{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:O6T2UBITGHCLXVM2VWAOZ3OQUQ","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"39ab03097c05ddb404cabe357712c43237f53163d4d9003432a1dd3341b5e8dc","cross_cats_sorted":["cs.NA","physics.comp-ph"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"math.NA","submitted_at":"2022-06-01T18:44:04Z","title_canon_sha256":"96eee622ea80cf5f514e95195fff94e2287a1974e92201b09e7f727d6a985ba8"},"schema_version":"1.0","source":{"id":"2206.00708","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2206.00708","created_at":"2026-07-05T07:46:58Z"},{"alias_kind":"arxiv_version","alias_value":"2206.00708v3","created_at":"2026-07-05T07:46:58Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2206.00708","created_at":"2026-07-05T07:46:58Z"},{"alias_kind":"pith_short_12","alias_value":"O6T2UBITGHCL","created_at":"2026-07-05T07:46:58Z"},{"alias_kind":"pith_short_16","alias_value":"O6T2UBITGHCLXVM2","created_at":"2026-07-05T07:46:58Z"},{"alias_kind":"pith_short_8","alias_value":"O6T2UBIT","created_at":"2026-07-05T07:46:58Z"}],"graph_snapshots":[{"event_id":"sha256:69159b145df30b99764affd05ad41cfcc434a64f02b69d45823ff56abb8549d5","target":"graph","created_at":"2026-07-05T07:46:58Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2206.00708/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Acoustic wave propagation through a homogeneous material embedded in an unbounded medium can be formulated as a boundary integral equation and accurately solved with the boundary element method. The computational efficiency deteriorates at high frequencies due to the increase in mesh size with a fixed number of elements per wavelength and also at high material contrasts due to the ill-conditioning of the linear system. This study presents the design of boundary element methods feasible for nonconforming surface meshes at the material interface. The nonconforming algorithm allows for independen","authors_text":"Elwin van 't Wout","cross_cats":["cs.NA","physics.comp-ph"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"math.NA","submitted_at":"2022-06-01T18:44:04Z","title":"The Boundary Element Method for Acoustic Transmission with Nonconforming Grids"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2206.00708","kind":"arxiv","version":3},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:d076a3c1a8c4126f8dcbe06ab6137a8907f64bd751ae6efd50d2408d1d2e452e","target":"record","created_at":"2026-07-05T07:46:58Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"39ab03097c05ddb404cabe357712c43237f53163d4d9003432a1dd3341b5e8dc","cross_cats_sorted":["cs.NA","physics.comp-ph"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"math.NA","submitted_at":"2022-06-01T18:44:04Z","title_canon_sha256":"96eee622ea80cf5f514e95195fff94e2287a1974e92201b09e7f727d6a985ba8"},"schema_version":"1.0","source":{"id":"2206.00708","kind":"arxiv","version":3}},"canonical_sha256":"77a7aa051331c4bbd59aad80ecedd0a42c2a5a3ba28540ed8bb1936b69688f23","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"77a7aa051331c4bbd59aad80ecedd0a42c2a5a3ba28540ed8bb1936b69688f23","first_computed_at":"2026-07-05T07:46:58.997466Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T07:46:58.997466Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"4lAgbirjdZUQHtwKsqpnGDTXmDQS6+uykm5rSth6CE8dbNOT78D2NB3CNFHrvgiwJfrI2uuH3oLbY5reX8uSDw==","signature_status":"signed_v1","signed_at":"2026-07-05T07:46:58.997905Z","signed_message":"canonical_sha256_bytes"},"source_id":"2206.00708","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d076a3c1a8c4126f8dcbe06ab6137a8907f64bd751ae6efd50d2408d1d2e452e","sha256:69159b145df30b99764affd05ad41cfcc434a64f02b69d45823ff56abb8549d5"],"state_sha256":"f7ea629abf7d4621d35360b47ae02b3239240ce98a8229b40c48684e5e25c0ff"}