{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:4RIA7ZSCPUV56G3YRCJY3U6S2R","short_pith_number":"pith:4RIA7ZSC","canonical_record":{"source":{"id":"1502.02219","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-02-08T06:42:44Z","cross_cats_sorted":[],"title_canon_sha256":"0114263d14b4687f8ca69bdd324167a3bff4d6a469006ca3fce5177548635c16","abstract_canon_sha256":"26154fd610f61e7b9d8b3eccabbdeb690bd87b601afb2cab03d044d9c6869435"},"schema_version":"1.0"},"canonical_sha256":"e4500fe6427d2bdf1b7888938dd3d2d4590952c6c28250a6f948518dfbf42152","source":{"kind":"arxiv","id":"1502.02219","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.02219","created_at":"2026-05-18T01:23:38Z"},{"alias_kind":"arxiv_version","alias_value":"1502.02219v2","created_at":"2026-05-18T01:23:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.02219","created_at":"2026-05-18T01:23:38Z"},{"alias_kind":"pith_short_12","alias_value":"4RIA7ZSCPUV5","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"4RIA7ZSCPUV56G3Y","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"4RIA7ZSC","created_at":"2026-05-18T12:29:05Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:4RIA7ZSCPUV56G3YRCJY3U6S2R","target":"record","payload":{"canonical_record":{"source":{"id":"1502.02219","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-02-08T06:42:44Z","cross_cats_sorted":[],"title_canon_sha256":"0114263d14b4687f8ca69bdd324167a3bff4d6a469006ca3fce5177548635c16","abstract_canon_sha256":"26154fd610f61e7b9d8b3eccabbdeb690bd87b601afb2cab03d044d9c6869435"},"schema_version":"1.0"},"canonical_sha256":"e4500fe6427d2bdf1b7888938dd3d2d4590952c6c28250a6f948518dfbf42152","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:23:38.497420Z","signature_b64":"1vW9rwj7eKOcBnj6ltjgHlSHGPbrKLmw4v5lPuG29BLP9+3SDDr9g8Q5OjVs/CXozQsKc1FJNCcFZXxdLpuJCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4500fe6427d2bdf1b7888938dd3d2d4590952c6c28250a6f948518dfbf42152","last_reissued_at":"2026-05-18T01:23:38.496707Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:23:38.496707Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.02219","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":"2026-05-18T01:23:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QE8JHjwP+s6RyZxil/0kidj4xbVQTl4JeEIHpikS8y6sdlRbdis+xU4trSMj4sgREQQDJ/40bBZq3dBRTsiFDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:05:09.587929Z"},"content_sha256":"57b4fb162fdc7e51d8f210c6f6e04fbded65e261c6cda41e1b08876f3090b94d","schema_version":"1.0","event_id":"sha256:57b4fb162fdc7e51d8f210c6f6e04fbded65e261c6cda41e1b08876f3090b94d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:4RIA7ZSCPUV56G3YRCJY3U6S2R","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Exact EGB models for spherical static perfect fluids","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Brian Chilambwe, Sudan Hansraj, Sunil D. Maharaj","submitted_at":"2015-02-08T06:42:44Z","abstract_excerpt":"We obtain a new exact solution to the field equations in the EGB modified theory of gravity for a 5-dimensional spherically symmetric static distribution. By using a transformation, the study is reduced to the analysis of a single second order nonlinear differential equation. In general the condition of pressure isotropy produces a first order differential equation which is an Abel equation of the second kind. An exact solution is found. The solution is examined for physical admissability. In particular a set of constants is found which ensures that a pressure-free hypersurface exists which de"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.02219","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":""},"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":"2026-05-18T01:23:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3XD0OsrYXk0qwDe5fiaa3LO9JWBRjq74IvDDQeZmwPghEYVKEngdNRN5AQf6Vwe5CIpf7qZT0Zpm4GFqE9+TAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T21:05:09.588663Z"},"content_sha256":"6a9f39755f2903e81d1e7c858def248a90388fd16e5054f46e6f0cbf676102b2","schema_version":"1.0","event_id":"sha256:6a9f39755f2903e81d1e7c858def248a90388fd16e5054f46e6f0cbf676102b2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4RIA7ZSCPUV56G3YRCJY3U6S2R/bundle.json","state_url":"https://pith