53e146fe61bf903d6336648ec32f96b2d51b8"},"schema_version":"1.0","source":{"id":"1809.09659","kind":"arxiv","version":2}},"canonical_sha256":"32717fc51d308a1f0dd034da6eb3d8277cbabcf30631168f088060a4c073e256","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"32717fc51d308a1f0dd034da6eb3d8277cbabcf30631168f088060a4c073e256","first_computed_at":"2026-07-05T00:29:58.235442Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:29:58.235442Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Apyl96NrnSZ9Cxx6YuiiDa1XbSm2tc7/DLdDfuI3Hoaxunz20xNlK7sUfwYBeNTRKqtfB7ZCB2Q/GTk1TfPYAA==","signature_status":"signed_v1","signed_at":"2026-07-05T00:29:58.235809Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.09659","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:85227bfd4fbc81c669119f93f355cf3b387aa46a8540b3a64ee22c7abc515194","sha256:3980e1a3a34a14a879484b95b66ac26bd5b204759c84ce9ad058624b465790f4"],"state_sha256":"2187360b1004468d492bc24c6e1000838c70ddfc0bc671089dea2833a3864bc0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1fUhV6EqrsbdR0+Ti3J1DltR7C4LA5BNOwXobxX41TBiJDv7Qe6YjdCgosdFbxMmv5Fi4IqRwmL68oJ6qjVTDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-17T19:58:47.524637Z","bundle_sha256":"2d3046e7d3ffbbf490dd2d3a79595909d13fc6d48d44144078706b8ee0922d52"}}