{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:47PHASGVCOZOEAPZBUXCTNL2PK","short_pith_number":"pith:47PHASGV","canonical_record":{"source":{"id":"1205.2304","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2012-05-10T16:36:49Z","cross_cats_sorted":[],"title_canon_sha256":"ccc3bc00dfcc214f74769ef52cd4c119e83f4a24b4d5ee344683cb34440fadd5","abstract_canon_sha256":"ccc3bc00dfcc214f74769ef52cd4c119e83f4a24b4d5ee344683cb34440fadd5"},"schema_version":"1.0"},"canonical_sha256":"e7de7048d513b2e201f90d2e29b57a7a925d01d5290daa231bfe8a64113af978","source":{"kind":"arxiv","id":"1205.2304","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.2304","created_at":"2026-05-18T03:55:56Z"},{"alias_kind":"arxiv_version","alias_value":"1205.2304v1","created_at":"2026-05-18T03:55:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.2304","created_at":"2026-05-18T03:55:56Z"},{"alias_kind":"pith_short_12","alias_value":"47PHASGVCOZO","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"47PHASGVCOZOEAPZ","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"47PHASGV","created_at":"2026-05-18T12:26:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:47PHASGVCOZOEAPZBUXCTNL2PK","target":"record","payload":{"canonical_record":{"source":{"id":"1205.2304","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2012-05-10T16:36:49Z","cross_cats_sorted":[],"title_canon_sha256":"ccc3bc00dfcc214f74769ef52cd4c119e83f4a24b4d5ee344683cb34440fadd5","abstract_canon_sha256":"ccc3bc00dfcc214f74769ef52cd4c119e83f4a24b4d5ee344683cb34440fadd5"},"schema_version":"1.0"},"canonical_sha256":"e7de7048d513b2e201f90d2e29b57a7a925d01d5290daa231bfe8a64113af978","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:55:56.647704Z","signature_b64":"DTkbT4CSNguthoKzRl/4LG2nyddqMTts8wjeVIMdxufre1B339VEQBgL4Ofqlh32coqKik/Y4SJFJLXiQ0IsAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e7de7048d513b2e201f90d2e29b57a7a925d01d5290daa231bfe8a64113af978","last_reissued_at":"2026-05-18T03:55:56.647180Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:55:56.647180Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.2304","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":"2026-05-18T03:55:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"A4lWz0IXVXEchMZUuJlteIkh/OI7zQUnWCCX23FY+t5x+2xOqSA8S/H3mYjw91L55gymcZTwsMr6QDhO5GAABw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T05:22:39.368664Z"},"content_sha256":"da06f0beca010b5c912a4d3c75082ba2968db743614b5682254df81d291b131b","schema_version":"1.0","event_id":"sha256:da06f0beca010b5c912a4d3c75082ba2968db743614b5682254df81d291b131b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:47PHASGVCOZOEAPZBUXCTNL2PK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Negative Curvature and Second-order optimality for regularized SQP","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.OC","authors_text":"Daniel Robinson, Phillip Gill, Vyacheslav Kungurtsev","submitted_at":"2012-05-10T16:36:49Z","abstract_excerpt":"Negative Curvature and Second-order optimality for regularized SQP"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.2304","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":"2026-05-18T03:55:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vJkdbqvzlNAFA/0629Xusyr9IkLz+Cl9m+IXrR2MWqgFHzGNSw3g38CkeS6u44Lp9TzowsJlAE0jKorrPOfnCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T05:22:39.369012Z"},"content_sha256":"9473868fd359a758470cc4d7f81baf21957fea3bdae9b8a732e6efc93d7657f2","schema_version":"1.0","event_id":"sha256:9473868fd359a758470cc4d7f81baf21957fea3bdae9b8a732e6efc93d7657f2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/47PHASGVCOZOEAPZBUXCTNL2PK/bundle.json","state_url":"https://pith.science/pith/47PHASGVCOZOEAPZBUXCTNL2PK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/47PHASGVCOZOEAPZBUXCTNL2PK/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":"2026-05-28T05:22:39Z","links":{"resolver":"https://pith.science/pith/47PHASGVCOZOEAPZBUXCTNL2PK","bundle":"https://pith.science/pith/47PHASGVCOZOEAPZBUXCTNL2PK/bundle.json","state":"https://pith.science/pith/47PHASGVCOZOEAPZBUXCTNL2PK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/47PHASGVCOZOEAPZBUXCTNL2PK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:47PHASGVCOZOEAPZBUXCTNL2PK","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":"ccc3bc00dfcc214f74769ef52cd4c119e83f4a24b4d5ee344683cb34440fadd5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2012-05-10T16:36:49Z","title_canon_sha256":"ccc3bc00dfcc214f74769ef52cd4c119e83f4a24b4d5ee344683cb34440fadd5"},"schema_version":"1.0","source":{"id":"1205.2304","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.2304","created_at":"2026-05-18T03:55:56Z"},{"alias_kind":"arxiv_version","alias_value":"1205.2304v1","created_at":"2026-05-18T03:55:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.2304","created_at":"2026-05-18T03:55:56Z"},{"alias_kind":"pith_short_12","alias_value":"47PHASGVCOZO","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"47PHASGVCOZOEAPZ","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"47PHASGV","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:9473868fd359a758470cc4d7f81baf21957fea3bdae9b8a732e6efc93d7657f2","target":"graph","created_at":"2026-05-18T03:55:56Z","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":"Negative Curvature and Second-order optimality for regularized SQP","authors_text":"Daniel Robinson, Phillip Gill, Vyacheslav Kungurtsev","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2012-05-10T16:36:49Z","title":"Negative Curvature and Second-order optimality for regularized SQP"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.2304","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:da06f0beca010b5c912a4d3c75082ba2968db743614b5682254df81d291b131b","target":"record","created_at":"2026-05-18T03:55:56Z","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":"ccc3bc00dfcc214f74769ef52cd4c119e83f4a24b4d5ee344683cb34440fadd5","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2012-05-10T16:36:49Z","title_canon_sha256":"ccc3bc00dfcc214f74769ef52cd4c119e83f4a24b4d5ee344683cb34440fadd5"},"schema_version":"1.0","source":{"id":"1205.2304","kind":"arxiv","version":1}},"canonical_sha256":"e7de7048d513b2e201f90d2e29b57a7a925d01d5290daa231bfe8a64113af978","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e7de7048d513b2e201f90d2e29b57a7a925d01d5290daa231bfe8a64113af978","first_computed_at":"2026-05-18T03:55:56.647180Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:55:56.647180Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DTkbT4CSNguthoKzRl/4LG2nyddqMTts8wjeVIMdxufre1B339VEQBgL4Ofqlh32coqKik/Y4SJFJLXiQ0IsAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:55:56.647704Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.2304","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:da06f0beca010b5c912a4d3c75082ba2968db743614b5682254df81d291b131b","sha256:9473868fd359a758470cc4d7f81baf21957fea3bdae9b8a732e6efc93d7657f2"],"state_sha256":"12036d923ad330c218bbe2a8cea03361417fc0b67241f3b8bd24bb15ce865978"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"VXO6LWfcCDXW5aQxBgn/eds9lJ+QCMat7BtvNNmWg+HpbdapnYt6mNybBXkpY3nULPDnFkAI+BjlI4/VazExDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T05:22:39.371021Z","bundle_sha256":"5fe9e3b2fe3f4fdc4f7950784d294a96967a9ae2011d02bd838ee0275a3f662c"}}