{"as_of":"2026-08-17T15:49:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:b8779b0608a8508427300a1d3c837a5120e747157b668ca6eeb580a4e8db716c","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":"2026-08-17T06:30:58.91139+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":"2026-08-14T13:01:40.711392Z","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":"2026-08-14T13:01:40.926184Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1902.02283","last_updated":"2019-02-06T17:19:04Z","snapshot_observed_at":"2026-08-14T17:20:07.784864Z","submitted_at":"2019-02-06T17:19:04Z","title":"On maximum volume submatrices and cross approximation for symmetric semidefinite and diagonally dominant matrices","version":1},"cited_work":{"arxiv_id":"1902.02283","doi":null,"metadata_source":"pith","pith_arxiv_id":"1902.02283","snapshot_observed_at":"2026-08-14T13:01:40.926184Z","title":"On maximum volume submatrices and cross approximation for symmetric semidefinite and diagonally dominant matrices","venue":"math.NA","work_id":"d88b0b20-77ba-4743-b390-ecd344b8b041","year":2019},"citing_paper":{"arxiv_id":"1908.06059","last_updated":"2019-08-16T17:08:08Z","snapshot_observed_at":"2026-08-16T14:21:56.185432Z","submitted_at":"2019-08-16T17:08:08Z","title":"Low-rank approximation in the Frobenius norm by column and row subset selection","version":1},"reference_index":12,"source":"pdf_text","source_observed_at":"2026-08-14T13:01:40.711392Z"},"links":{"cited_paper":"/paper/1902.02283","citing_paper":"/paper/1908.06059"},"observation_digest":"sha256:db10b7d67fe82c9f58914d35ca88320ba9edf9117d94c283b99336d994746a58","observation_id":"11511ce7-c228-4073-8ec0-d3bca94e5d33","resolution":{"observed_at":"2026-08-14T13:01:40.931852Z","resolver_source":"local_arxiv","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-17T06:30:58.91139+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-17T06:30:58.91139+00:00","source":"crossref"},{"observed_at":"2026-08-17T06:30:54.323127+00:00","source":"retraction_watch"}],"state":"measured"}}],"links":{"evidence":"/evidence","html":"/paper/1902.02283/citation-record","integrity":"/paper/1902.02283/integrity","json":"/paper/1902.02283/citation-record.json","paper":"/paper/1902.02283"},"outbound":[],"paper":{"arxiv_id":"1902.02283","last_updated":"2019-02-06T17:19:04Z","latest_version":1,"primary_category":"math.NA","snapshot_observed_at":"2026-08-14T17:20:07.784864Z","submitted_at":"2019-02-06T17:19:04Z","title":"On maximum volume submatrices and cross approximation for symmetric semidefinite and diagonally dominant matrices"},"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":"2026-08-17T06:30:58.91139+00:00","source":"crossref"},{"observed_at":"2026-08-17T06:30:54.323127+00:00","source":"retraction_watch"}],"thesis":"As of 17 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 1 inbound Pith citation observation for arXiv:1902.02283."}