{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:Z7TS225PASIABGSAH2NZ2RLESD","short_pith_number":"pith:Z7TS225P","canonical_record":{"source":{"id":"1903.01834","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2019-03-05T14:14:39Z","cross_cats_sorted":["cs.NA"],"title_canon_sha256":"80431d92062cfe49d1a4e6a5e202db6604ff936428b29e1f9ed0ae743c8718c2","abstract_canon_sha256":"3540f80bceb3c30f3a1e24fc723bcae32dbc79304abd2d696726c1778691b372"},"schema_version":"1.0"},"canonical_sha256":"cfe72d6baf0490009a403e9b9d456490c493122ea330e86d6ebcfb21636564eb","source":{"kind":"arxiv","id":"1903.01834","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.01834","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"arxiv_version","alias_value":"1903.01834v2","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.01834","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"pith_short_12","alias_value":"Z7TS225PASIA","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"Z7TS225PASIABGSA","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"Z7TS225P","created_at":"2026-05-18T12:33:33Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:Z7TS225PASIABGSAH2NZ2RLESD","target":"record","payload":{"canonical_record":{"source":{"id":"1903.01834","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2019-03-05T14:14:39Z","cross_cats_sorted":["cs.NA"],"title_canon_sha256":"80431d92062cfe49d1a4e6a5e202db6604ff936428b29e1f9ed0ae743c8718c2","abstract_canon_sha256":"3540f80bceb3c30f3a1e24fc723bcae32dbc79304abd2d696726c1778691b372"},"schema_version":"1.0"},"canonical_sha256":"cfe72d6baf0490009a403e9b9d456490c493122ea330e86d6ebcfb21636564eb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:55.303613Z","signature_b64":"1KezoMczqbPtjQivQggL/c1tl2BcMN7HGoUSnB992e2MO1c6PcWDLE+CKRX1d0c1qa6C1YCH/B8mxNgcSFzBAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cfe72d6baf0490009a403e9b9d456490c493122ea330e86d6ebcfb21636564eb","last_reissued_at":"2026-05-17T23:50:55.302845Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:55.302845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1903.01834","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-17T23:50:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"luUFnWRS8AzNuyW2VMcOZNjWo9ZYz2P6bokeBwECioprUNLouYU05mK073HLiToXtT6Iqp0qu90fjJbXKt+FBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T10:36:25.552688Z"},"content_sha256":"1bcbdfe35ebdd0d46252c6aaf02fe98b7192f970042e84fee347baa178645796","schema_version":"1.0","event_id":"sha256:1bcbdfe35ebdd0d46252c6aaf02fe98b7192f970042e84fee347baa178645796"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:Z7TS225PASIABGSAH2NZ2RLESD","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"An interior penalty discontinuous Galerkin method for the time-domain acoustic-elastic wave interaction problem","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NA"],"primary_cat":"math.NA","authors_text":"Jing Huang, Liwei Xu, Xiaozhou Li, Yingda Cheng","submitted_at":"2019-03-05T14:14:39Z","abstract_excerpt":"In this paper, we consider numerical solutions of a time domain acoustic-elastic wave interaction problem which occurs between a bounded penetrable elastic body and a compressible inviscid fluid. It is also called the fluid-solid interaction problem. Firstly, an artificial boundary is introduced to transform the original transmission problem into a problem in a bounded region, and then its well-posed results are presented. We then employ a symmetric interior penalty discontinuous Galerkin method for the solution of the reduced interaction problem consisting of second-order wave equations. A pr"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.01834","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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":"2026-05-17T23:50:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VXpEWNZotbhyRH4Zct0CTLzCRUbSnEqtjUtwLQ5vwdAm6/B6qm0FnefjKcYWsYQLzG8uZ+pVNiUDbF/XwNarBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-07T10:36:25.553037Z"},"content_sha256":"ab16adf1d4060b83b928a0c4680baf43a35152639d7e6dbdfaa60cbba2cc1f85","schema_version":"1.0","event_id":"sha256:ab16adf1d4060b83b928a0c4680baf43a35152639d7e6dbdfaa60cbba2cc1f85"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Z7TS225PASIABGSAH2NZ2RLESD/bundle.json","state_url":"https://pith.science/pith/Z7TS225PASIABGSAH2NZ2RLESD/