{"as_of":"2026-08-20T22:19:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:04022015341d6cf42cb64cc5f9400ea4b2618c4b50e94547cca34fa4a30208de","coverage":[{"denominator":0,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"state":"measured"},{"denominator":1,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":1,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-20T06:33:59.587034+00:00","state":"measured"},{"denominator":1,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":1,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-04T19:54:20.784768Z","state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"cited_works","source_observed_at":null,"state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1804.08028","last_updated":"2020-05-25T10:06:14Z","snapshot_observed_at":"2026-08-15T14:24:44.914979Z","submitted_at":"2018-04-21T21:01:17Z","title":"Ramanujan Graphs and Digraphs","version":4},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1804.08028","snapshot_observed_at":"2026-08-04T19:54:20.784768Z","title":"[PRTC20] T","venue":null,"work_id":null,"year":2020},"citing_paper":{"arxiv_id":"2509.09047","last_updated":"2025-09-10T22:52:19Z","snapshot_observed_at":"2026-08-15T20:54:14.429928Z","submitted_at":"2025-09-10T22:52:19Z","title":"Multi-Qubit Golden Gates","version":1},"reference_index":2019,"source":"pdf_text","source_observed_at":"2026-08-04T19:54:20.784768Z"},"links":{"cited_paper":"/paper/1804.08028","citing_paper":"/paper/2509.09047"},"observation_digest":"sha256:efeaaedc9b38603e4ab9abd5ffd56a90e8e4b41bcd4210966ec8b0c8540e570d","observation_id":"14cbb0f9-c3b0-4d09-880b-7cbcb6c11de2","resolution":{"observed_at":"2026-08-04T19:54:20.784768Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"links":{"evidence":"/evidence","html":"/paper/1804.08028/citation-record","integrity":"/paper/1804.08028/integrity","json":"/paper/1804.08028/citation-record.json","paper":"/paper/1804.08028"},"outbound":[],"paper":{"arxiv_id":"1804.08028","last_updated":"2020-05-25T10:06:14Z","latest_version":4,"primary_category":"math.CO","snapshot_observed_at":"2026-08-15T14:24:44.914979Z","submitted_at":"2018-04-21T21:01:17Z","title":"Ramanujan Graphs and Digraphs"},"reference_resolution":{"displayed":0,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":0,"verified_exact":0,"verified_fuzzy":0},"total_outbound_references":0},"refusal":"A citation records a reference. It does not transfer a finding from one paper to another.","schema":"pith.paper-citation-record.v1","standing_sources":[{"observed_at":"2026-08-20T06:33:59.587034+00:00","source":"crossref"},{"observed_at":"2026-08-20T06:33:54.927442+00:00","source":"retraction_watch"}],"thesis":"As of 20 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 1 inbound Pith citation observation for arXiv:1804.08028."}