{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:RL6Q2VCVDNF4FPQNAVCOVUEXIZ","short_pith_number":"pith:RL6Q2VCV","canonical_record":{"source":{"id":"1809.01458","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-05T12:39:07Z","cross_cats_sorted":[],"title_canon_sha256":"532ad10e2842395ca586e2665828c0f1499dd41c462908751f55525e3b257afe","abstract_canon_sha256":"af5388fec04b7b5f747e7edd76216d003059f37714e4d71a301d0d27d9e5a6cb"},"schema_version":"1.0"},"canonical_sha256":"8afd0d54551b4bc2be0d0544ead097465fe50bc051d34d582ed5e116345d2f88","source":{"kind":"arxiv","id":"1809.01458","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.01458","created_at":"2026-05-17T23:50:24Z"},{"alias_kind":"arxiv_version","alias_value":"1809.01458v1","created_at":"2026-05-17T23:50:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.01458","created_at":"2026-05-17T23:50:24Z"},{"alias_kind":"pith_short_12","alias_value":"RL6Q2VCVDNF4","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RL6Q2VCVDNF4FPQN","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RL6Q2VCV","created_at":"2026-05-18T12:32:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:RL6Q2VCVDNF4FPQNAVCOVUEXIZ","target":"record","payload":{"canonical_record":{"source":{"id":"1809.01458","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-05T12:39:07Z","cross_cats_sorted":[],"title_canon_sha256":"532ad10e2842395ca586e2665828c0f1499dd41c462908751f55525e3b257afe","abstract_canon_sha256":"af5388fec04b7b5f747e7edd76216d003059f37714e4d71a301d0d27d9e5a6cb"},"schema_version":"1.0"},"canonical_sha256":"8afd0d54551b4bc2be0d0544ead097465fe50bc051d34d582ed5e116345d2f88","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:24.088479Z","signature_b64":"HdsovrKAVr1tn1EAon1LDGtTY6tHml4aosp3aXUrd0sPi9skAnK8DqQhRkqNHvtwJPk9g7/kKyPWkaDVCOKVDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8afd0d54551b4bc2be0d0544ead097465fe50bc051d34d582ed5e116345d2f88","last_reissued_at":"2026-05-17T23:50:24.087972Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:24.087972Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1809.01458","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":"2026-05-17T23:50:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"luhe8pI/qK26NLpWjAiasdC2KRTZHqT40wl4613tfmkayWzzyI9fqRVCgOx/C0xuVmrIsYStzblxPsJtMIQJCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T07:25:43.097433Z"},"content_sha256":"9d84322d691e9274f22f6581dba5a0528f3f3378a13655811c9a3bf046df99e7","schema_version":"1.0","event_id":"sha256:9d84322d691e9274f22f6581dba5a0528f3f3378a13655811c9a3bf046df99e7"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:RL6Q2VCVDNF4FPQNAVCOVUEXIZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Kantowski-Sachs Einstein-Aether Scalar Field Cosmological Models","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"A. A. Coley, B. Alhulaimi, E. Knighton, R. J. van den Hoogen, S. Mohandas, S. O'Neil","submitted_at":"2018-09-05T12:39:07Z","abstract_excerpt":"A class of positive curvature spatially homogeneous but anisotropic cosmological models within an Einstein-aether gravitational framework are investigated. The matter source is assumed to be a scalar field which is coupled to the expansion of the aether field through a generalized exponential potential. The evolution equations are expressed in terms of expansion-normalized variables to produce an autonomous system of ordinary differential equations suitable for a numerical and qualitative analysis. An analysis of the local stability of the equilibrium points indicates that there exists a range"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.01458","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":"2026-05-17T23:50:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LcE4pYsk2iB30g7LfStkB6sah5fFtAORKIyZrkudJrBq7GnbEaxLPz71rPrJ65eux59090XCf04tHC/7XitKBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-19T07:25:43.098037Z"},"content_sha256":"6ff04d3f366c8d5dfcb77d2beb9c2cccb971336385fb7864c3695a35134caeac","schema_version":"1.0","event_id":"sha256:6ff04d3f366c8d5dfcb77d2beb9c2cccb971336385fb7864c3695a35134caeac"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RL6Q2VCVDNF4FPQNAVCOVUEXIZ/bundle.json","state_url":"https://pith.science/pith/RL6Q2VCVDNF4FPQNAVCOVUEXIZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RL6Q2VCVDNF4FPQNAVCOVUEXIZ/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":"2026-05-19T07:25:43Z","links":{"resolver":"https://pith.science/pith/RL6Q2VCVDNF4FPQNAVCOVUEXIZ","bundle":"https://pith.science/pith/RL6Q2VCVDNF4FPQNAVCOVUEXIZ/bundle.json","state":"https://pith.science/pith/RL6Q2VCVDNF4FPQNAVCOVUEXIZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RL6Q2VCVDNF4FPQNAVCOVUEXIZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:RL6Q2VCVDNF4FPQNAVCOVUEXIZ","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":"af5388fec04b7b5f747e7edd76216d003059f37714e4d71a301d0d27d9e5a6cb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-05T12:39:07Z","title_canon_sha256":"532ad10e2842395ca586e2665828c0f1499dd41c462908751f55525e3b257afe"},"schema_version":"1.0","source":{"id":"1809.01458","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.01458","created_at":"2026-05-17T23:50:24Z"},{"alias_kind":"arxiv_version","alias_value":"1809.01458v1","created_at":"2026-05-17T23:50:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.01458","created_at":"2026-05-17T23:50:24Z"},{"alias_kind":"pith_short_12","alias_value":"RL6Q2VCVDNF4","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_16","alias_value":"RL6Q2VCVDNF4FPQN","created_at":"2026-05-18T12:32:50Z"},{"alias_kind":"pith_short_8","alias_value":"RL6Q2VCV","created_at":"2026-05-18T12:32:50Z"}],"graph_snapshots":[{"event_id":"sha256:6ff04d3f366c8d5dfcb77d2beb9c2cccb971336385fb7864c3695a35134caeac","target":"graph","created_at":"2026-05-17T23:50:24Z","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":"A class of positive curvature spatially homogeneous but anisotropic cosmological models within an Einstein-aether gravitational framework are investigated. The matter source is assumed to be a scalar field which is coupled to the expansion of the aether field through a generalized exponential potential. The evolution equations are expressed in terms of expansion-normalized variables to produce an autonomous system of ordinary differential equations suitable for a numerical and qualitative analysis. An analysis of the local stability of the equilibrium points indicates that there exists a range","authors_text":"A. A. Coley, B. Alhulaimi, E. Knighton, R. J. van den Hoogen, S. Mohandas, S. O'Neil","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-05T12:39:07Z","title":"Kantowski-Sachs Einstein-Aether Scalar Field Cosmological Models"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.01458","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":"sha256:9d84322d691e9274f22f6581dba5a0528f3f3378a13655811c9a3bf046df99e7","target":"record","created_at":"2026-05-17T23:50:24Z","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":"af5388fec04b7b5f747e7edd76216d003059f37714e4d71a301d0d27d9e5a6cb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-09-05T12:39:07Z","title_canon_sha256":"532ad10e2842395ca586e2665828c0f1499dd41c462908751f55525e3b257afe"},"schema_version":"1.0","source":{"id":"1809.01458","kind":"arxiv","version":1}},"canonical_sha256":"8afd0d54551b4bc2be0d0544ead097465fe50bc051d34d582ed5e116345d2f88","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8afd0d54551b4bc2be0d0544ead097465fe50bc051d34d582ed5e116345d2f88","first_computed_at":"2026-05-17T23:50:24.087972Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:24.087972Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HdsovrKAVr1tn1EAon1LDGtTY6tHml4aosp3aXUrd0sPi9skAnK8DqQhRkqNHvtwJPk9g7/kKyPWkaDVCOKVDA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:24.088479Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.01458","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9d84322d691e9274f22f6581dba5a0528f3f3378a13655811c9a3bf046df99e7","sha256:6ff04d3f366c8d5dfcb77d2beb9c2cccb971336385fb7864c3695a35134caeac"],"state_sha256":"e6f1dc0833d79c8822df4baeff22f0c2c94136ba5ec9638500c389f2a919de6b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"x9tdvosgrt8QsWGmVkC3I+N8tOGCGGwceIz3mdNb3DPjERtoq/6UB5ngtnS0QBZ3ALp+KwFWIU3P1T+jMdh5Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-19T07:25:43.099780Z","bundle_sha256":"c29d964d4acea05d0227fd7ff007f8df1e6b11b07feaa24e5104c8a6207d27d5"}}