{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:ZVRSS7ZNNSQLZOX36N5VAGWQOY","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":"cd297c49507f740f31da97cd1c41d16aef5cfbf9a930dd351bffac12c5675cb5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-12-03T11:04:31Z","title_canon_sha256":"e18ecdde8c9838ad95ea9569caafd08caaf164d61eea1dc3d739f94085e4814c"},"schema_version":"1.0","source":{"id":"1312.1150","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.1150","created_at":"2026-05-18T02:52:49Z"},{"alias_kind":"arxiv_version","alias_value":"1312.1150v3","created_at":"2026-05-18T02:52:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.1150","created_at":"2026-05-18T02:52:49Z"},{"alias_kind":"pith_short_12","alias_value":"ZVRSS7ZNNSQL","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_16","alias_value":"ZVRSS7ZNNSQLZOX3","created_at":"2026-05-18T12:28:09Z"},{"alias_kind":"pith_short_8","alias_value":"ZVRSS7ZN","created_at":"2026-05-18T12:28:09Z"}],"graph_snapshots":[{"event_id":"sha256:cb7757d86ad02bea5243e07426435e877f85263a0fddf6399e8a601232eedf15","target":"graph","created_at":"2026-05-18T02:52:49Z","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 provide a new class of exact solutions for the interior in (2 + 1) dimensional spacetime. The solutions obtained for the perfect fluid model both with and without cosmological constant ($\\Lambda$) are found to be regular and singularity free. It assume very simple analytical forms that help us to study the various physical properties of the configuration. Solutions without $\\Lambda$ are found to be physically acceptable.","authors_text":"A. A. Usmani, Farook Rahaman, Piyali Bhar, Ritabrata Biswas","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-12-03T11:04:31Z","title":"Exact interior solutions in (2 + 1) dimensional spacetime"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.1150","kind":"arxiv","version":3},"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":"sha256:9f8a6752a4cb63c47f0fc031ce9af93ca82445515a9246372726640232d79be4","target":"record","created_at":"2026-05-18T02:52:49Z","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":"cd297c49507f740f31da97cd1c41d16aef5cfbf9a930dd351bffac12c5675cb5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2013-12-03T11:04:31Z","title_canon_sha256":"e18ecdde8c9838ad95ea9569caafd08caaf164d61eea1dc3d739f94085e4814c"},"schema_version":"1.0","source":{"id":"1312.1150","kind":"arxiv","version":3}},"canonical_sha256":"cd63297f2d6ca0bcbafbf37b501ad0762d6422d1d0667467a29d3fee63e0fd97","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd63297f2d6ca0bcbafbf37b501ad0762d6422d1d0667467a29d3fee63e0fd97","first_computed_at":"2026-05-18T02:52:49.410140Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:52:49.410140Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iyTVaZBGEiAa2y2Urqi4nzS8i8A1nCi8w3emFHJnO1zv/s2L/Uiwp0IZkmogCsJttH+pZvbgRT0Xb/md7rMuCw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:52:49.410542Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.1150","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f8a6752a4cb63c47f0fc031ce9af93ca82445515a9246372726640232d79be4","sha256:cb7757d86ad02bea5243e07426435e877f85263a0fddf6399e8a601232eedf15"],"state_sha256":"ce6ec0b1be268142da772f39cdd676f9585519414b349ab7968044fff3b70ab3"}