{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:OFRGCHYUH2J7J7RPS42ATOMZXY","short_pith_number":"pith:OFRGCHYU","schema_version":"1.0","canonical_sha256":"7162611f143e93f4fe2f973409b999be2c410bea404cd1a9bd4c8c300fa88b80","source":{"kind":"arxiv","id":"1211.6983","version":2},"attestation_state":"computed","paper":{"title":"Unified Bertotti-Robinson and Melvin Spacetimes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"M. Halilsoy, S. Habib Mazharimousavi","submitted_at":"2012-11-24T10:30:37Z","abstract_excerpt":"We present a solution for the Einstein-Maxwell (EM) equations which unifies both the magnetic Bertotti-Robinson (BR) and Melvin (ML) solutions as a single metric in the axially symmetric coordinates ${t,\\rho,z,\\varphi} $. Depending on the strength of magnetic field the spacetime manifold, unlike the cases of separate BR and ML spacetime, develops singularity on the symmetry axis ($\\rho =0$). Our analysis shows, beside other things that there are regions inaccessible to all null geodesics."},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1211.6983","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-11-24T10:30:37Z","cross_cats_sorted":[],"title_canon_sha256":"3a29dee80c592a59a0b18abb5d4e27c9972a8b373fa9f29fef3d71f908b07fd8","abstract_canon_sha256":"04278c79ceb7bc76829d677a18970e4a91d8e21056f42210df8aca55224a51c1"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:13:12.729967Z","signature_b64":"XdUQsfw0hieYL1T41kZkWntlzgEVmGe4M9NVEuJd8mQFGvufnk1+opJlFFbmabUnYlRhFFSX4puwa5W+yhiDBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7162611f143e93f4fe2f973409b999be2c410bea404cd1a9bd4c8c300fa88b80","last_reissued_at":"2026-05-18T03:13:12.729286Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:13:12.729286Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Unified Bertotti-Robinson and Melvin Spacetimes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"M. Halilsoy, S. Habib Mazharimousavi","submitted_at":"2012-11-24T10:30:37Z","abstract_excerpt":"We present a solution for the Einstein-Maxwell (EM) equations which unifies both the magnetic Bertotti-Robinson (BR) and Melvin (ML) solutions as a single metric in the axially symmetric coordinates ${t,\\rho,z,\\varphi} $. Depending on the strength of magnetic field the spacetime manifold, unlike the cases of separate BR and ML spacetime, develops singularity on the symmetry axis ($\\rho =0$). Our analysis shows, beside other things that there are regions inaccessible to all null geodesics."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1211.6983","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1211.6983","created_at":"2026-05-18T03:13:12.729398+00:00"},{"alias_kind":"arxiv_version","alias_value":"1211.6983v2","created_at":"2026-05-18T03:13:12.729398+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1211.6983","created_at":"2026-05-18T03:13:12.729398+00:00"},{"alias_kind":"pith_short_12","alias_value":"OFRGCHYUH2J7","created_at":"2026-05-18T12:27:16.716162+00:00"},{"alias_kind":"pith_short_16","alias_value":"OFRGCHYUH2J7J7RP","created_at":"2026-05-18T12:27:16.716162+00:00"},{"alias_kind":"pith_short_8","alias_value":"OFRGCHYU","created_at":"2026-05-18T12:27:16.716162+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/OFRGCHYUH2J7J7RPS42ATOMZXY","json":"https://pith.science/pith/OFRGCHYUH2J7J7RPS42ATOMZXY.json","graph_json":"https://pith.science/api/pith-number/OFRGCHYUH2J7J7RPS42ATOMZXY/graph.json","events_json":"https://pith.science/api/pith-number/OFRGCHYUH2J7J7RPS42ATOMZXY/events.json","paper":"https://pith.science/paper/OFRGCHYU"},"agent_actions":{"view_html":"https://pith.science/pith/OFRGCHYUH2J7J7RPS42ATOMZXY","download_json":"https://pith.science/pith/OFRGCHYUH2J7J7RPS42ATOMZXY.json","view_paper":"https://pith.science/paper/OFRGCHYU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1211.6983&json=true","fetch_graph":"https://pith.science/api/pith-number/OFRGCHYUH2J7J7RPS42ATOMZXY/graph.json","fetch_events":"https://pith.science/api/pith-number/OFRGCHYUH2J7J7RPS42ATOMZXY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/OFRGCHYUH2J7J7RPS42ATOMZXY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/OFRGCHYUH2J7J7RPS42ATOMZXY/action/storage_attestation","attest_author":"https://pith.science/pith/OFRGCHYUH2J7J7RPS42ATOMZXY/action/author_attestation","sign_citation":"https://pith.science/pith/OFRGCHYUH2J7J7RPS42ATOMZXY/action/citation_signature","submit_replication":"https://pith.science/pith/OFRGCHYUH2J7J7RPS42ATOMZXY/action/replication_record"}},"created_at":"2026-05-18T03:13:12.729398+00:00","updated_at":"2026-05-18T03:13:12.729398+00:00"}