{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2012:JPVCUZW6XJYX636N6A4WSNKPOR","short_pith_number":"pith:JPVCUZW6","schema_version":"1.0","canonical_sha256":"4bea2a66deba717f6fcdf03969354f747b49fb4946c44b2d3d183302c4d6c02a","source":{"kind":"arxiv","id":"1205.1037","version":3},"attestation_state":"computed","paper":{"title":"Signature Change in Noncommutative FRW Cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Farhad Darabi, Hossein Motavalli, Taymaz Ghaneh","submitted_at":"2012-05-04T18:55:15Z","abstract_excerpt":"The conditions for which the no boundary proposal may have a classical realization of a continuous change of signature, are investigated for a cosmological model described by FRW metric coupled with a self interacting scalar field, having a noncommutative phase space of dynamical variables. The model is then quantized and a good correspondence is shown between the classical and quantum cosmology indicating that the noncommutativity does not destruct the classical-quantum correspondence. It is also shown that the quantum cosmology supports a signature transition where the bare cosmological cons"},"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":"1205.1037","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2012-05-04T18:55:15Z","cross_cats_sorted":[],"title_canon_sha256":"c359305363a59bb0f6c5d9c0259f58e6b7e40a8c0746c5b589a2e50da870784c","abstract_canon_sha256":"6e9bddc628ee396042e0b5f0fbd0523f600ebf0322105ab336f0e514a3ec4a9c"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:39:14.570347Z","signature_b64":"y165beNvCuXL6jOZ+oyxACeTfaKBvBPTijA2W+NsqciNcXbddS1NwU9LJskwO2TWvmUPwvrYJ+pP7mESN8hcAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"4bea2a66deba717f6fcdf03969354f747b49fb4946c44b2d3d183302c4d6c02a","last_reissued_at":"2026-05-18T03:39:14.569764Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:39:14.569764Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Signature Change in Noncommutative FRW Cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Farhad Darabi, Hossein Motavalli, Taymaz Ghaneh","submitted_at":"2012-05-04T18:55:15Z","abstract_excerpt":"The conditions for which the no boundary proposal may have a classical realization of a continuous change of signature, are investigated for a cosmological model described by FRW metric coupled with a self interacting scalar field, having a noncommutative phase space of dynamical variables. The model is then quantized and a good correspondence is shown between the classical and quantum cosmology indicating that the noncommutativity does not destruct the classical-quantum correspondence. It is also shown that the quantum cosmology supports a signature transition where the bare cosmological cons"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.1037","kind":"arxiv","version":3},"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":"1205.1037","created_at":"2026-05-18T03:39:14.569861+00:00"},{"alias_kind":"arxiv_version","alias_value":"1205.1037v3","created_at":"2026-05-18T03:39:14.569861+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.1037","created_at":"2026-05-18T03:39:14.569861+00:00"},{"alias_kind":"pith_short_12","alias_value":"JPVCUZW6XJYX","created_at":"2026-05-18T12:27:11.947152+00:00"},{"alias_kind":"pith_short_16","alias_value":"JPVCUZW6XJYX636N","created_at":"2026-05-18T12:27:11.947152+00:00"},{"alias_kind":"pith_short_8","alias_value":"JPVCUZW6","created_at":"2026-05-18T12:27:11.947152+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/JPVCUZW6XJYX636N6A4WSNKPOR","json":"https://pith.science/pith/JPVCUZW6XJYX636N6A4WSNKPOR.json","graph_json":"https://pith.science/api/pith-number/JPVCUZW6XJYX636N6A4WSNKPOR/graph.json","events_json":"https://pith.science/api/pith-number/JPVCUZW6XJYX636N6A4WSNKPOR/events.json","paper":"https://pith.science/paper/JPVCUZW6"},"agent_actions":{"view_html":"https://pith.science/pith/JPVCUZW6XJYX636N6A4WSNKPOR","download_json":"https://pith.science/pith/JPVCUZW6XJYX636N6A4WSNKPOR.json","view_paper":"https://pith.science/paper/JPVCUZW6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1205.1037&json=true","fetch_graph":"https://pith.science/api/pith-number/JPVCUZW6XJYX636N6A4WSNKPOR/graph.json","fetch_events":"https://pith.science/api/pith-number/JPVCUZW6XJYX636N6A4WSNKPOR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/JPVCUZW6XJYX636N6A4WSNKPOR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/JPVCUZW6XJYX636N6A4WSNKPOR/action/storage_attestation","attest_author":"https://pith.science/pith/JPVCUZW6XJYX636N6A4WSNKPOR/action/author_attestation","sign_citation":"https://pith.science/pith/JPVCUZW6XJYX636N6A4WSNKPOR/action/citation_signature","submit_replication":"https://pith.science/pith/JPVCUZW6XJYX636N6A4WSNKPOR/action/replication_record"}},"created_at":"2026-05-18T03:39:14.569861+00:00","updated_at":"2026-05-18T03:39:14.569861+00:00"}