{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:COZLJMV6BCV446LE2MRQ2Q6GQ2","short_pith_number":"pith:COZLJMV6","schema_version":"1.0","canonical_sha256":"13b2b4b2be08abce7964d3230d43c68681d18f5b9410cff7f048a5fae6415861","source":{"kind":"arxiv","id":"1401.6630","version":4},"attestation_state":"computed","paper":{"title":"Higher derivative corrections of $f(R)$ gravity with varying equation of state in the case of variable $G$ and $\\Lambda$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"A. Pasqua, B. Pourhassan, M. Khurshudyan","submitted_at":"2014-01-26T08:58:25Z","abstract_excerpt":"In this paper, we study three models of f(R) modified gravity including higher order terms based on different equation of state parameter. We also assume variable G and $\\Lambda$. By using numerical analysis, we obtain the behavior of some important cosmological parameters, like the Hubble expansion H parameter and the deceleration parameter q. The statefinder diagnostics is also performed for all models."},"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":"1401.6630","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2014-01-26T08:58:25Z","cross_cats_sorted":[],"title_canon_sha256":"0037c6e7a99b813706b442f0387b9b5f67c55de6663dbe81c71cb7239a5ed6fd","abstract_canon_sha256":"9c3f034117a34f361cd8c7c7e9b5380e741b9107145cc86c2a929b658a9ae6b4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:19:36.275743Z","signature_b64":"FJYcnQvskVl8YxpMYsj/yCHJYwPKOlN3HYEkfoW4D+Qhp6wUglfQXarsyI74sO5nKT4RH2v7QFWDKosPVw2+DA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"13b2b4b2be08abce7964d3230d43c68681d18f5b9410cff7f048a5fae6415861","last_reissued_at":"2026-05-18T02:19:36.275075Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:19:36.275075Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Higher derivative corrections of $f(R)$ gravity with varying equation of state in the case of variable $G$ and $\\Lambda$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"A. Pasqua, B. Pourhassan, M. Khurshudyan","submitted_at":"2014-01-26T08:58:25Z","abstract_excerpt":"In this paper, we study three models of f(R) modified gravity including higher order terms based on different equation of state parameter. We also assume variable G and $\\Lambda$. By using numerical analysis, we obtain the behavior of some important cosmological parameters, like the Hubble expansion H parameter and the deceleration parameter q. The statefinder diagnostics is also performed for all models."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1401.6630","kind":"arxiv","version":4},"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":"1401.6630","created_at":"2026-05-18T02:19:36.275173+00:00"},{"alias_kind":"arxiv_version","alias_value":"1401.6630v4","created_at":"2026-05-18T02:19:36.275173+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1401.6630","created_at":"2026-05-18T02:19:36.275173+00:00"},{"alias_kind":"pith_short_12","alias_value":"COZLJMV6BCV4","created_at":"2026-05-18T12:28:22.404517+00:00"},{"alias_kind":"pith_short_16","alias_value":"COZLJMV6BCV446LE","created_at":"2026-05-18T12:28:22.404517+00:00"},{"alias_kind":"pith_short_8","alias_value":"COZLJMV6","created_at":"2026-05-18T12:28:22.404517+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/COZLJMV6BCV446LE2MRQ2Q6GQ2","json":"https://pith.science/pith/COZLJMV6BCV446LE2MRQ2Q6GQ2.json","graph_json":"https://pith.science/api/pith-number/COZLJMV6BCV446LE2MRQ2Q6GQ2/graph.json","events_json":"https://pith.science/api/pith-number/COZLJMV6BCV446LE2MRQ2Q6GQ2/events.json","paper":"https://pith.science/paper/COZLJMV6"},"agent_actions":{"view_html":"https://pith.science/pith/COZLJMV6BCV446LE2MRQ2Q6GQ2","download_json":"https://pith.science/pith/COZLJMV6BCV446LE2MRQ2Q6GQ2.json","view_paper":"https://pith.science/paper/COZLJMV6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1401.6630&json=true","fetch_graph":"https://pith.science/api/pith-number/COZLJMV6BCV446LE2MRQ2Q6GQ2/graph.json","fetch_events":"https://pith.science/api/pith-number/COZLJMV6BCV446LE2MRQ2Q6GQ2/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/COZLJMV6BCV446LE2MRQ2Q6GQ2/action/timestamp_anchor","attest_storage":"https://pith.science/pith/COZLJMV6BCV446LE2MRQ2Q6GQ2/action/storage_attestation","attest_author":"https://pith.science/pith/COZLJMV6BCV446LE2MRQ2Q6GQ2/action/author_attestation","sign_citation":"https://pith.science/pith/COZLJMV6BCV446LE2MRQ2Q6GQ2/action/citation_signature","submit_replication":"https://pith.science/pith/COZLJMV6BCV446LE2MRQ2Q6GQ2/action/replication_record"}},"created_at":"2026-05-18T02:19:36.275173+00:00","updated_at":"2026-05-18T02:19:36.275173+00:00"}