{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:GXJ2RTMKKMNECBAD3LN2EQAGZA","short_pith_number":"pith:GXJ2RTMK","canonical_record":{"source":{"id":"1805.05142","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-14T12:36:49Z","cross_cats_sorted":[],"title_canon_sha256":"a9663c005246e3a436deb03f6e35a64c7c82b7494ec5c92aea2e0287509d9f88","abstract_canon_sha256":"b04772e484cfb04b45b73efda59dc2076db430d566901c6e12a96a717d04eaf7"},"schema_version":"1.0"},"canonical_sha256":"35d3a8cd8a531a410403dadba24006c8350953fc94ba541e02a379855882fedd","source":{"kind":"arxiv","id":"1805.05142","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.05142","created_at":"2026-05-18T00:16:03Z"},{"alias_kind":"arxiv_version","alias_value":"1805.05142v1","created_at":"2026-05-18T00:16:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.05142","created_at":"2026-05-18T00:16:03Z"},{"alias_kind":"pith_short_12","alias_value":"GXJ2RTMKKMNE","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GXJ2RTMKKMNECBAD","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GXJ2RTMK","created_at":"2026-05-18T12:32:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:GXJ2RTMKKMNECBAD3LN2EQAGZA","target":"record","payload":{"canonical_record":{"source":{"id":"1805.05142","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-14T12:36:49Z","cross_cats_sorted":[],"title_canon_sha256":"a9663c005246e3a436deb03f6e35a64c7c82b7494ec5c92aea2e0287509d9f88","abstract_canon_sha256":"b04772e484cfb04b45b73efda59dc2076db430d566901c6e12a96a717d04eaf7"},"schema_version":"1.0"},"canonical_sha256":"35d3a8cd8a531a410403dadba24006c8350953fc94ba541e02a379855882fedd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:16:03.805790Z","signature_b64":"b4iBLztErUBsj2P+OBfIprvxPqc0pO55EV9xFPRjimnVaTDUvFYr/A5IyPcdMx9zOQe+DGpfzarp960pbdViCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"35d3a8cd8a531a410403dadba24006c8350953fc94ba541e02a379855882fedd","last_reissued_at":"2026-05-18T00:16:03.805401Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:16:03.805401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.05142","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":"2026-05-18T00:16:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R8AwwxtfK9KiktIw5lxpWspFx54nIIK7T6At4ziLlGLG95pXwYlq/2Fzf3wm4twsqhtGvr+vvxmmXZlolHC0BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T06:45:52.737531Z"},"content_sha256":"273183f36880efca5b666b0d3224423f9240e8c2aab53824e0cf9e62fb214853","schema_version":"1.0","event_id":"sha256:273183f36880efca5b666b0d3224423f9240e8c2aab53824e0cf9e62fb214853"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:GXJ2RTMKKMNECBAD3LN2EQAGZA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Stable non-symmetric coupling of the finite volume and the boundary element method for convection-dominated parabolic-elliptic interface problems","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.NA","authors_text":"Christoph Erath, Robert Schorr","submitted_at":"2018-05-14T12:36:49Z","abstract_excerpt":"Many problems in electrical engineering or fluid mechanics can be modeled by parabolic-elliptic interface problems, where the domain for the exterior elliptic problem might be unbounded. A possibility to solve this class of problems numerically is the non-symmetric coupling of finite elements (FEM) and boundary elements (BEM) analyzed in [Egger, Erath, Schorr, arXiv:1711.08487, 2017]. If, for example, the interior problem represents a fluid, this method is not appropriate since FEM in general lacks conservation of numerical fluxes and in case of convection dominance also stability.\n  A possibl"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.05142","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":""},"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":"2026-05-18T00:16:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oioBq57JDRHp5xWHjnaM3FHVrgQRxPq5jC8xvX03gf2Ggc5peqYX175hnGVv2+a8ySEfzQlF0DcyvXmecGoXBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T06:45:52.737874Z"},"content_sha256":"5d03553bf2bdbe4804d7679f57d0a5ad32e5023eb0e35f3bb88e65720314c89a","schema_version":"1.0","event_id":"sha256:5d03553bf2bdbe4804d7679f57d0a5ad32e5023eb0e35f3bb88e65720314c89a"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GXJ2RTMKKMNECBAD3LN2EQAGZA/bundle.json","state_url":"https