{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2010:QMB3IK75JXM6DA6CN2FFLGBJBY","short_pith_number":"pith:QMB3IK75","schema_version":"1.0","canonical_sha256":"8303b42bfd4dd9e183c26e8a5598290e17181a43d51a15bc4cfeeceebad4c710","source":{"kind":"arxiv","id":"1010.2299","version":2},"attestation_state":"computed","paper":{"title":"On the fairness of the main galaxy sample of SDSS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Bin Ma, Jun Pan, Kelai Meng, Longlong Feng","submitted_at":"2010-10-12T04:53:57Z","abstract_excerpt":"Flux-limited and volume-limited galaxy samples are constructed from SDSS data releases DR4, DR6 and DR7 for statistical analysis. The two-point correlation functions $\\xi(s)$, monopole of three-point correlation functions $\\zeta_0$, projected two-point correlation function $w_p$ and pairwise velocity dispersion $\\sigma_{12}$ are measured to test if galaxy samples are fair for these statistics. We find that with increment of sky coverage of SDSS, $\\xi(s)$ of flux-limited sample is extremely robust and insensitive to local structures at low redshift. But for volume-limited samples fainter than $"},"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":"1010.2299","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"astro-ph.CO","submitted_at":"2010-10-12T04:53:57Z","cross_cats_sorted":[],"title_canon_sha256":"041433f83348071f3723d1adca734a85ac9257cf46ebf6565cbdfee6578b0bf3","abstract_canon_sha256":"45b9f3214794bdff03091cd30e46c1642c72b3cfe152273e72e71b473559fe83"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:05:06.196063Z","signature_b64":"/etXkFqRhBWE2OepkZ9cro3J9JyIB9fUZ93XTbKMmFJnxJHyJWvsBPeV2n9phVpPUizQMKWcTb99pOjeeHuWCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8303b42bfd4dd9e183c26e8a5598290e17181a43d51a15bc4cfeeceebad4c710","last_reissued_at":"2026-05-18T02:05:06.195298Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:05:06.195298Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"On the fairness of the main galaxy sample of SDSS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"astro-ph.CO","authors_text":"Bin Ma, Jun Pan, Kelai Meng, Longlong Feng","submitted_at":"2010-10-12T04:53:57Z","abstract_excerpt":"Flux-limited and volume-limited galaxy samples are constructed from SDSS data releases DR4, DR6 and DR7 for statistical analysis. The two-point correlation functions $\\xi(s)$, monopole of three-point correlation functions $\\zeta_0$, projected two-point correlation function $w_p$ and pairwise velocity dispersion $\\sigma_{12}$ are measured to test if galaxy samples are fair for these statistics. We find that with increment of sky coverage of SDSS, $\\xi(s)$ of flux-limited sample is extremely robust and insensitive to local structures at low redshift. But for volume-limited samples fainter than $"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1010.2299","kind":"arxiv","version":2},"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":"1010.2299","created_at":"2026-05-18T02:05:06.195451+00:00"},{"alias_kind":"arxiv_version","alias_value":"1010.2299v2","created_at":"2026-05-18T02:05:06.195451+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1010.2299","created_at":"2026-05-18T02:05:06.195451+00:00"},{"alias_kind":"pith_short_12","alias_value":"QMB3IK75JXM6","created_at":"2026-05-18T12:26:12.377268+00:00"},{"alias_kind":"pith_short_16","alias_value":"QMB3IK75JXM6DA6C","created_at":"2026-05-18T12:26:12.377268+00:00"},{"alias_kind":"pith_short_8","alias_value":"QMB3IK75","created_at":"2026-05-18T12:26:12.377268+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/QMB3IK75JXM6DA6CN2FFLGBJBY","json":"https://pith.science/pith/QMB3IK75JXM6DA6CN2FFLGBJBY.json","graph_json":"https://pith.science/api/pith-number/QMB3IK75JXM6DA6CN2FFLGBJBY/graph.json","events_json":"https://pith.science/api/pith-number/QMB3IK75JXM6DA6CN2FFLGBJBY/events.json","paper":"https://pith.science/paper/QMB3IK75"},"agent_actions":{"view_html":"https://pith.science/pith/QMB3IK75JXM6DA6CN2FFLGBJBY","download_json":"https://pith.science/pith/QMB3IK75JXM6DA6CN2FFLGBJBY.json","view_paper":"https://pith.science/paper/QMB3IK75","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1010.2299&json=true","fetch_graph":"https://pith.science/api/pith-number/QMB3IK75JXM6DA6CN2FFLGBJBY/graph.json","fetch_events":"https://pith.science/api/pith-number/QMB3IK75JXM6DA6CN2FFLGBJBY/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QMB3IK75JXM6DA6CN2FFLGBJBY/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QMB3IK75JXM6DA6CN2FFLGBJBY/action/storage_attestation","attest_author":"https://pith.science/pith/QMB3IK75JXM6DA6CN2FFLGBJBY/action/author_attestation","sign_citation":"https://pith.science/pith/QMB3IK75JXM6DA6CN2FFLGBJBY/action/citation_signature","submit_replication":"https://pith.science/pith/QMB3IK75JXM6DA6CN2FFLGBJBY/action/replication_record"}},"created_at":"2026-05-18T02:05:06.195451+00:00","updated_at":"2026-05-18T02:05:06.195451+00:00"}