{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2007:KREZQC7F7Z6KDICHFQOLLAROAU","short_pith_number":"pith:KREZQC7F","schema_version":"1.0","canonical_sha256":"5449980be5fe7ca1a0472c1cb5822e05099495c399e1a74021c4de7e464bfb57","source":{"kind":"arxiv","id":"0705.3380","version":1},"attestation_state":"computed","paper":{"title":"Lorentzian and signature changing branes","license":"","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Jos\\'e M. M. Senovilla, Marc Mars, Ra\\\"ul Vera","submitted_at":"2007-05-23T13:54:45Z","abstract_excerpt":"General hypersurface layers are considered in order to describe brane-worlds and shell cosmologies. No restriction is placed on the causal character of the hypersurface which may thus have internal changes of signature. Strengthening the results in our previous letter [1], we confirm that a good, regular and consistent description of signature change is achieved in these brane/shells scenarios, while keeping the hypersurface and the bulk completely regular. Our formalism allows for a unified description of the traditional timelike branes/shells together with the signature-changing, or pure nul"},"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":"0705.3380","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-th","submitted_at":"2007-05-23T13:54:45Z","cross_cats_sorted":["gr-qc"],"title_canon_sha256":"6ca556b0a52f8ab8100a168d273850cbc60c1f7ac671b1eb3ac0fa5b9fdc027c","abstract_canon_sha256":"e11b2843be8056f342626beeda1ee86527925af1f677de0cb7745c0234bc3722"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-04T15:21:12.926939Z","signature_b64":"w46v3ydm2hivJ70OnXOtsN7Jtr7HWoHrBzUpicY8r8i5nfNtlkcZuWHHhnl/J1sVMHDo7TYHj6dBh0Q/1UhHCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5449980be5fe7ca1a0472c1cb5822e05099495c399e1a74021c4de7e464bfb57","last_reissued_at":"2026-07-04T15:21:12.926531Z","signature_status":"signed_v1","first_computed_at":"2026-07-04T15:21:12.926531Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Lorentzian and signature changing branes","license":"","headline":"","cross_cats":["gr-qc"],"primary_cat":"hep-th","authors_text":"Jos\\'e M. M. Senovilla, Marc Mars, Ra\\\"ul Vera","submitted_at":"2007-05-23T13:54:45Z","abstract_excerpt":"General hypersurface layers are considered in order to describe brane-worlds and shell cosmologies. No restriction is placed on the causal character of the hypersurface which may thus have internal changes of signature. Strengthening the results in our previous letter [1], we confirm that a good, regular and consistent description of signature change is achieved in these brane/shells scenarios, while keeping the hypersurface and the bulk completely regular. Our formalism allows for a unified description of the traditional timelike branes/shells together with the signature-changing, or pure nul"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0705.3380","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/0705.3380/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0705.3380","created_at":"2026-07-04T15:21:12.926587+00:00"},{"alias_kind":"arxiv_version","alias_value":"0705.3380v1","created_at":"2026-07-04T15:21:12.926587+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0705.3380","created_at":"2026-07-04T15:21:12.926587+00:00"},{"alias_kind":"pith_short_12","alias_value":"KREZQC7F7Z6K","created_at":"2026-07-04T15:21:12.926587+00:00"},{"alias_kind":"pith_short_16","alias_value":"KREZQC7F7Z6KDICH","created_at":"2026-07-04T15:21:12.926587+00:00"},{"alias_kind":"pith_short_8","alias_value":"KREZQC7F","created_at":"2026-07-04T15:21:12.926587+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/KREZQC7F7Z6KDICHFQOLLAROAU","json":"https://pith.science/pith/KREZQC7F7Z6KDICHFQOLLAROAU.json","graph_json":"https://pith.science/api/pith-number/KREZQC7F7Z6KDICHFQOLLAROAU/graph.json","events_json":"https://pith.science/api/pith-number/KREZQC7F7Z6KDICHFQOLLAROAU/events.json","paper":"https://pith.science/paper/KREZQC7F"},"agent_actions":{"view_html":"https://pith.science/pith/KREZQC7F7Z6KDICHFQOLLAROAU","download_json":"https://pith.science/pith/KREZQC7F7Z6KDICHFQOLLAROAU.json","view_paper":"https://pith.science/paper/KREZQC7F","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0705.3380&json=true","fetch_graph":"https://pith.science/api/pith-number/KREZQC7F7Z6KDICHFQOLLAROAU/graph.json","fetch_events":"https://pith.science/api/pith-number/KREZQC7F7Z6KDICHFQOLLAROAU/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KREZQC7F7Z6KDICHFQOLLAROAU/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KREZQC7F7Z6KDICHFQOLLAROAU/action/storage_attestation","attest_author":"https://pith.science/pith/KREZQC7F7Z6KDICHFQOLLAROAU/action/author_attestation","sign_citation":"https://pith.science/pith/KREZQC7F7Z6KDICHFQOLLAROAU/action/citation_signature","submit_replication":"https://pith.science/pith/KREZQC7F7Z6KDICHFQOLLAROAU/action/replication_record"}},"created_at":"2026-07-04T15:21:12.926587+00:00","updated_at":"2026-07-04T15:21:12.926587+00:00"}