{"as_of":"2026-08-19T16:40:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:5f864e61a8d8c6a8f97427d493b14f1cf9b43e2a6627ee4d293e6b97b203adfe","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":2,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":2,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-19T06:32:44.657259+00:00","state":"measured"},{"denominator":2,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":2,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-15T15:56:12.197383Z","state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"pith","source_observed_at":"2026-08-09T14:12:33.022031Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"2109.00327","last_updated":"2026-06-25T03:12:37Z","snapshot_observed_at":"2026-08-16T17:59:32.111046Z","submitted_at":"2021-09-01T12:19:28Z","title":"Universality in minor-closed graph classes","version":2},"cited_work":{"arxiv_id":"2109.00327","doi":null,"metadata_source":"pith","pith_arxiv_id":"2109.00327","snapshot_observed_at":"2026-08-09T14:12:33.022031Z","title":"Universality in minor-closed graph classes","venue":"math.CO","work_id":"62071bf8-5f30-4640-9974-9eaf7a5d6c68","year":2021},"citing_paper":{"arxiv_id":"2502.01927","last_updated":"2025-02-04T01:56:29Z","snapshot_observed_at":"2026-08-16T23:34:27.429670Z","submitted_at":"2025-02-04T01:56:29Z","title":"Short Paths in the Planar Graph Product Structure Theorem","version":1},"reference_index":42,"source":"pdf_text","source_observed_at":"2026-08-09T14:12:32.885752Z"},"links":{"cited_paper":"/paper/2109.00327","citing_paper":"/paper/2502.01927"},"observation_digest":"sha256:9821f5716c494ccf2f52b0394659d7708b28d4efee7050c7bb70babadc14cafc","observation_id":"721133ca-65a9-4ec9-b443-d94f638e55db","resolution":{"observed_at":"2026-08-09T14:12:33.025914Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-19T06:32:44.657259+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"2109.00327","last_updated":"2026-06-25T03:12:37Z","snapshot_observed_at":"2026-08-16T17:59:32.111046Z","submitted_at":"2021-09-01T12:19:28Z","title":"Universality in minor-closed graph classes","version":2},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"2109.00327","snapshot_observed_at":"2026-08-15T15:56:12.197383Z","title":null,"venue":null,"work_id":null,"year":2021},"citing_paper":{"arxiv_id":"2509.17820","last_updated":"2026-06-17T10:52:14Z","snapshot_observed_at":"2026-08-15T15:45:18.536059Z","submitted_at":"2025-09-22T14:14:57Z","title":"Smaller universal posets","version":3},"reference_index":31,"source":"arxiv_source","source_observed_at":"2026-08-15T15:56:12.197383Z"},"links":{"cited_paper":"/paper/2109.00327","citing_paper":"/paper/2509.17820"},"observation_digest":"sha256:9bc5f7e5e15c146a08a27042b8c813e9f9e950efd52571588c2c273da1785cb7","observation_id":"9702a2ca-8cac-4e4f-94bc-90371581008b","resolution":{"observed_at":"2026-08-15T15:56:12.197383Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"links":{"evidence":"/evidence","html":"/paper/2109.00327/citation-record","integrity":"/paper/2109.00327/integrity","json":"/paper/2109.00327/citation-record.json","paper":"/paper/2109.00327"},"outbound":[],"paper":{"arxiv_id":"2109.00327","last_updated":"2026-06-25T03:12:37Z","latest_version":2,"primary_category":"math.CO","snapshot_observed_at":"2026-08-16T17:59:32.111046Z","submitted_at":"2021-09-01T12:19:28Z","title":"Universality in minor-closed graph classes"},"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":"2026-08-19T06:32:44.657259+00:00","source":"crossref"},{"observed_at":"2026-08-19T06:32:39.956319+00:00","source":"retraction_watch"}],"thesis":"As of 19 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 2 inbound Pith citation observations for arXiv:2109.00327."}