{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:4E5VNWXBNAXU42C6MJOADV6GTM","short_pith_number":"pith:4E5VNWXB","canonical_record":{"source":{"id":"1312.2266","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2013-12-08T21:31:14Z","cross_cats_sorted":["cs.MS","cs.NA"],"title_canon_sha256":"67f27739da2ca15a0fd02af06fb755f9ee159514f7932b57e5609d8d3fd67a15","abstract_canon_sha256":"805eacf1ce34cef1dd5defe3d5378ca27f3e6731bcbd8295071b62244e8df13a"},"schema_version":"1.0"},"canonical_sha256":"e13b56dae1682f4e685e625c01d7c69b0616f17253dcbc1efa449849908533b8","source":{"kind":"arxiv","id":"1312.2266","version":4},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.2266","created_at":"2026-05-18T03:03:31Z"},{"alias_kind":"arxiv_version","alias_value":"1312.2266v4","created_at":"2026-05-18T03:03:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.2266","created_at":"2026-05-18T03:03:31Z"},{"alias_kind":"pith_short_12","alias_value":"4E5VNWXBNAXU","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"4E5VNWXBNAXU42C6","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"4E5VNWXB","created_at":"2026-05-18T12:27:32Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:4E5VNWXBNAXU42C6MJOADV6GTM","target":"record","payload":{"canonical_record":{"source":{"id":"1312.2266","kind":"arxiv","version":4},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2013-12-08T21:31:14Z","cross_cats_sorted":["cs.MS","cs.NA"],"title_canon_sha256":"67f27739da2ca15a0fd02af06fb755f9ee159514f7932b57e5609d8d3fd67a15","abstract_canon_sha256":"805eacf1ce34cef1dd5defe3d5378ca27f3e6731bcbd8295071b62244e8df13a"},"schema_version":"1.0"},"canonical_sha256":"e13b56dae1682f4e685e625c01d7c69b0616f17253dcbc1efa449849908533b8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:03:31.576551Z","signature_b64":"+VZmMXIt+M88TRSahGuJhmeGvt1Hx9N00bdEuto26o4pPhahswU1LlMjlonDmpQRRdjLLddZ5LU5CHqSatTfAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e13b56dae1682f4e685e625c01d7c69b0616f17253dcbc1efa449849908533b8","last_reissued_at":"2026-05-18T03:03:31.576112Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:03:31.576112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1312.2266","source_version":4,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:03:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OvX6z01WNGcf9FdaBGVyc5+m5EP4/K6oNx1+iQeozR4IDYZpbBWlULOS2t+BPVlZUJ5bAjJpqXdSnbeqSSBkAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T08:13:31.807018Z"},"content_sha256":"d02c7782378cbd2567df25ba5af71a49a3ae0886c70226c5422fca5b7d049d36","schema_version":"1.0","event_id":"sha256:d02c7782378cbd2567df25ba5af71a49a3ae0886c70226c5422fca5b7d049d36"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:4E5VNWXBNAXU42C6MJOADV6GTM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The deal.II Library, Version 8.1","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.MS","cs.NA"],"primary_cat":"math.NA","authors_text":"Bruno Turcksin, Guido Kanschat, Luca Heltai, Martin Kronbichler, Matthias Maier, Timo Heister, Toby D. Young, Wolfgang Bangerth","submitted_at":"2013-12-08T21:31:14Z","abstract_excerpt":"This paper provides an overview of the new features of the finite element library deal.II version 8.1."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.2266","kind":"arxiv","version":4},"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":"2026-05-18T03:03:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"hLoD2E/eGt0iEYVUwHH9Paqmkl5QLALyyftUfMoMDnp8F5bMKjKYVzqijvDsdd4nbtUzginm+C460+i0tdmJDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T08:13:31.807368Z"},"content_sha256":"b4e70e79d2f388e5a76b3022cb35a665b59ae11aa2526fe829b89ce31f5cb579","schema_version":"1.0","event_id":"sha256:b4e70e79d2f388e5a76b3022cb35a665b59ae11aa2526fe829b89ce31f5cb579"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/4E5VNWXBNAXU42C6MJOADV6GTM/bundle.json","state_url":"https://pith.science/pith/4E5VNWXBNAXU42C6MJOADV6GTM