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Z7TS225PASIABGSAH2NZ2RLESD/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":"2026-06-07T10:36:25Z","links":{"resolver":"https://pith.science/pith/Z7TS225PASIABGSAH2NZ2RLESD","bundle":"https://pith.science/pith/Z7TS225PASIABGSAH2NZ2RLESD/bundle.json","state":"https://pith.science/pith/Z7TS225PASIABGSAH2NZ2RLESD/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Z7TS225PASIABGSAH2NZ2RLESD/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:Z7TS225PASIABGSAH2NZ2RLESD","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":"3540f80bceb3c30f3a1e24fc723bcae32dbc79304abd2d696726c1778691b372","cross_cats_sorted":["cs.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2019-03-05T14:14:39Z","title_canon_sha256":"80431d92062cfe49d1a4e6a5e202db6604ff936428b29e1f9ed0ae743c8718c2"},"schema_version":"1.0","source":{"id":"1903.01834","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1903.01834","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"arxiv_version","alias_value":"1903.01834v2","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1903.01834","created_at":"2026-05-17T23:50:55Z"},{"alias_kind":"pith_short_12","alias_value":"Z7TS225PASIA","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_16","alias_value":"Z7TS225PASIABGSA","created_at":"2026-05-18T12:33:33Z"},{"alias_kind":"pith_short_8","alias_value":"Z7TS225P","created_at":"2026-05-18T12:33:33Z"}],"graph_snapshots":[{"event_id":"sha256:ab16adf1d4060b83b928a0c4680baf43a35152639d7e6dbdfaa60cbba2cc1f85","target":"graph","created_at":"2026-05-17T23:50:55Z","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"},"paper":{"abstract_excerpt":"In this paper, we consider numerical solutions of a time domain acoustic-elastic wave interaction problem which occurs between a bounded penetrable elastic body and a compressible inviscid fluid. It is also called the fluid-solid interaction problem. Firstly, an artificial boundary is introduced to transform the original transmission problem into a problem in a bounded region, and then its well-posed results are presented. We then employ a symmetric interior penalty discontinuous Galerkin method for the solution of the reduced interaction problem consisting of second-order wave equations. A pr","authors_text":"Jing Huang, Liwei Xu, Xiaozhou Li, Yingda Cheng","cross_cats":["cs.NA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2019-03-05T14:14:39Z","title":"An interior penalty discontinuous Galerkin method for the time-domain acoustic-elastic wave interaction problem"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.01834","kind":"arxiv","version":2},"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":"sha256:1bcbdfe35ebdd0d46252c6aaf02fe98b7192f970042e84fee347baa178645796","target":"record","created_at":"2026-05-17T23:50:55Z","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":"3540f80bceb3c30f3a1e24fc723bcae32dbc79304abd2d696726c1778691b372","cross_cats_sorted":["cs.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2019-03-05T14:14:39Z","title_canon_sha256":"80431d92062cfe49d1a4e6a5e202db6604ff936428b29e1f9ed0ae743c8718c2"},"schema_version":"1.0","source":{"id":"1903.01834","kind":"arxiv","version":2}},"canonical_sha256":"cfe72d6baf0490009a403e9b9d456490c493122ea330e86d6ebcfb21636564eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cfe72d6baf0490009a403e9b9d456490c493122ea330e86d6ebcfb21636564eb","first_computed_at":"2026-05-17T23:50:55.302845Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:55.302845Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1KezoMczqbPtjQivQggL/c1tl2BcMN7HGoUSnB992e2MO1c6PcWDLE+CKRX1d0c1qa6C1YCH/B8mxNgcSFzBAQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:55.303613Z","signed_message":"canonical_sha256_bytes"},"source_id":"1903.01834","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1bcbdfe35ebdd0d46252c6aaf02fe98b7192f970042e84fee347baa178645796","sha256:ab16adf1d4060b83b928a0c4680baf43a35152639d7e6dbdfaa60cbba2cc1f85"],"state_sha256":"9c01742b27bbae4763137275181312cdeb652243ab8c812b218a91449c5084fb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pz96+3gYbsUaupV9pSsgQP0YIX8YJVk1cN/i39X6KR6RsvVDCIuEeco2ptQpT0Of+zglcw3KEXReT/QwkuGlBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-07T10:36:25.555412Z","bundle_sha256":"50f9f3c874a21e1fba239b32ecd40a0a49eb9227b3191ca390f79a08d986ee2c"}}