{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:CKF377TLP3S4PCQXOG3JYGMWT7","short_pith_number":"pith:CKF377TL","canonical_record":{"source":{"id":"1712.08479","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-12-22T14:55:23Z","cross_cats_sorted":[],"title_canon_sha256":"d2dbbe6735e8f1062b1f9f08fd89d5aa8bd2391df1de85f29a76a0bb41469b8d","abstract_canon_sha256":"b168962af6e846545404e2a1f8fa51c3b40f99a5d645f42f7b1f3d088beeff5d"},"schema_version":"1.0"},"canonical_sha256":"128bbffe6b7ee5c78a1771b69c19969fef932829590e07225d27e5a3b19dc539","source":{"kind":"arxiv","id":"1712.08479","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.08479","created_at":"2026-05-18T00:27:23Z"},{"alias_kind":"arxiv_version","alias_value":"1712.08479v1","created_at":"2026-05-18T00:27:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.08479","created_at":"2026-05-18T00:27:23Z"},{"alias_kind":"pith_short_12","alias_value":"CKF377TLP3S4","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CKF377TLP3S4PCQX","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CKF377TL","created_at":"2026-05-18T12:31:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:CKF377TLP3S4PCQXOG3JYGMWT7","target":"record","payload":{"canonical_record":{"source":{"id":"1712.08479","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-12-22T14:55:23Z","cross_cats_sorted":[],"title_canon_sha256":"d2dbbe6735e8f1062b1f9f08fd89d5aa8bd2391df1de85f29a76a0bb41469b8d","abstract_canon_sha256":"b168962af6e846545404e2a1f8fa51c3b40f99a5d645f42f7b1f3d088beeff5d"},"schema_version":"1.0"},"canonical_sha256":"128bbffe6b7ee5c78a1771b69c19969fef932829590e07225d27e5a3b19dc539","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:27:23.341325Z","signature_b64":"BoykrBB45UuiEZ/kIywMm1JlJpTZOWs/lEN0isIYsYjVfBlMa6fOqhFjgfif4SeB45Vd3z3n6dM4Ps4PrlpqAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"128bbffe6b7ee5c78a1771b69c19969fef932829590e07225d27e5a3b19dc539","last_reissued_at":"2026-05-18T00:27:23.340727Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:27:23.340727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1712.08479","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":"2026-05-18T00:27:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"tR59T2b+UYSxG5iRISAmH/VpK28lBFfBcZdWr3wwddjon9z2bD5J4izX+Era7ue5azRupdozQb25qhGjpnUxDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T13:03:02.518838Z"},"content_sha256":"c654ba4be4fbaea7127d8239e49c7ff544769e4a626c44e324230a499455ad14","schema_version":"1.0","event_id":"sha256:c654ba4be4fbaea7127d8239e49c7ff544769e4a626c44e324230a499455ad14"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:CKF377TLP3S4PCQXOG3JYGMWT7","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hybrid-Dimensional Finite Volume Discretizations for Fractured Porous Media","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.NA","authors_text":"Eirik Keilegavlen, Inga Berre, Ivar Stefansson","submitted_at":"2017-12-22T14:55:23Z","abstract_excerpt":"Over the last decade, finite volume discretizations for flow in porous media have been extended to handle situations where fractures dominate the flow. These discretizations have successfully been combined with the discrete fracture-matrix models to yield mass conservative methods capable of explicitly incorporating the impact of fractures and their geometry. When combined with a hybrid-dimensional formulation, two central concerns are the restrictions arising from small cell sizes at fracture intersections and the coupling between fractures and matrix. Focusing on these aspects, we demonstrat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.08479","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":"2026-05-18T00:27:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OIo2DuKKTkQI3UnCFO2SremMeHcd4BSwjSdKM0S9s4cOhfE5zCb2ZhacGjdiyx2fbD4DOL/XUFxlRljnIPpqDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-22T13:03:02.519187Z"},"content_sha256":"afe85e1c18313dc963042883c297b231319fd0ac72bd5313539b8053656f76a9","schema_version":"1.0","event_id":"sha256:afe85e1c18313dc963042883c297b231319fd0ac72bd5313539b8053656f76a9"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CKF377TLP3S4PCQXOG3JYGMWT7/bundle.json","state_url":