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/4E5VNWXBNAXU42C6MJOADV6GTM/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":"2026-05-30T08:13:31Z","links":{"resolver":"https://pith.science/pith/4E5VNWXBNAXU42C6MJOADV6GTM","bundle":"https://pith.science/pith/4E5VNWXBNAXU42C6MJOADV6GTM/bundle.json","state":"https://pith.science/pith/4E5VNWXBNAXU42C6MJOADV6GTM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/4E5VNWXBNAXU42C6MJOADV6GTM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:4E5VNWXBNAXU42C6MJOADV6GTM","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":"805eacf1ce34cef1dd5defe3d5378ca27f3e6731bcbd8295071b62244e8df13a","cross_cats_sorted":["cs.MS","cs.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2013-12-08T21:31:14Z","title_canon_sha256":"67f27739da2ca15a0fd02af06fb755f9ee159514f7932b57e5609d8d3fd67a15"},"schema_version":"1.0","source":{"id":"1312.2266","kind":"arxiv","version":4}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1312.2266","created_at":"2026-05-18T03:03:31Z"},{"alias_kind":"arxiv_version","alias_value":"1312.2266v4","created_at":"2026-05-18T03:03:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.2266","created_at":"2026-05-18T03:03:31Z"},{"alias_kind":"pith_short_12","alias_value":"4E5VNWXBNAXU","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_16","alias_value":"4E5VNWXBNAXU42C6","created_at":"2026-05-18T12:27:32Z"},{"alias_kind":"pith_short_8","alias_value":"4E5VNWXB","created_at":"2026-05-18T12:27:32Z"}],"graph_snapshots":[{"event_id":"sha256:b4e70e79d2f388e5a76b3022cb35a665b59ae11aa2526fe829b89ce31f5cb579","target":"graph","created_at":"2026-05-18T03:03:31Z","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":"This paper provides an overview of the new features of the finite element library deal.II version 8.1.","authors_text":"Bruno Turcksin, Guido Kanschat, Luca Heltai, Martin Kronbichler, Matthias Maier, Timo Heister, Toby D. Young, Wolfgang Bangerth","cross_cats":["cs.MS","cs.NA"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2013-12-08T21:31:14Z","title":"The deal.II Library, Version 8.1"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.2266","kind":"arxiv","version":4},"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:d02c7782378cbd2567df25ba5af71a49a3ae0886c70226c5422fca5b7d049d36","target":"record","created_at":"2026-05-18T03:03:31Z","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":"805eacf1ce34cef1dd5defe3d5378ca27f3e6731bcbd8295071b62244e8df13a","cross_cats_sorted":["cs.MS","cs.NA"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2013-12-08T21:31:14Z","title_canon_sha256":"67f27739da2ca15a0fd02af06fb755f9ee159514f7932b57e5609d8d3fd67a15"},"schema_version":"1.0","source":{"id":"1312.2266","kind":"arxiv","version":4}},"canonical_sha256":"e13b56dae1682f4e685e625c01d7c69b0616f17253dcbc1efa449849908533b8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e13b56dae1682f4e685e625c01d7c69b0616f17253dcbc1efa449849908533b8","first_computed_at":"2026-05-18T03:03:31.576112Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:03:31.576112Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+VZmMXIt+M88TRSahGuJhmeGvt1Hx9N00bdEuto26o4pPhahswU1LlMjlonDmpQRRdjLLddZ5LU5CHqSatTfAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:03:31.576551Z","signed_message":"canonical_sha256_bytes"},"source_id":"1312.2266","source_kind":"arxiv","source_version":4}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d02c7782378cbd2567df25ba5af71a49a3ae0886c70226c5422fca5b7d049d36","sha256:b4e70e79d2f388e5a76b3022cb35a665b59ae11aa2526fe829b89ce31f5cb579"],"state_sha256":"20ec2a198db88b7908d24703acea2c99735358a8ba76a7c444b8e910dbfe3cd2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KM+fszbtMM1kSo8daLsJI0uYXETZRkTW4uEuPOeyP4Qvw1Kb2lu3T0s7mV98vufND+9DmRDENH+nz+t/UFTcDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T08:13:31.809300Z","bundle_sha256":"c7ed0aa17361aeb74061305146e1528cec546b9d7a28ff083404046b397a8c75"}}