{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:ZVS6IGXLOV2UTFZYR4BPHIXL2T","short_pith_number":"pith:ZVS6IGXL","canonical_record":{"source":{"id":"1502.07142","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2015-02-25T12:01:38Z","cross_cats_sorted":[],"title_canon_sha256":"fc651d0a49e9112ed34c07e5d34a9d44dbd654f4807eb07f8c2b740a798a175c","abstract_canon_sha256":"239632074ccce8e138c45013e5c517ac8b513f64736a23e238dc0e71df078d47"},"schema_version":"1.0"},"canonical_sha256":"cd65e41aeb75754997388f02f3a2ebd4e99f76146cd7b97efa06405be5a6f689","source":{"kind":"arxiv","id":"1502.07142","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.07142","created_at":"2026-05-18T01:14:09Z"},{"alias_kind":"arxiv_version","alias_value":"1502.07142v2","created_at":"2026-05-18T01:14:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.07142","created_at":"2026-05-18T01:14:09Z"},{"alias_kind":"pith_short_12","alias_value":"ZVS6IGXLOV2U","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZVS6IGXLOV2UTFZY","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZVS6IGXL","created_at":"2026-05-18T12:29:52Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:ZVS6IGXLOV2UTFZYR4BPHIXL2T","target":"record","payload":{"canonical_record":{"source":{"id":"1502.07142","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2015-02-25T12:01:38Z","cross_cats_sorted":[],"title_canon_sha256":"fc651d0a49e9112ed34c07e5d34a9d44dbd654f4807eb07f8c2b740a798a175c","abstract_canon_sha256":"239632074ccce8e138c45013e5c517ac8b513f64736a23e238dc0e71df078d47"},"schema_version":"1.0"},"canonical_sha256":"cd65e41aeb75754997388f02f3a2ebd4e99f76146cd7b97efa06405be5a6f689","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:14:09.292679Z","signature_b64":"1AOube1iMLo61dfsAE9romRP5w3jDJdkGYq4QObWb+eR1WJ1K59v6jLVbBtQomMJw5OyvSA3rSQGlEjRU+9wCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"cd65e41aeb75754997388f02f3a2ebd4e99f76146cd7b97efa06405be5a6f689","last_reissued_at":"2026-05-18T01:14:09.292130Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:14:09.292130Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1502.07142","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":"2026-05-18T01:14:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oEMaIHPrIPU4Mq180SZkTsxG5ucJBxu9GY/gMo465MZs+LowSb3cM+1CMwbtzZzFApsX8F6Zq6P3L5byAxdZAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T21:32:35.509171Z"},"content_sha256":"05d43c80199162404f5028278665bff44b2aa839d7af499c80d297fa68479af5","schema_version":"1.0","event_id":"sha256:05d43c80199162404f5028278665bff44b2aa839d7af499c80d297fa68479af5"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:ZVS6IGXLOV2UTFZYR4BPHIXL2T","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A cut finite element method for coupled bulk-surface problems on time-dependent domains","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.NA","authors_text":"Mats G. Larson, Peter Hansbo, Sara Zahedi","submitted_at":"2015-02-25T12:01:38Z","abstract_excerpt":"In this contribution we present a new computational method for coupled bulk-surface problems on time-dependent domains. The method is based on a space-time formulation using discontinuous piecewise linear elements in time and continuous piecewise linear elements in space on a fixed background mesh. The domain is represented using a piecewise linear level set function on the background mesh and a cut finite element method is used to discretize the bulk and surface problems. In the cut finite element method the bilinear forms associated with the weak formulation of the problem are directly evalu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.07142","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":"2026-05-18T01:14:09Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pLCmNRyXmS+0mJGEEsIOx39C7PYAEcLfAXEdSQb1THaIswDY5iVtr9uTYvZvbl4xahFXCQwb8v6bSLYofIrADA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-20T21:32:35.509536Z"},"content_sha256":"164de46319496d421fdb570f7d703adabec6f4307f5272e45d0dfc92f90cb156","schema_version":"1.0","event_id":"sha256:164de46319496d421fdb570f7d703adabec6f4307f5272e45d0dfc92f90cb156"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZVS6IGXLOV2UTFZYR4BPHIXL2T/bundle.json","state_url