{"as_of":"2026-08-15T23:55:00Z","caps":{"database_statements":6,"inbound":100,"outbound":100},"context_digest":"sha256:6b8896caf92809c11f94f34bca034bd6e7006e770d20f4f217074e1418640325","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":3,"lane":"standing_notices","note":"One-hop event checks from named stored sources.","records_observed":3,"source":"scholarly_work_events, retraction_status_cache","source_observed_at":"2026-08-15T06:32:42.880941+00:00","state":"measured"},{"denominator":3,"lane":"inbound_itemization","note":"Pith citing papers itemized under the disclosed page cap.","records_observed":3,"source":"paper_references, paper_reference_links","source_observed_at":"2026-08-14T13:59:28.115175Z","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":"2026-05-11T17:11:18.564588Z","state":"measured"}],"external_citation_measurements":[],"inbound":[{"citation":{"cited_paper":{"arxiv_id":"1806.02167","last_updated":"2018-06-06T13:23:27Z","snapshot_observed_at":"2026-08-14T19:06:54.105251Z","submitted_at":"2018-06-06T13:23:27Z","title":"Self-duality, helicity conservation and normal ordering in nonlinear QED","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1806.02167","snapshot_observed_at":"2026-08-14T13:59:28.115175Z","title":"Self-duality, helicity conservation and normal o rdering in nonlinear QED,","venue":null,"work_id":null,"year":2018},"citing_paper":{"arxiv_id":"1908.04120","last_updated":"2019-09-03T06:47:27Z","snapshot_observed_at":"2026-08-15T06:12:48.686217Z","submitted_at":"2019-08-12T12:38:29Z","title":"Manifestly duality-invariant interactions in diverse dimensions","version":2},"reference_index":21,"source":"pdf_text","source_observed_at":"2026-08-14T13:59:28.115175Z"},"links":{"cited_paper":"/paper/1806.02167","citing_paper":"/paper/1908.04120"},"observation_digest":"sha256:8251314dd0a9dd482d463b1f4e4bdfd099088dc2fd51a0f41cdc2223cedeb5fb","observation_id":"95a0bde9-eedd-45fc-a288-696219e70729","resolution":{"observed_at":"2026-08-14T13:59:28.115175Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}},{"citation":{"cited_paper":{"arxiv_id":"1806.02167","last_updated":"2018-06-06T13:23:27Z","snapshot_observed_at":"2026-08-14T19:06:54.105251Z","submitted_at":"2018-06-06T13:23:27Z","title":"Self-duality, helicity conservation and normal ordering in nonlinear QED","version":1},"cited_work":{"arxiv_id":"1806.02167","doi":null,"metadata_source":"arxiv_reference","pith_arxiv_id":"1806.02167","snapshot_observed_at":"2026-07-04T23:09:01.398777Z","title":"Novotný, Self-duality, helicity conservation and normal ordering in nonlinear QED, Phys","venue":null,"work_id":"528a306e-21f6-4a9b-8095-cd97d3b293b6","year":2018},"citing_paper":{"arxiv_id":"2605.03018","last_updated":"2026-05-04T18:00:10Z","snapshot_observed_at":"2026-08-11T06:51:34.998226Z","submitted_at":"2026-05-04T18:00:10Z","title":"Gravitational electric-magnetic duality at the light ring and quasinormal mode isospectrality in effective field theories","version":1},"reference_index":82,"source":"pdf_text","source_observed_at":"2026-05-08T17:48:10.296695Z"},"links":{"cited_paper":"/paper/1806.02167","citing_paper":"/paper/2605.03018"},"observation_digest":"sha256:c04117f6d37f47309c97eddc8d4baad79a92fe21c373116c4d7102156c051b9f","observation_id":"96cbdb10-7ac3-4f74-bce0-a60b1761e8e1","resolution":{"observed_at":"2026-07-04T23:09:01.398777Z","resolver_source":"arxiv_id","status":"verified_exact"},"standing_notice":{"events":[],"observation":"No event found in the named queried sources as of 2026-08-15T06:32:42.880941+00:00.","reason":null,"source_receipts":[{"observed_at":"2026-08-15T06:32:42.880941+00:00","source":"crossref"},{"observed_at":"2026-08-15T06:32:39.529945+00:00","source":"retraction_watch"}],"state":"measured"}},{"citation":{"cited_paper":{"arxiv_id":"1806.02167","last_updated":"2018-06-06T13:23:27Z","snapshot_observed_at":"2026-08-14T19:06:54.105251Z","submitted_at":"2018-06-06T13:23:27Z","title":"Self-duality, helicity conservation and normal ordering in nonlinear QED","version":1},"cited_work":{"arxiv_id":null,"doi":null,"metadata_source":null,"pith_arxiv_id":"1806.02167","snapshot_observed_at":"2026-08-08T16:27:45.443528Z","title":"Novotn´ y,Self-duality, helicity conservation and normal ordering in nonlinear QED,Phys","venue":null,"work_id":null,"year":2018},"citing_paper":{"arxiv_id":"2608.05285","last_updated":"2026-08-05T18:00:02Z","snapshot_observed_at":"2026-08-13T11:16:49.774766Z","submitted_at":"2026-08-05T18:00:02Z","title":"$N$-Photon Amplitudes in EFT from Recursion Relations and Effective Vertices","version":1},"reference_index":76,"source":"pdf_text","source_observed_at":"2026-08-08T16:27:45.443528Z"},"links":{"cited_paper":"/paper/1806.02167","citing_paper":"/paper/2608.05285"},"observation_digest":"sha256:3ccfe982737b0d468df286bee4834ec96b2061166bb17da0e2f039d966ae4b4c","observation_id":"0239176e-edbe-46dc-8797-57d3bf6e8192","resolution":{"observed_at":"2026-08-08T16:27:45.443528Z","resolver_source":null,"status":"unresolved"},"standing_notice":{"events":[],"reason":"canonical_work_link_unavailable","source_receipts":[],"state":"unavailable"}}],"links":{"evidence":"/evidence","html":"/paper/1806.02167/citation-record","integrity":"/paper/1806.02167/integrity","json":"/paper/1806.02167/citation-record.json","paper":"/paper/1806.02167"},"outbound":[],"paper":{"arxiv_id":"1806.02167","last_updated":"2018-06-06T13:23:27Z","latest_version":1,"primary_category":"hep-th","snapshot_observed_at":"2026-08-14T19:06:54.105251Z","submitted_at":"2018-06-06T13:23:27Z","title":"Self-duality, helicity conservation and normal ordering in nonlinear QED"},"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":"2026-08-15T06:32:42.880941+00:00","source":"crossref"},{"observed_at":"2026-08-15T06:32:39.529945+00:00","source":"retraction_watch"}],"thesis":"As of 15 August 2026, this Paper Citation Record lists 0 of 0 outbound references and 3 inbound Pith citation observations for arXiv:1806.02167."}