{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2024:746Z2XDLTFN7MXNAE6CGKHNYP2","short_pith_number":"pith:746Z2XDL","canonical_record":{"source":{"id":"2402.08059","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-02-12T20:49:27Z","cross_cats_sorted":["astro-ph.IM","math-ph","math.MP"],"title_canon_sha256":"69e420a2390796aed1a1c5b86977966d0395bec294daf188690c93c2883947b2","abstract_canon_sha256":"5008347f041f2ac599b9f7fbd5fb629236ff72be278fe273c41c288fcb9a3594"},"schema_version":"1.0"},"canonical_sha256":"ff3d9d5c6b995bf65da02784651db87ead7ea1c1955064621497ddc43d2c73e3","source":{"kind":"arxiv","id":"2402.08059","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.08059","created_at":"2026-07-05T11:36:19Z"},{"alias_kind":"arxiv_version","alias_value":"2402.08059v1","created_at":"2026-07-05T11:36:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.08059","created_at":"2026-07-05T11:36:19Z"},{"alias_kind":"pith_short_12","alias_value":"746Z2XDLTFN7","created_at":"2026-07-05T11:36:19Z"},{"alias_kind":"pith_short_16","alias_value":"746Z2XDLTFN7MXNA","created_at":"2026-07-05T11:36:19Z"},{"alias_kind":"pith_short_8","alias_value":"746Z2XDL","created_at":"2026-07-05T11:36:19Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2024:746Z2XDLTFN7MXNAE6CGKHNYP2","target":"record","payload":{"canonical_record":{"source":{"id":"2402.08059","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-02-12T20:49:27Z","cross_cats_sorted":["astro-ph.IM","math-ph","math.MP"],"title_canon_sha256":"69e420a2390796aed1a1c5b86977966d0395bec294daf188690c93c2883947b2","abstract_canon_sha256":"5008347f041f2ac599b9f7fbd5fb629236ff72be278fe273c41c288fcb9a3594"},"schema_version":"1.0"},"canonical_sha256":"ff3d9d5c6b995bf65da02784651db87ead7ea1c1955064621497ddc43d2c73e3","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:36:19.216702Z","signature_b64":"X/0Wp9qAAqPg+n5x68DrCF57IgwOr2k8+QyqqhoRsO5wa/i/ATrsWHyI9dsdDv4DyxGkedTD0r/RLBRIOdPmBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ff3d9d5c6b995bf65da02784651db87ead7ea1c1955064621497ddc43d2c73e3","last_reissued_at":"2026-07-05T11:36:19.216218Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:36:19.216218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2402.08059","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:36:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BpRUDOA01QH/CHdmaG+kGVmLYpOLPDLKBsrYAs//hXjMX0ti8vyBJii/ijNhdIhjxuULT+IfbJs3GRT2oLRPAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:42:39.128123Z"},"content_sha256":"55306ee4deed0474befd39986b9cb9cba7084ce415b1ab5f2bf016028f2548fb","schema_version":"1.0","event_id":"sha256:55306ee4deed0474befd39986b9cb9cba7084ce415b1ab5f2bf016028f2548fb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2024:746Z2XDLTFN7MXNAE6CGKHNYP2","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Learned infinite elements for helioseismology -- Learning transparent boundary conditions for the solar atmosphere","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["astro-ph.IM","math-ph","math.MP"],"primary_cat":"astro-ph.SR","authors_text":"Damien Fournier, Janosch Preuss, Laurent Gizon, Thorsten Hohage","submitted_at":"2024-02-12T20:49:27Z","abstract_excerpt":"Context. Acoustic waves in the Sun are affected by the atmospheric layers, but this region is often ignored in forward models due to the increase in computational cost. Aims. The purpose of this work is to take into account the solar atmosphere without increasing significantly the computational cost. Methods. We solve a scalar wave equation that describes the propagation of acoustic modes inside the Sun using a finite element method. The boundary conditions used to truncate the computational domain are learned from the Dirichlet-to-Neumann operator, that is the relation between the solution an"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.08059","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2402.08059/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T11:36:19Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"FvNqNSrkKWNrQM3PZb8ioDQj/yU616mKMJT4Ywa40Sa8Q/JaMi97GqcwY7LUTIc3n2ssRA7mIJKH757bvaaQCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T21:42:39.128615Z"},"content_sha256":"3ef01e20b1c8754ab0b5e928f2e99c10a151a83a152846fe05962fa6f4b77445","schema_version":"1.0","event_id":"sha256:3ef01e20b1c8754ab0b5e928f2e99c10a151a83a152846fe05962fa6f4b77445"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/746Z2XDLTFN7MXNAE6CGKHNYP2/bundle.json","state_url":"https://pith.science/pith/746Z2XDLTFN7MXNAE6CGKHNYP2/