{"as_of":"2026-08-04T08:42:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:3f3093253cdf479d025963cd0683a462686d39da4ccb7e3afaf2f03cc1c2215b","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":"2026-08-04T06:34:03.388597+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":"2026-05-25T04:32:47.321869Z","state":"measured"},{"denominator":1,"lane":"external_citation_measurements","note":"A source-named dated measurement, never combined with another source.","records_observed":0,"source":"arxiv_reference","source_observed_at":"2026-05-25T04:35:21.228657Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1905.13421","last_updated":"2021-07-26T12:12:39Z","snapshot_observed_at":"2026-07-06T07:56:56.876626Z","submitted_at":"2019-05-31T05:32:28Z","title":"Towards unification of quark and lepton flavors in $A_4$ modular invariance","version":6},"cited_work":{"arxiv_id":"1905.13421","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"1905.13421","snapshot_observed_at":"2026-06-05T21:23:00.469572Z","title":"Okada and M","venue":null,"work_id":"7bb90114-2609-4f00-839d-d5eb4eef624e","year":2021},"citing_paper":{"arxiv_id":"2605.23202","last_updated":"2026-05-22T03:36:44Z","snapshot_observed_at":"2026-07-06T23:33:24.215365Z","submitted_at":"2026-05-22T03:36:44Z","title":"Zee models with a non-invertible $Z_M$ symmetry","version":1},"reference_index":68,"source":"pdf_text","source_observed_at":"2026-05-25T04:32:47.321869Z"},"links":{"cited_paper":"/paper/1905.13421","citing_paper":"/paper/2605.23202"},"observation_digest":"sha256:81e5c3deb422a88bb41d30ee2aead4a545e6339e54d13a10806d35c31615b470","observation_id":"c1758454-cf71-4839-b36a-ae7428cb22ec","resolution":{"observed_at":"2026-05-25T04:35:21.231638Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-04T06:34:03.388597+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-04T06:34:03.388597+00:00","source":"crossref"},{"observed_at":"2026-08-04T06:33:57.428241+00:00","source":"retraction_watch"}],"state":"measured"}}],"links":{"evidence":"/evidence","html":"/paper/1905.13421/citation-record","integrity":"/paper/1905.13421/integrity","json":"/paper/1905.13421/citation-record.json","paper":"/paper/1905.13421"},"outbound":[],"paper":{"arxiv_id":"1905.13421","last_updated":"2021-07-26T12:12:39Z","latest_version":6,"primary_category":"hep-ph","snapshot_observed_at":"2026-07-06T07:56:56.876626Z","submitted_at":"2019-05-31T05:32:28Z","title":"Towards unification of quark and lepton flavors in $A_4$ modular invariance"},"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":"2026-08-04T06:34:03.388597+00:00","source":"crossref"},{"observed_at":"2026-08-04T06:33:57.428241+00:00","source":"retraction_watch"}],"thesis":"As of 4 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 1 inbound Pith citation observation for arXiv:1905.13421."}