":"https://pith.science/pith/ZVS6IGXLOV2UTFZYR4BPHIXL2T/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZVS6IGXLOV2UTFZYR4BPHIXL2T/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":"2026-06-20T21:32:35Z","links":{"resolver":"https://pith.science/pith/ZVS6IGXLOV2UTFZYR4BPHIXL2T","bundle":"https://pith.science/pith/ZVS6IGXLOV2UTFZYR4BPHIXL2T/bundle.json","state":"https://pith.science/pith/ZVS6IGXLOV2UTFZYR4BPHIXL2T/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZVS6IGXLOV2UTFZYR4BPHIXL2T/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ZVS6IGXLOV2UTFZYR4BPHIXL2T","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":"239632074ccce8e138c45013e5c517ac8b513f64736a23e238dc0e71df078d47","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2015-02-25T12:01:38Z","title_canon_sha256":"fc651d0a49e9112ed34c07e5d34a9d44dbd654f4807eb07f8c2b740a798a175c"},"schema_version":"1.0","source":{"id":"1502.07142","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1502.07142","created_at":"2026-05-18T01:14:09Z"},{"alias_kind":"arxiv_version","alias_value":"1502.07142v2","created_at":"2026-05-18T01:14:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1502.07142","created_at":"2026-05-18T01:14:09Z"},{"alias_kind":"pith_short_12","alias_value":"ZVS6IGXLOV2U","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZVS6IGXLOV2UTFZY","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZVS6IGXL","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:164de46319496d421fdb570f7d703adabec6f4307f5272e45d0dfc92f90cb156","target":"graph","created_at":"2026-05-18T01:14:09Z","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 contribution we present a new computational method for coupled bulk-surface problems on time-dependent domains. The method is based on a space-time formulation using discontinuous piecewise linear elements in time and continuous piecewise linear elements in space on a fixed background mesh. The domain is represented using a piecewise linear level set function on the background mesh and a cut finite element method is used to discretize the bulk and surface problems. In the cut finite element method the bilinear forms associated with the weak formulation of the problem are directly evalu","authors_text":"Mats G. Larson, Peter Hansbo, Sara Zahedi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2015-02-25T12:01:38Z","title":"A cut finite element method for coupled bulk-surface problems on time-dependent domains"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.07142","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":"sha256:05d43c80199162404f5028278665bff44b2aa839d7af499c80d297fa68479af5","target":"record","created_at":"2026-05-18T01:14:09Z","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":"239632074ccce8e138c45013e5c517ac8b513f64736a23e238dc0e71df078d47","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2015-02-25T12:01:38Z","title_canon_sha256":"fc651d0a49e9112ed34c07e5d34a9d44dbd654f4807eb07f8c2b740a798a175c"},"schema_version":"1.0","source":{"id":"1502.07142","kind":"arxiv","version":2}},"canonical_sha256":"cd65e41aeb75754997388f02f3a2ebd4e99f76146cd7b97efa06405be5a6f689","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cd65e41aeb75754997388f02f3a2ebd4e99f76146cd7b97efa06405be5a6f689","first_computed_at":"2026-05-18T01:14:09.292130Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:14:09.292130Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"1AOube1iMLo61dfsAE9romRP5w3jDJdkGYq4QObWb+eR1WJ1K59v6jLVbBtQomMJw5OyvSA3rSQGlEjRU+9wCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:14:09.292679Z","signed_message":"canonical_sha256_bytes"},"source_id":"1502.07142","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:05d43c80199162404f5028278665bff44b2aa839d7af499c80d297fa68479af5","sha256:164de46319496d421fdb570f7d703adabec6f4307f5272e45d0dfc92f90cb156"],"state_sha256":"77c4e90479f5ce622786f515973a41ab97d75c6548d8d2800a8c453ba8827e98"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uZdO1Z61f/ZpOv0LaAI2wSOW67lGPzC6WFYu+yDgg7KAYh4LLQR96ONv7LyGdT2eLluzbOaDje6PNTWoAKG7Aw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-20T21:32:35.511467Z","bundle_sha256":"76b950c2b04210e6e7e623a887bc22ad6392f1a809f0d085c422f42d7406cede"}}