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/746Z2XDLTFN7MXNAE6CGKHNYP2/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-08-03T21:42:39Z","links":{"resolver":"https://pith.science/pith/746Z2XDLTFN7MXNAE6CGKHNYP2","bundle":"https://pith.science/pith/746Z2XDLTFN7MXNAE6CGKHNYP2/bundle.json","state":"https://pith.science/pith/746Z2XDLTFN7MXNAE6CGKHNYP2/state.json","well_known_bundle":"https://pith.science/.well-known/pith/746Z2XDLTFN7MXNAE6CGKHNYP2/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:746Z2XDLTFN7MXNAE6CGKHNYP2","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":"5008347f041f2ac599b9f7fbd5fb629236ff72be278fe273c41c288fcb9a3594","cross_cats_sorted":["astro-ph.IM","math-ph","math.MP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-02-12T20:49:27Z","title_canon_sha256":"69e420a2390796aed1a1c5b86977966d0395bec294daf188690c93c2883947b2"},"schema_version":"1.0","source":{"id":"2402.08059","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2402.08059","created_at":"2026-07-05T11:36:19Z"},{"alias_kind":"arxiv_version","alias_value":"2402.08059v1","created_at":"2026-07-05T11:36:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2402.08059","created_at":"2026-07-05T11:36:19Z"},{"alias_kind":"pith_short_12","alias_value":"746Z2XDLTFN7","created_at":"2026-07-05T11:36:19Z"},{"alias_kind":"pith_short_16","alias_value":"746Z2XDLTFN7MXNA","created_at":"2026-07-05T11:36:19Z"},{"alias_kind":"pith_short_8","alias_value":"746Z2XDL","created_at":"2026-07-05T11:36:19Z"}],"graph_snapshots":[{"event_id":"sha256:3ef01e20b1c8754ab0b5e928f2e99c10a151a83a152846fe05962fa6f4b77445","target":"graph","created_at":"2026-07-05T11:36:19Z","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/2402.08059/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Context. Acoustic waves in the Sun are affected by the atmospheric layers, but this region is often ignored in forward models due to the increase in computational cost. Aims. The purpose of this work is to take into account the solar atmosphere without increasing significantly the computational cost. Methods. We solve a scalar wave equation that describes the propagation of acoustic modes inside the Sun using a finite element method. The boundary conditions used to truncate the computational domain are learned from the Dirichlet-to-Neumann operator, that is the relation between the solution an","authors_text":"Damien Fournier, Janosch Preuss, Laurent Gizon, Thorsten Hohage","cross_cats":["astro-ph.IM","math-ph","math.MP"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-02-12T20:49:27Z","title":"Learned infinite elements for helioseismology -- Learning transparent boundary conditions for the solar atmosphere"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2402.08059","kind":"arxiv","version":1},"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":"sha256:55306ee4deed0474befd39986b9cb9cba7084ce415b1ab5f2bf016028f2548fb","target":"record","created_at":"2026-07-05T11:36:19Z","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":"5008347f041f2ac599b9f7fbd5fb629236ff72be278fe273c41c288fcb9a3594","cross_cats_sorted":["astro-ph.IM","math-ph","math.MP"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"astro-ph.SR","submitted_at":"2024-02-12T20:49:27Z","title_canon_sha256":"69e420a2390796aed1a1c5b86977966d0395bec294daf188690c93c2883947b2"},"schema_version":"1.0","source":{"id":"2402.08059","kind":"arxiv","version":1}},"canonical_sha256":"ff3d9d5c6b995bf65da02784651db87ead7ea1c1955064621497ddc43d2c73e3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff3d9d5c6b995bf65da02784651db87ead7ea1c1955064621497ddc43d2c73e3","first_computed_at":"2026-07-05T11:36:19.216218Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:36:19.216218Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"X/0Wp9qAAqPg+n5x68DrCF57IgwOr2k8+QyqqhoRsO5wa/i/ATrsWHyI9dsdDv4DyxGkedTD0r/RLBRIOdPmBQ==","signature_status":"signed_v1","signed_at":"2026-07-05T11:36:19.216702Z","signed_message":"canonical_sha256_bytes"},"source_id":"2402.08059","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:55306ee4deed0474befd39986b9cb9cba7084ce415b1ab5f2bf016028f2548fb","sha256:3ef01e20b1c8754ab0b5e928f2e99c10a151a83a152846fe05962fa6f4b77445"],"state_sha256":"253607a034f617451ee29b0884d429289f4fefc1806edbb851d51048e8ee05b3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9hZdcNVKu/g5qJ2j5QdgiWQseL0IGsiWR6QC3feuX/eQRKWJtS6VcCajkVXfVmk7RNJvG52/lzjQluDSnovaCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T21:42:39.133910Z","bundle_sha256":"cc4d44e9e3ed473ddc780611a6cd1cecaf9c17b44f8bc138b5997a23229e9d01"}}