{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:IBI7TZKYU5IYADTHRPHAWDVNXC","short_pith_number":"pith:IBI7TZKY","schema_version":"1.0","canonical_sha256":"4051f9e558a751800e678bce0b0eadb892d0d5990954eee1d1b35383223b0f4c","source":{"kind":"arxiv","id":"1808.06545","version":2},"attestation_state":"computed","paper":{"title":"Conformally Flat Collapsing Stars in f (R) gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Narayan Banerjee, Rituparno Goswami, Soumya Chakrabarti, Sunil Maharaj","submitted_at":"2018-08-20T16:17:53Z","abstract_excerpt":"The present work includes an analytical investigation of a collapsing spherical star in f (R) gravity. The interior of the collapsing star admits a conformal flatness. Information regarding the fate of the collapse is extracted from the matching conditions of the extrinsic curvature and the Ricci curvature scalar across the boundary hypersurface of the star. The radial distribution of the physical quantities such as density, anisotropic pressure and radial heat flux are studied. The inhomogeneity of the collapsing interior leads to a non-zero acceleration. The divergence of this acceleration a"},"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":"1808.06545","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-08-20T16:17:53Z","cross_cats_sorted":[],"title_canon_sha256":"bb1e0ed7ec970e381c27537565e3a3f639d7a29258556c0c589484b802561e61","abstract_canon_sha256":"4aecdb04f0dbbc3e987c666ed315765ea2d6a4ead6b8062f209bb9ccf3a4bd66"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:01:28.704198Z","signature_b64":"VdwLl9k9BcoY18N9lHST6rgsVmncW3jQLJ3RuAe0ycV+YQUUDCNNzikBI2NnxQdtRfYOj67WpxU73BPvtq0vCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4051f9e558a751800e678bce0b0eadb892d0d5990954eee1d1b35383223b0f4c","last_reissued_at":"2026-05-18T00:01:28.703678Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:01:28.703678Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Conformally Flat Collapsing Stars in f (R) gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Narayan Banerjee, Rituparno Goswami, Soumya Chakrabarti, Sunil Maharaj","submitted_at":"2018-08-20T16:17:53Z","abstract_excerpt":"The present work includes an analytical investigation of a collapsing spherical star in f (R) gravity. The interior of the collapsing star admits a conformal flatness. Information regarding the fate of the collapse is extracted from the matching conditions of the extrinsic curvature and the Ricci curvature scalar across the boundary hypersurface of the star. The radial distribution of the physical quantities such as density, anisotropic pressure and radial heat flux are studied. The inhomogeneity of the collapsing interior leads to a non-zero acceleration. The divergence of this acceleration a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.06545","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":"1808.06545","created_at":"2026-05-18T00:01:28.703759+00:00"},{"alias_kind":"arxiv_version","alias_value":"1808.06545v2","created_at":"2026-05-18T00:01:28.703759+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.06545","created_at":"2026-05-18T00:01:28.703759+00:00"},{"alias_kind":"pith_short_12","alias_value":"IBI7TZKYU5IY","created_at":"2026-05-18T12:32:28.185984+00:00"},{"alias_kind":"pith_short_16","alias_value":"IBI7TZKYU5IYADTH","created_at":"2026-05-18T12:32:28.185984+00:00"},{"alias_kind":"pith_short_8","alias_value":"IBI7TZKY","created_at":"2026-05-18T12:32:28.185984+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/IBI7TZKYU5IYADTHRPHAWDVNXC","json":"https://pith.science/pith/IBI7TZKYU5IYADTHRPHAWDVNXC.json","graph_json":"https://pith.science/api/pith-number/IBI7TZKYU5IYADTHRPHAWDVNXC/graph.json","events_json":"https://pith.science/api/pith-number/IBI7TZKYU5IYADTHRPHAWDVNXC/events.json","paper":"https://pith.science/paper/IBI7TZKY"},"agent_actions":{"view_html":"https://pith.science/pith/IBI7TZKYU5IYADTHRPHAWDVNXC","download_json":"https://pith.science/pith/IBI7TZKYU5IYADTHRPHAWDVNXC.json","view_paper":"https://pith.science/paper/IBI7TZKY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1808.06545&json=true","fetch_graph":"https://pith.science/api/pith-number/IBI7TZKYU5IYADTHRPHAWDVNXC/graph.json","fetch_events":"https://pith.science/api/pith-number/IBI7TZKYU5IYADTHRPHAWDVNXC/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/IBI7TZKYU5IYADTHRPHAWDVNXC/action/timestamp_anchor","attest_storage":"https://pith.science/pith/IBI7TZKYU5IYADTHRPHAWDVNXC/action/storage_attestation","attest_author":"https://pith.science/pith/IBI7TZKYU5IYADTHRPHAWDVNXC/action/author_attestation","sign_citation":"https://pith.science/pith/IBI7TZKYU5IYADTHRPHAWDVNXC/action/citation_signature","submit_replication":"https://pith.science/pith/IBI7TZKYU5IYADTHRPHAWDVNXC/action/replication_record"}},"created_at":"2026-05-18T00:01:28.703759+00:00","updated_at":"2026-05-18T00:01:28.703759+00:00"}