{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:SJHTH6X3IDLMU4XM62V42Q6DW6","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":"584b0ec2ff1d036f68e20ccdf790f577070ecbf9757810d7db1fecafe59cfb39","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-09-07T17:03:18Z","title_canon_sha256":"93a88d0ca1541791c4789d9b72705c5823910990419f3334e3c0868a81f32630"},"schema_version":"1.0","source":{"id":"1709.02356","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.02356","created_at":"2026-05-18T00:21:54Z"},{"alias_kind":"arxiv_version","alias_value":"1709.02356v2","created_at":"2026-05-18T00:21:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.02356","created_at":"2026-05-18T00:21:54Z"},{"alias_kind":"pith_short_12","alias_value":"SJHTH6X3IDLM","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_16","alias_value":"SJHTH6X3IDLMU4XM","created_at":"2026-05-18T12:31:43Z"},{"alias_kind":"pith_short_8","alias_value":"SJHTH6X3","created_at":"2026-05-18T12:31:43Z"}],"graph_snapshots":[{"event_id":"sha256:67a32e14ff9e29fc4553feb88de3173e9db6e911662101186cc425495c15bee7","target":"graph","created_at":"2026-05-18T00:21:54Z","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 study the performance of the latest $H(z)$ data in constraining the cosmological parameters of different cosmological models, including that of Chevalier-Polarski-Linder $w_{0}w_{1}$ parametrization. First, we introduce a statistical procedure in which the chi-square estimator is not affected by the value of the Hubble constant. As a result, we find that the $H(z)$ data do not rule out the possibility of either non-flat models or dynamical dark energy cosmological models. However, we verify that the time varying equation of state parameter $w(z)$ is not constrained by the current expansion ","authors_text":"Fotios Anagnostopoulos, Spyros Basilakos","cross_cats":["gr-qc","hep-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-09-07T17:03:18Z","title":"Constraining the dark energy models with H(z) data: an approach independent of $H_{0}$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.02356","kind":"arxiv","version":2},"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":"sha256:91a95768751b23b136a478a9a2c17e1e94e1b9caa16c60b9e044264df0b58326","target":"record","created_at":"2026-05-18T00:21:54Z","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":"584b0ec2ff1d036f68e20ccdf790f577070ecbf9757810d7db1fecafe59cfb39","cross_cats_sorted":["gr-qc","hep-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2017-09-07T17:03:18Z","title_canon_sha256":"93a88d0ca1541791c4789d9b72705c5823910990419f3334e3c0868a81f32630"},"schema_version":"1.0","source":{"id":"1709.02356","kind":"arxiv","version":2}},"canonical_sha256":"924f33fafb40d6ca72ecf6abcd43c3b79fd6ed3c750f8317d94ea12d3c53acb3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"924f33fafb40d6ca72ecf6abcd43c3b79fd6ed3c750f8317d94ea12d3c53acb3","first_computed_at":"2026-05-18T00:21:54.685746Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:54.685746Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"uO8x+TkfZ986nnWILTvibv5vPBGqgv5xnczhS6xHCm+yqv9xjtA7bLDstzBvsJmFG6FW2FptwNAtj2tpYNrGCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:54.686281Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.02356","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:91a95768751b23b136a478a9a2c17e1e94e1b9caa16c60b9e044264df0b58326","sha256:67a32e14ff9e29fc4553feb88de3173e9db6e911662101186cc425495c15bee7"],"state_sha256":"edf8dc72543a169f8ec51db716cb689bcff110be209683812ddc9855b59f858d"}