://pith.science/pith/GXJ2RTMKKMNECBAD3LN2EQAGZA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GXJ2RTMKKMNECBAD3LN2EQAGZA/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":"2026-06-20T06:45:52Z","links":{"resolver":"https://pith.science/pith/GXJ2RTMKKMNECBAD3LN2EQAGZA","bundle":"https://pith.science/pith/GXJ2RTMKKMNECBAD3LN2EQAGZA/bundle.json","state":"https://pith.science/pith/GXJ2RTMKKMNECBAD3LN2EQAGZA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GXJ2RTMKKMNECBAD3LN2EQAGZA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:GXJ2RTMKKMNECBAD3LN2EQAGZA","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":"b04772e484cfb04b45b73efda59dc2076db430d566901c6e12a96a717d04eaf7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-14T12:36:49Z","title_canon_sha256":"a9663c005246e3a436deb03f6e35a64c7c82b7494ec5c92aea2e0287509d9f88"},"schema_version":"1.0","source":{"id":"1805.05142","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.05142","created_at":"2026-05-18T00:16:03Z"},{"alias_kind":"arxiv_version","alias_value":"1805.05142v1","created_at":"2026-05-18T00:16:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.05142","created_at":"2026-05-18T00:16:03Z"},{"alias_kind":"pith_short_12","alias_value":"GXJ2RTMKKMNE","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_16","alias_value":"GXJ2RTMKKMNECBAD","created_at":"2026-05-18T12:32:25Z"},{"alias_kind":"pith_short_8","alias_value":"GXJ2RTMK","created_at":"2026-05-18T12:32:25Z"}],"graph_snapshots":[{"event_id":"sha256:5d03553bf2bdbe4804d7679f57d0a5ad32e5023eb0e35f3bb88e65720314c89a","target":"graph","created_at":"2026-05-18T00:16:03Z","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":"Many problems in electrical engineering or fluid mechanics can be modeled by parabolic-elliptic interface problems, where the domain for the exterior elliptic problem might be unbounded. A possibility to solve this class of problems numerically is the non-symmetric coupling of finite elements (FEM) and boundary elements (BEM) analyzed in [Egger, Erath, Schorr, arXiv:1711.08487, 2017]. If, for example, the interior problem represents a fluid, this method is not appropriate since FEM in general lacks conservation of numerical fluxes and in case of convection dominance also stability.\n  A possibl","authors_text":"Christoph Erath, Robert Schorr","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-14T12:36:49Z","title":"Stable non-symmetric coupling of the finite volume and the boundary element method for convection-dominated parabolic-elliptic interface problems"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.05142","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":"sha256:273183f36880efca5b666b0d3224423f9240e8c2aab53824e0cf9e62fb214853","target":"record","created_at":"2026-05-18T00:16:03Z","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":"b04772e484cfb04b45b73efda59dc2076db430d566901c6e12a96a717d04eaf7","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2018-05-14T12:36:49Z","title_canon_sha256":"a9663c005246e3a436deb03f6e35a64c7c82b7494ec5c92aea2e0287509d9f88"},"schema_version":"1.0","source":{"id":"1805.05142","kind":"arxiv","version":1}},"canonical_sha256":"35d3a8cd8a531a410403dadba24006c8350953fc94ba541e02a379855882fedd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"35d3a8cd8a531a410403dadba24006c8350953fc94ba541e02a379855882fedd","first_computed_at":"2026-05-18T00:16:03.805401Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:16:03.805401Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"b4iBLztErUBsj2P+OBfIprvxPqc0pO55EV9xFPRjimnVaTDUvFYr/A5IyPcdMx9zOQe+DGpfzarp960pbdViCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:16:03.805790Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.05142","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:273183f36880efca5b666b0d3224423f9240e8c2aab53824e0cf9e62fb214853","sha256:5d03553bf2bdbe4804d7679f57d0a5ad32e5023eb0e35f3bb88e65720314c89a"],"state_sha256":"7440a6f964af768086101c6abeff8184da439c101aeb7d9a1bdc57d8e664a3bb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Nckes+42GDMnsr1yp4FNuEst/wweUZtKwKkcaVmZ/HZuvWwE+6uw9kY0tlmmaor7dMD23pVm89RK5HVJdML2BQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T06:45:52.739837Z","bundle_sha256":"ca7905a7c13d87b6d1e471ff3f595220cf28e0899122b65051453639d642440b"}}