.science/pith/4RIA7ZSCPUV56G3YRCJY3U6S2R/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4RIA7ZSCPUV56G3YRCJY3U6S2R/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":"2026-05-25T21:05:09Z","links":{"resolver":"https://pith.science/pith/4RIA7ZSCPUV56G3YRCJY3U6S2R","bundle":"https://pith.science/pith/4RIA7ZSCPUV56G3YRCJY3U6S2R/bundle.json","state":"https://pith.science/pith/4RIA7ZSCPUV56G3YRCJY3U6S2R/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4RIA7ZSCPUV56G3YRCJY3U6S2R/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:4RIA7ZSCPUV56G3YRCJY3U6S2R","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":"26154fd610f61e7b9d8b3eccabbdeb690bd87b601afb2cab03d044d9c6869435","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-02-08T06:42:44Z","title_canon_sha256":"0114263d14b4687f8ca69bdd324167a3bff4d6a469006ca3fce5177548635c16"},"schema_version":"1.0","source":{"id":"1502.02219","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.02219","created_at":"2026-05-18T01:23:38Z"},{"alias_kind":"arxiv_version","alias_value":"1502.02219v2","created_at":"2026-05-18T01:23:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.02219","created_at":"2026-05-18T01:23:38Z"},{"alias_kind":"pith_short_12","alias_value":"4RIA7ZSCPUV5","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_16","alias_value":"4RIA7ZSCPUV56G3Y","created_at":"2026-05-18T12:29:05Z"},{"alias_kind":"pith_short_8","alias_value":"4RIA7ZSC","created_at":"2026-05-18T12:29:05Z"}],"graph_snapshots":[{"event_id":"sha256:6a9f39755f2903e81d1e7c858def248a90388fd16e5054f46e6f0cbf676102b2","target":"graph","created_at":"2026-05-18T01:23:38Z","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 obtain a new exact solution to the field equations in the EGB modified theory of gravity for a 5-dimensional spherically symmetric static distribution. By using a transformation, the study is reduced to the analysis of a single second order nonlinear differential equation. In general the condition of pressure isotropy produces a first order differential equation which is an Abel equation of the second kind. An exact solution is found. The solution is examined for physical admissability. In particular a set of constants is found which ensures that a pressure-free hypersurface exists which de","authors_text":"Brian Chilambwe, Sudan Hansraj, Sunil D. Maharaj","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-02-08T06:42:44Z","title":"Exact EGB models for spherical static perfect fluids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.02219","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":"sha256:57b4fb162fdc7e51d8f210c6f6e04fbded65e261c6cda41e1b08876f3090b94d","target":"record","created_at":"2026-05-18T01:23:38Z","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":"26154fd610f61e7b9d8b3eccabbdeb690bd87b601afb2cab03d044d9c6869435","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2015-02-08T06:42:44Z","title_canon_sha256":"0114263d14b4687f8ca69bdd324167a3bff4d6a469006ca3fce5177548635c16"},"schema_version":"1.0","source":{"id":"1502.02219","kind":"arxiv","version":2}},"canonical_sha256":"e4500fe6427d2bdf1b7888938dd3d2d4590952c6c28250a6f948518dfbf42152","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e4500fe6427d2bdf1b7888938dd3d2d4590952c6c28250a6f948518dfbf42152","first_computed_at":"2026-05-18T01:23:38.496707Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:23:38.496707Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1vW9rwj7eKOcBnj6ltjgHlSHGPbrKLmw4v5lPuG29BLP9+3SDDr9g8Q5OjVs/CXozQsKc1FJNCcFZXxdLpuJCA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:23:38.497420Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.02219","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:57b4fb162fdc7e51d8f210c6f6e04fbded65e261c6cda41e1b08876f3090b94d","sha256:6a9f39755f2903e81d1e7c858def248a90388fd16e5054f46e6f0cbf676102b2"],"state_sha256":"606c6559714407f23135d93c37330c3a0435c19618faa28dfaacfd9f31f89352"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U/ddl00QMLOMVeU4XaJh0TlDW7a8XrAUY64HTfdrqG+3KW6I2uHao7JN16N8af5L1wOtbN8Asxb5FoT8r+1WCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T21:05:09.592878Z","bundle_sha256":"ca17b194906214ffc9f52493bedca4e76fb61a3f84a26d69f268779760d5fb50"}}