{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:FBPDXD4YVHM76KQJSO66CFMWM3","short_pith_number":"pith:FBPDXD4Y","canonical_record":{"source":{"id":"0909.1761","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2009-09-09T18:06:16Z","cross_cats_sorted":["cs.NA","physics.plasm-ph"],"title_canon_sha256":"4fa347bfb0650079c3dd84c35a1662ffddfcf6398e3a71af89919121afcb12c2","abstract_canon_sha256":"519ca83f54767b0ce3c4abe9d55f0c255faa478e29209e45a270ad5136cf31f7"},"schema_version":"1.0"},"canonical_sha256":"285e3b8f98a9d9ff2a0993bde1159666f307138b533fcb95be8b5c94171eee5b","source":{"kind":"arxiv","id":"0909.1761","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.1761","created_at":"2026-06-03T23:06:28Z"},{"alias_kind":"arxiv_version","alias_value":"0909.1761v1","created_at":"2026-06-03T23:06:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.1761","created_at":"2026-06-03T23:06:28Z"},{"alias_kind":"pith_short_12","alias_value":"FBPDXD4YVHM7","created_at":"2026-06-03T23:06:28Z"},{"alias_kind":"pith_short_16","alias_value":"FBPDXD4YVHM76KQJ","created_at":"2026-06-03T23:06:28Z"},{"alias_kind":"pith_short_8","alias_value":"FBPDXD4Y","created_at":"2026-06-03T23:06:28Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:FBPDXD4YVHM76KQJSO66CFMWM3","target":"record","payload":{"canonical_record":{"source":{"id":"0909.1761","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2009-09-09T18:06:16Z","cross_cats_sorted":["cs.NA","physics.plasm-ph"],"title_canon_sha256":"4fa347bfb0650079c3dd84c35a1662ffddfcf6398e3a71af89919121afcb12c2","abstract_canon_sha256":"519ca83f54767b0ce3c4abe9d55f0c255faa478e29209e45a270ad5136cf31f7"},"schema_version":"1.0"},"canonical_sha256":"285e3b8f98a9d9ff2a0993bde1159666f307138b533fcb95be8b5c94171eee5b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-03T23:06:28.880478Z","signature_b64":"/Q24qIOqrnsBY0yeg06mb3c1T8Cgs9V7CJRirtnyTrRwWsgo0xWtafKSjBXf+42EEo+9cJQYm88jc57AY4MeAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"285e3b8f98a9d9ff2a0993bde1159666f307138b533fcb95be8b5c94171eee5b","last_reissued_at":"2026-06-03T23:06:28.879859Z","signature_status":"signed_v1","first_computed_at":"2026-06-03T23:06:28.879859Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0909.1761","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":"2026-06-03T23:06:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z22dCtcnbx37hrqmC6XLJVAkQXQ+tIG32l4KNgeUFsvf0n7bkML4w7HDbCkWeFkd34OQO+1RN9wH4xVKJmZPAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T10:06:55.956142Z"},"content_sha256":"1a9b2a23c18c7fca25586d5ffdb87b416db24072e80922cb1a700339e463a207","schema_version":"1.0","event_id":"sha256:1a9b2a23c18c7fca25586d5ffdb87b416db24072e80922cb1a700339e463a207"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:FBPDXD4YVHM76KQJSO66CFMWM3","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Real-Time Equilibrium Reconstruction in a Tokamak","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.NA","physics.plasm-ph"],"primary_cat":"math.NA","authors_text":"Blaise Faugeras (JAD), C\\'edric Boulbe (JAD), Jacques Blum (JAD)","submitted_at":"2009-09-09T18:06:16Z","abstract_excerpt":"This paper deals with the numerical reconstruction of the plasma current density in a Tokamak and of its equilibrium. The problem consists in the identification of a non-linear source in the 2D Grad-Shafranov equation, which governs the axisymmetric equilibrium of a plasma in a Tokamak. The experimental measurements that enable this identification are the magnetics on the vacuum vessel, but also polarimetric and interferometric measures on several chords, as well as motional Stark effect or pressure measurements. The reconstruction can be obtained in real-time using a finite element method, a "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.1761","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0909.1761/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-06-03T23:06:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"w1w9GjcCNIszBk1LQjzY4wG9NS2HhvwEHfCOk9VP8/jwXcZFLwTwXR9sF9vXs1IKTdNK6bxd474dm6p+Qa4XDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-12T10:06:55.956544Z"},"content_sha256":"7bf2b012358b697806de091557b444c1e457bec5c342a9ae9dea5a1714be0d21","schema_version":"1.0","event_id":"sha256:7bf2b012358b697806de091557b444c1e457bec5c342a9ae9dea5a1714be0d21"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/FBPDXD4YVHM76KQJSO66CFMWM3/bundle.json","state_url":"https://pith.science/pith/FBPDXD4YVHM76KQJSO66CFMWM3/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/FBPDXD4YVHM76KQJSO66CFMWM3/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":"2026-06-12T10:06:55Z","links":{"resolver":"https://pith.science/pith/FBPDXD4YVHM76KQJSO66CFMWM3","bundle":"https://pith.science/pith/FBPDXD4YVHM76KQJSO66CFMWM3/bundle.json","state":"https://pith.science/pith/FBPDXD4YVHM76KQJSO66CFMWM3/state.json","well_known_bundle":"https://pith.science/.well-known/pith/FBPDXD4YVHM76KQJSO66CFMWM3/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:FBPDXD4YVHM76KQJSO66CFMWM3","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":"519ca83f54767b0ce3c4abe9d55f0c255faa478e29209e45a270ad5136cf31f7","cross_cats_sorted":["cs.NA","physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2009-09-09T18:06:16Z","title_canon_sha256":"4fa347bfb0650079c3dd84c35a1662ffddfcf6398e3a71af89919121afcb12c2"},"schema_version":"1.0","source":{"id":"0909.1761","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0909.1761","created_at":"2026-06-03T23:06:28Z"},{"alias_kind":"arxiv_version","alias_value":"0909.1761v1","created_at":"2026-06-03T23:06:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0909.1761","created_at":"2026-06-03T23:06:28Z"},{"alias_kind":"pith_short_12","alias_value":"FBPDXD4YVHM7","created_at":"2026-06-03T23:06:28Z"},{"alias_kind":"pith_short_16","alias_value":"FBPDXD4YVHM76KQJ","created_at":"2026-06-03T23:06:28Z"},{"alias_kind":"pith_short_8","alias_value":"FBPDXD4Y","created_at":"2026-06-03T23:06:28Z"}],"graph_snapshots":[{"event_id":"sha256:7bf2b012358b697806de091557b444c1e457bec5c342a9ae9dea5a1714be0d21","target":"graph","created_at":"2026-06-03T23:06:28Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/0909.1761/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This paper deals with the numerical reconstruction of the plasma current density in a Tokamak and of its equilibrium. The problem consists in the identification of a non-linear source in the 2D Grad-Shafranov equation, which governs the axisymmetric equilibrium of a plasma in a Tokamak. The experimental measurements that enable this identification are the magnetics on the vacuum vessel, but also polarimetric and interferometric measures on several chords, as well as motional Stark effect or pressure measurements. The reconstruction can be obtained in real-time using a finite element method, a ","authors_text":"Blaise Faugeras (JAD), C\\'edric Boulbe (JAD), Jacques Blum (JAD)","cross_cats":["cs.NA","physics.plasm-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2009-09-09T18:06:16Z","title":"Real-Time Equilibrium Reconstruction in a Tokamak"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0909.1761","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":"sha256:1a9b2a23c18c7fca25586d5ffdb87b416db24072e80922cb1a700339e463a207","target":"record","created_at":"2026-06-03T23:06:28Z","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":"519ca83f54767b0ce3c4abe9d55f0c255faa478e29209e45a270ad5136cf31f7","cross_cats_sorted":["cs.NA","physics.plasm-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2009-09-09T18:06:16Z","title_canon_sha256":"4fa347bfb0650079c3dd84c35a1662ffddfcf6398e3a71af89919121afcb12c2"},"schema_version":"1.0","source":{"id":"0909.1761","kind":"arxiv","version":1}},"canonical_sha256":"285e3b8f98a9d9ff2a0993bde1159666f307138b533fcb95be8b5c94171eee5b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"285e3b8f98a9d9ff2a0993bde1159666f307138b533fcb95be8b5c94171eee5b","first_computed_at":"2026-06-03T23:06:28.879859Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-03T23:06:28.879859Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/Q24qIOqrnsBY0yeg06mb3c1T8Cgs9V7CJRirtnyTrRwWsgo0xWtafKSjBXf+42EEo+9cJQYm88jc57AY4MeAA==","signature_status":"signed_v1","signed_at":"2026-06-03T23:06:28.880478Z","signed_message":"canonical_sha256_bytes"},"source_id":"0909.1761","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1a9b2a23c18c7fca25586d5ffdb87b416db24072e80922cb1a700339e463a207","sha256:7bf2b012358b697806de091557b444c1e457bec5c342a9ae9dea5a1714be0d21"],"state_sha256":"00555cadd260618a7d2a3b6cc47d9abd7050e2491a75d227e65f20bd96c8d5d6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+HOgKjgaBzfQ+mdm/D3tWSqBvuj/dI10e/O6uG3oh/vsnMVxHzQFSM62qRqAAELZ4NTird5xKea0hxjvl41XBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-12T10:06:55.958735Z","bundle_sha256":"ec70579de77dd36ae2ba7cc0b0eac38c8db4e061983157818a98e5f7b0d9a178"}}