{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2024:T6BWPMKP3TIYEGUQTC2SLVRWJR","short_pith_number":"pith:T6BWPMKP","schema_version":"1.0","canonical_sha256":"9f8367b14fdcd1821a9098b525d6364c743f24c074903ac86ccf064ec9774019","source":{"kind":"arxiv","id":"2404.15982","version":1},"attestation_state":"computed","paper":{"title":"Cosmological constraints on time-varying cosmological terms: A study of FLRW universe models with $\\Lambda(t)$CDM cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"J. Rayimbaev, M. Koussour, N. Myrzakulov","submitted_at":"2024-04-24T16:58:38Z","abstract_excerpt":"This paper explores models of the FLRW universe that incorporate a time-varying cosmological term $\\Lambda(t)$. Specifically, we assume a power-law form for the cosmological term as a function of the scale factor: $\\Lambda(t)=\\Lambda_{0} a(t)^{-\\alpha}$, where $\\Lambda_{0}$ represents the present value of the cosmological term. Then, we derive an exact solution to Einstein's field equations within the framework of $\\Lambda(t)$CDM cosmology and determine the best-fit values of the model parameters using the combined $H(z)$ + SNe Ia dataset and MCMC analysis. Moreover, the deceleration parameter"},"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":"2404.15982","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2024-04-24T16:58:38Z","cross_cats_sorted":[],"title_canon_sha256":"e3dee88f68877aaffb403d90a4eba4167c6db00757ba7ad835beb717af58f2e8","abstract_canon_sha256":"1a4ddeae70a7b2f41d0c09e06849fa340224bcf771695fc984a377fdd802053a"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T08:18:07.647339Z","signature_b64":"SZ+uySMM067L8CwYe6eyyHp8VFN5SqTI5Qtj/OuGycxmUcOXf68kWVPk4hfIKMTpi5gCvZOj7mH4qHWjgghOCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9f8367b14fdcd1821a9098b525d6364c743f24c074903ac86ccf064ec9774019","last_reissued_at":"2026-07-05T08:18:07.646894Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T08:18:07.646894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Cosmological constraints on time-varying cosmological terms: A study of FLRW universe models with $\\Lambda(t)$CDM cosmology","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"J. Rayimbaev, M. Koussour, N. Myrzakulov","submitted_at":"2024-04-24T16:58:38Z","abstract_excerpt":"This paper explores models of the FLRW universe that incorporate a time-varying cosmological term $\\Lambda(t)$. Specifically, we assume a power-law form for the cosmological term as a function of the scale factor: $\\Lambda(t)=\\Lambda_{0} a(t)^{-\\alpha}$, where $\\Lambda_{0}$ represents the present value of the cosmological term. Then, we derive an exact solution to Einstein's field equations within the framework of $\\Lambda(t)$CDM cosmology and determine the best-fit values of the model parameters using the combined $H(z)$ + SNe Ia dataset and MCMC analysis. Moreover, the deceleration parameter"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2404.15982","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2404.15982/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2404.15982","created_at":"2026-07-05T08:18:07.646949+00:00"},{"alias_kind":"arxiv_version","alias_value":"2404.15982v1","created_at":"2026-07-05T08:18:07.646949+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2404.15982","created_at":"2026-07-05T08:18:07.646949+00:00"},{"alias_kind":"pith_short_12","alias_value":"T6BWPMKP3TIY","created_at":"2026-07-05T08:18:07.646949+00:00"},{"alias_kind":"pith_short_16","alias_value":"T6BWPMKP3TIYEGUQ","created_at":"2026-07-05T08:18:07.646949+00:00"},{"alias_kind":"pith_short_8","alias_value":"T6BWPMKP","created_at":"2026-07-05T08:18:07.646949+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2603.25999","citing_title":"Cosmological constraints on the big bang quantum cosmology model","ref_index":35,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/T6BWPMKP3TIYEGUQTC2SLVRWJR","json":"https://pith.science/pith/T6BWPMKP3TIYEGUQTC2SLVRWJR.json","graph_json":"https://pith.science/api/pith-number/T6BWPMKP3TIYEGUQTC2SLVRWJR/graph.json","events_json":"https://pith.science/api/pith-number/T6BWPMKP3TIYEGUQTC2SLVRWJR/events.json","paper":"https://pith.science/paper/T6BWPMKP"},"agent_actions":{"view_html":"https://pith.science/pith/T6BWPMKP3TIYEGUQTC2SLVRWJR","download_json":"https://pith.science/pith/T6BWPMKP3TIYEGUQTC2SLVRWJR.json","view_paper":"https://pith.science/paper/T6BWPMKP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2404.15982&json=true","fetch_graph":"https://pith.science/api/pith-number/T6BWPMKP3TIYEGUQTC2SLVRWJR/graph.json","fetch_events":"https://pith.science/api/pith-number/T6BWPMKP3TIYEGUQTC2SLVRWJR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/T6BWPMKP3TIYEGUQTC2SLVRWJR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/T6BWPMKP3TIYEGUQTC2SLVRWJR/action/storage_attestation","attest_author":"https://pith.science/pith/T6BWPMKP3TIYEGUQTC2SLVRWJR/action/author_attestation","sign_citation":"https://pith.science/pith/T6BWPMKP3TIYEGUQTC2SLVRWJR/action/citation_signature","submit_replication":"https://pith.science/pith/T6BWPMKP3TIYEGUQTC2SLVRWJR/action/replication_record"}},"created_at":"2026-07-05T08:18:07.646949+00:00","updated_at":"2026-07-05T08:18:07.646949+00:00"}