{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:WWLME5NKGXW7NM5IR7L7N6QHDD","short_pith_number":"pith:WWLME5NK","schema_version":"1.0","canonical_sha256":"b596c275aa35edf6b3a88fd7f6fa0718fd8149c10496571a215d15e3c302c5e4","source":{"kind":"arxiv","id":"1811.11967","version":7},"attestation_state":"computed","paper":{"title":"Classical and quantum cosmology of $K$-essentially modified $R^2$ and pure $R^p$ gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Kiyoshi Shiraishi, Mai Yashiki, Nahomi Kan","submitted_at":"2018-11-29T05:05:00Z","abstract_excerpt":"We present a gravitational action with a modified higher order term of a combination of scalar curvature and Lagrangian density of a scalar field. This type of models has been considered first by Cruz-Dombriz et al. The classical and quantum cosmologies governed by the modified action are studied. Models described by a positive-definite action and a pure arbitrary-powered scalar curvature action without the standard Einstein-Hilbert term are also investigated. We show some particular cases in which exact solutions can be obtained."},"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":"1811.11967","kind":"arxiv","version":7},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2018-11-29T05:05:00Z","cross_cats_sorted":[],"title_canon_sha256":"932d76d4a2f875b3539f88975aa0bedb4eba7cea3d45b3ca6864bf702ef9de47","abstract_canon_sha256":"862107411970c3243b7700cb96c49a953da948f86201104321315bda9bebfa30"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:39:25.258181Z","signature_b64":"chJzNRRDfcsf5f7k8TemewFTodJR7ztIWlK7OExtGXLXCI73+UlyYCHWVZYwDgiJ50dKm31OUjMC4HgaTSBUDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b596c275aa35edf6b3a88fd7f6fa0718fd8149c10496571a215d15e3c302c5e4","last_reissued_at":"2026-05-17T23:39:25.257613Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:39:25.257613Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Classical and quantum cosmology of $K$-essentially modified $R^2$ and pure $R^p$ gravity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Kiyoshi Shiraishi, Mai Yashiki, Nahomi Kan","submitted_at":"2018-11-29T05:05:00Z","abstract_excerpt":"We present a gravitational action with a modified higher order term of a combination of scalar curvature and Lagrangian density of a scalar field. This type of models has been considered first by Cruz-Dombriz et al. The classical and quantum cosmologies governed by the modified action are studied. Models described by a positive-definite action and a pure arbitrary-powered scalar curvature action without the standard Einstein-Hilbert term are also investigated. We show some particular cases in which exact solutions can be obtained."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1811.11967","kind":"arxiv","version":7},"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":"1811.11967","created_at":"2026-05-17T23:39:25.257710+00:00"},{"alias_kind":"arxiv_version","alias_value":"1811.11967v7","created_at":"2026-05-17T23:39:25.257710+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1811.11967","created_at":"2026-05-17T23:39:25.257710+00:00"},{"alias_kind":"pith_short_12","alias_value":"WWLME5NKGXW7","created_at":"2026-05-18T12:33:01.666342+00:00"},{"alias_kind":"pith_short_16","alias_value":"WWLME5NKGXW7NM5I","created_at":"2026-05-18T12:33:01.666342+00:00"},{"alias_kind":"pith_short_8","alias_value":"WWLME5NK","created_at":"2026-05-18T12:33:01.666342+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/WWLME5NKGXW7NM5IR7L7N6QHDD","json":"https://pith.science/pith/WWLME5NKGXW7NM5IR7L7N6QHDD.json","graph_json":"https://pith.science/api/pith-number/WWLME5NKGXW7NM5IR7L7N6QHDD/graph.json","events_json":"https://pith.science/api/pith-number/WWLME5NKGXW7NM5IR7L7N6QHDD/events.json","paper":"https://pith.science/paper/WWLME5NK"},"agent_actions":{"view_html":"https://pith.science/pith/WWLME5NKGXW7NM5IR7L7N6QHDD","download_json":"https://pith.science/pith/WWLME5NKGXW7NM5IR7L7N6QHDD.json","view_paper":"https://pith.science/paper/WWLME5NK","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1811.11967&json=true","fetch_graph":"https://pith.science/api/pith-number/WWLME5NKGXW7NM5IR7L7N6QHDD/graph.json","fetch_events":"https://pith.science/api/pith-number/WWLME5NKGXW7NM5IR7L7N6QHDD/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WWLME5NKGXW7NM5IR7L7N6QHDD/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WWLME5NKGXW7NM5IR7L7N6QHDD/action/storage_attestation","attest_author":"https://pith.science/pith/WWLME5NKGXW7NM5IR7L7N6QHDD/action/author_attestation","sign_citation":"https://pith.science/pith/WWLME5NKGXW7NM5IR7L7N6QHDD/action/citation_signature","submit_replication":"https://pith.science/pith/WWLME5NKGXW7NM5IR7L7N6QHDD/action/replication_record"}},"created_at":"2026-05-17T23:39:25.257710+00:00","updated_at":"2026-05-17T23:39:25.257710+00:00"}