{"as_of":"2026-08-14T08:31:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:20a67931c2bd66ba7cb4af1227c30e96f62c548dffcce699264740fd338e81c9","coverage":[{"denominator":6,"lane":"reference_resolution","note":"Typed states for the displayed outbound observations.","records_observed":6,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-14T05:16:19.444187Z","state":"measured"},{"denominator":6,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":6,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-14T06:32:32.682623+00:00","state":"measured"},{"denominator":0,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":0,"source":"paper_references, paper_reference_links","source_observed_at":null,"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":[],"links":{"evidence":"/evidence","html":"/paper/1909.02045/citation-record","integrity":"/paper/1909.02045/integrity","json":"/paper/1909.02045/citation-record.json","paper":"/paper/1909.02045"},"outbound":[{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T05:16:19.605711Z","title":null,"venue":null,"work_id":"339c537b-636b-4cc9-8e6f-f562f443d603","year":1966},"citing_paper":{"arxiv_id":"1909.02045","last_updated":"2020-11-12T15:30:44Z","snapshot_observed_at":"2026-08-14T04:59:24.437735Z","submitted_at":"2019-09-04T18:40:42Z","title":"The smallest matroids with no large independent flat","version":2},"reference_index":1,"source":"pdf_text","source_observed_at":"2026-08-14T05:16:19.407908Z"},"links":{"citing_paper":"/paper/1909.02045"},"observation_digest":"sha256:c6ac45b9ddfd1d31d236cbc02033d32c337a03f6f534f0e4abd719decdea9c2a","observation_id":"f77917ba-1d88-4e8d-8747-636e0b840d0b","resolution":{"observed_at":"2026-08-14T05:16:19.612144Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-14T06:32:32.682623+00:00","source":"crossref"},{"observed_at":"2026-08-14T06:32:18.44784+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1806.04188","last_updated":"2019-11-13T16:39:29Z","snapshot_observed_at":"2026-07-06T06:44:13.430115Z","submitted_at":"2018-06-11T18:57:20Z","title":"The structure of binary matroids with no induced claw or Fano plane restriction","version":4},"cited_work":{"arxiv_id":"1806.04188","doi":null,"metadata_source":"pith","pith_arxiv_id":"1806.04188","snapshot_observed_at":"2026-08-14T05:16:19.523516Z","title":"The structure of binary matroids with no induced claw or Fano plane restriction","venue":"math.CO","work_id":"b76a1fb4-38e5-4702-a893-cbe3348644a2","year":2018},"citing_paper":{"arxiv_id":"1909.02045","last_updated":"2020-11-12T15:30:44Z","snapshot_observed_at":"2026-08-14T04:59:24.437735Z","submitted_at":"2019-09-04T18:40:42Z","title":"The smallest matroids with no large independent flat","version":2},"reference_index":2,"source":"pdf_text","source_observed_at":"2026-08-14T05:16:19.416019Z"},"links":{"cited_paper":"/paper/1806.04188","citing_paper":"/paper/1909.02045"},"observation_digest":"sha256:eeac506423e4b8fd7987bb5a0bf65c713929667d1551e6a1a97386a36b189cb8","observation_id":"617ee3bf-7316-4f69-8ae9-7a09f7d5b601","resolution":{"observed_at":"2026-08-14T05:16:19.530251Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-14T06:32:32.682623+00:00","source":"crossref"},{"observed_at":"2026-08-14T06:32:18.44784+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1807.11543","last_updated":"2018-07-30T19:37:23Z","snapshot_observed_at":"2026-08-07T21:23:11.271886Z","submitted_at":"2018-07-30T19:37:23Z","title":"The structure of claw-free binary matroids","version":1},"cited_work":{"arxiv_id":"1807.11543","doi":null,"metadata_source":"pith","pith_arxiv_id":"1807.11543","snapshot_observed_at":"2026-08-14T05:16:19.492659Z","title":"The structure of claw-free binary matroids","venue":"math.CO","work_id":"a384f676-485d-4be5-8179-880ee0b0dbf1","year":2018},"citing_paper":{"arxiv_id":"1909.02045","last_updated":"2020-11-12T15:30:44Z","snapshot_observed_at":"2026-08-14T04:59:24.437735Z","submitted_at":"2019-09-04T18:40:42Z","title":"The smallest matroids with no large independent