"https://pith.science/pith/CKF377TLP3S4PCQXOG3JYGMWT7/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CKF377TLP3S4PCQXOG3JYGMWT7/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":"2026-06-22T13:03:02Z","links":{"resolver":"https://pith.science/pith/CKF377TLP3S4PCQXOG3JYGMWT7","bundle":"https://pith.science/pith/CKF377TLP3S4PCQXOG3JYGMWT7/bundle.json","state":"https://pith.science/pith/CKF377TLP3S4PCQXOG3JYGMWT7/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CKF377TLP3S4PCQXOG3JYGMWT7/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:CKF377TLP3S4PCQXOG3JYGMWT7","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":"b168962af6e846545404e2a1f8fa51c3b40f99a5d645f42f7b1f3d088beeff5d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-12-22T14:55:23Z","title_canon_sha256":"d2dbbe6735e8f1062b1f9f08fd89d5aa8bd2391df1de85f29a76a0bb41469b8d"},"schema_version":"1.0","source":{"id":"1712.08479","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.08479","created_at":"2026-05-18T00:27:23Z"},{"alias_kind":"arxiv_version","alias_value":"1712.08479v1","created_at":"2026-05-18T00:27:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.08479","created_at":"2026-05-18T00:27:23Z"},{"alias_kind":"pith_short_12","alias_value":"CKF377TLP3S4","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CKF377TLP3S4PCQX","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CKF377TL","created_at":"2026-05-18T12:31:10Z"}],"graph_snapshots":[{"event_id":"sha256:afe85e1c18313dc963042883c297b231319fd0ac72bd5313539b8053656f76a9","target":"graph","created_at":"2026-05-18T00:27:23Z","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":"Over the last decade, finite volume discretizations for flow in porous media have been extended to handle situations where fractures dominate the flow. These discretizations have successfully been combined with the discrete fracture-matrix models to yield mass conservative methods capable of explicitly incorporating the impact of fractures and their geometry. When combined with a hybrid-dimensional formulation, two central concerns are the restrictions arising from small cell sizes at fracture intersections and the coupling between fractures and matrix. Focusing on these aspects, we demonstrat","authors_text":"Eirik Keilegavlen, Inga Berre, Ivar Stefansson","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-12-22T14:55:23Z","title":"Hybrid-Dimensional Finite Volume Discretizations for Fractured Porous Media"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.08479","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:c654ba4be4fbaea7127d8239e49c7ff544769e4a626c44e324230a499455ad14","target":"record","created_at":"2026-05-18T00:27:23Z","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":"b168962af6e846545404e2a1f8fa51c3b40f99a5d645f42f7b1f3d088beeff5d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-12-22T14:55:23Z","title_canon_sha256":"d2dbbe6735e8f1062b1f9f08fd89d5aa8bd2391df1de85f29a76a0bb41469b8d"},"schema_version":"1.0","source":{"id":"1712.08479","kind":"arxiv","version":1}},"canonical_sha256":"128bbffe6b7ee5c78a1771b69c19969fef932829590e07225d27e5a3b19dc539","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"128bbffe6b7ee5c78a1771b69c19969fef932829590e07225d27e5a3b19dc539","first_computed_at":"2026-05-18T00:27:23.340727Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:27:23.340727Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"BoykrBB45UuiEZ/kIywMm1JlJpTZOWs/lEN0isIYsYjVfBlMa6fOqhFjgfif4SeB45Vd3z3n6dM4Ps4PrlpqAA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:27:23.341325Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.08479","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c654ba4be4fbaea7127d8239e49c7ff544769e4a626c44e324230a499455ad14","sha256:afe85e1c18313dc963042883c297b231319fd0ac72bd5313539b8053656f76a9"],"state_sha256":"981bb0796b5082f857e4ebcb5ccc5293ab144b6e85f4b2dfa76897bc64ecd654"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"habHBtOrcXhRtJzH/5dx76BXVSlCABdX2kSN8fN+TyypfybkV+DNYIz/cntyW8GU5KfqrIcrrIRRNloIVB1oAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-22T13:03:02.521188Z","bundle_sha256":"ebfa44ec466a534241d5b6d69f75b5eacfee9c088c26492f0b9f9d48d8b8e7aa"}}