flat","version":2},"reference_index":3,"source":"pdf_text","source_observed_at":"2026-08-14T05:16:19.422658Z"},"links":{"cited_paper":"/paper/1807.11543","citing_paper":"/paper/1909.02045"},"observation_digest":"sha256:fd85ebe9100eb5110b37ee6cbb6fd6f66a5b8421a67c10cbf59bafef5872d7b0","observation_id":"ce5d3bf0-c9a7-469d-8f1d-7790d79b6951","resolution":{"observed_at":"2026-08-14T05:16:19.501921Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-14T06:32:32.682623+00:00","source":"crossref"},{"observed_at":"2026-08-14T06:32:18.44784+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T05:16:19.585495Z","title":null,"venue":null,"work_id":"c32f8381-acbf-411e-b66a-e41ff80006b3","year":2011},"citing_paper":{"arxiv_id":"1909.02045","last_updated":"2020-11-12T15:30:44Z","snapshot_observed_at":"2026-08-14T04:59:24.437735Z","submitted_at":"2019-09-04T18:40:42Z","title":"The smallest matroids with no large independent flat","version":2},"reference_index":4,"source":"pdf_text","source_observed_at":"2026-08-14T05:16:19.431377Z"},"links":{"citing_paper":"/paper/1909.02045"},"observation_digest":"sha256:b5fbaea3a29b83123105be114d5c0fd366278a5fe90ea072d22a1586cdbe56f1","observation_id":"88c949d3-0cc7-4daa-89d2-4cfb1576a555","resolution":{"observed_at":"2026-08-14T05:16:19.592286Z","resolver_source":"raw_fallback","status":"unresolved"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-14T06:32:32.682623+00:00","source":"crossref"},{"observed_at":"2026-08-14T06:32:18.44784+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T05:16:19.563093Z","title":"Tur´ an, On an extremal problem in graph theory, Matematikai ´ es Fizikai Lapok(1941) (in Hungarian), 436—452","venue":null,"work_id":"cd5ffeff-e6ed-466f-95d6-04a086de6db8","year":1941},"citing_paper":{"arxiv_id":"1909.02045","last_updated":"2020-11-12T15:30:44Z","snapshot_observed_at":"2026-08-14T04:59:24.437735Z","submitted_at":"2019-09-04T18:40:42Z","title":"The smallest matroids with no large independent flat","version":2},"reference_index":5,"source":"pdf_text","source_observed_at":"2026-08-14T05:16:19.437256Z"},"links":{"citing_paper":"/paper/1909.02045"},"observation_digest":"sha256:36cb6acf6b8ff662158b5865d54b78bde7346d28391534ca25712c0a3cae74e7","observation_id":"2c970f33-a57c-4fc4-9ffa-049be634e29b","resolution":{"observed_at":"2026-08-14T05:16:19.570600Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-14T06:32:32.682623+00:00","source":"crossref"},{"observed_at":"2026-08-14T06:32:18.44784+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":null,"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":"raw_reference","pith_arxiv_id":null,"snapshot_observed_at":"2026-08-14T05:16:19.543269Z","title":"Tutte, Lectures on matroids, Journal of Research of the National Bureau of Standards (1965), 1—47","venue":null,"work_id":"0a49d730-710c-4138-95bf-2c53768d0ae7","year":1965},"citing_paper":{"arxiv_id":"1909.02045","last_updated":"2020-11-12T15:30:44Z","snapshot_observed_at":"2026-08-14T04:59:24.437735Z","submitted_at":"2019-09-04T18:40:42Z","title":"The smallest matroids with no large independent flat","version":2},"reference_index":6,"source":"pdf_text","source_observed_at":"2026-08-14T05:16:19.444187Z"},"links":{"citing_paper":"/paper/1909.02045"},"observation_digest":"sha256:635735a74a7d577feb87553a523b095b08deb06ae915b8378bef6339dd2eec5e","observation_id":"e95164b6-e06d-452a-9c1d-a0b3fe8f60f6","resolution":{"observed_at":"2026-08-14T05:16:19.549240Z","resolver_source":"raw_fallback","status":"verified_fuzzy"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-14T06:32:32.682623+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-14T06:32:32.682623+00:00","source":"crossref"},{"observed_at":"2026-08-14T06:32:18.44784+00:00","source":"retraction_watch"}],"state":"measured"}}],"paper":{"arxiv_id":"1909.02045","last_updated":"2020-11-12T15:30:44Z","latest_version":2,"primary_category":"math.CO","snapshot_observed_at":"2026-08-14T04:59:24.437735Z","submitted_at":"2019-09-04T18:40:42Z","title":"The smallest matroids with no large independent flat"},"reference_resolution":{"displayed":6,"state_counts":{"malformed_identifier":0,"metadata_mismatch":0,"parse_uncertain":0,"unresolved":2,"verified_exact":2,"verified_fuzzy":2},"total_outbound_references":6},"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":"2026-08-14T06:32:32.682623+00:00","source":"crossref"},{"observed_at":"2026-08-14T06:32:18.44784+00:00","source":"retraction_watch"}],"thesis":"As of 14 August 2026, this Paper Citation Record lists 6 of 6 outbound references and 0 inbound Pith citation observations for arXiv:1909.02045."}