{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:2PSRVKE2K7PG6SGL4UGYMIHAEW","short_pith_number":"pith:2PSRVKE2","canonical_record":{"source":{"id":"1110.5655","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2011-10-25T20:16:54Z","cross_cats_sorted":["math.DG","math.MP"],"title_canon_sha256":"6a22d9f42827755d55a73a5192517ca98ee8372d1895bd943347e61e34651aee","abstract_canon_sha256":"f2b4ab4227a490b9949c398f2ee4e65418acda0d8876de8f84ff865d38d00221"},"schema_version":"1.0"},"canonical_sha256":"d3e51aa89a57de6f48cbe50d8620e025a1638ed920a82f3063f1e958cbf86682","source":{"kind":"arxiv","id":"1110.5655","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.5655","created_at":"2026-05-18T02:50:01Z"},{"alias_kind":"arxiv_version","alias_value":"1110.5655v2","created_at":"2026-05-18T02:50:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.5655","created_at":"2026-05-18T02:50:01Z"},{"alias_kind":"pith_short_12","alias_value":"2PSRVKE2K7PG","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2PSRVKE2K7PG6SGL","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2PSRVKE2","created_at":"2026-05-18T12:26:18Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:2PSRVKE2K7PG6SGL4UGYMIHAEW","target":"record","payload":{"canonical_record":{"source":{"id":"1110.5655","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2011-10-25T20:16:54Z","cross_cats_sorted":["math.DG","math.MP"],"title_canon_sha256":"6a22d9f42827755d55a73a5192517ca98ee8372d1895bd943347e61e34651aee","abstract_canon_sha256":"f2b4ab4227a490b9949c398f2ee4e65418acda0d8876de8f84ff865d38d00221"},"schema_version":"1.0"},"canonical_sha256":"d3e51aa89a57de6f48cbe50d8620e025a1638ed920a82f3063f1e958cbf86682","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:50:01.108293Z","signature_b64":"D+IaGzL+dcs5pPtjp+3qalfK+dw1bRolND2lrgUw/5ukhft2iUiPc/XhYbMtkIF4fHYwcxhAd7CvPYYqvgSQBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d3e51aa89a57de6f48cbe50d8620e025a1638ed920a82f3063f1e958cbf86682","last_reissued_at":"2026-05-18T02:50:01.107836Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:50:01.107836Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1110.5655","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":"2026-05-18T02:50:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1+zDhRmNjcV3n1YaG/qzapEyFDJBa7/mpemsbQauCeCsL11w4HdL0DaSe4hSD0hvx8zNSeimbcT5YSJYojo0BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T16:13:06.704028Z"},"content_sha256":"d77cd61ac5936bfa25bf5ef9342525ca30d30181bb56b86add0bde1cae5ab80d","schema_version":"1.0","event_id":"sha256:d77cd61ac5936bfa25bf5ef9342525ca30d30181bb56b86add0bde1cae5ab80d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:2PSRVKE2K7PG6SGL4UGYMIHAEW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Geometric Approaches for Generating Prolongations for Nonlinear Partial Differential Equations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["math.DG","math.MP"],"primary_cat":"math-ph","authors_text":"Paul Bracken","submitted_at":"2011-10-25T20:16:54Z","abstract_excerpt":"The prolongation structure of a two-by-two problem is formulated very generally in terms of exterior differential forms on a standard representation of Pauli matrices. The differential system is general without making reference to any specific equation. An integrability condition is provided which gives by construction the equation to be investigated and whose components involve the structure constants of an SU(2) Lie algebra. Along side this, a related, different kind of prolongation, a type of Wahlquist-Estabrook prolongation, over a closed differential ideal is discussed and some applicatio"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.5655","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":"2026-05-18T02:50:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"U3GB8QbRfzCycp0e6Hrw2qr4s1qGprr/UmdfVuZrXpZbyNkGV9AeUHVb/IO8HturBGaRrHPgBDgoemcGrKsYAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T16:13:06.704392Z"},"content_sha256":"76e947732d032fd417a0460be5539c08a3c3d3bdcbf3ffd7bf4ee32c0ab1e37d","schema_version":"1.0","event_id":"sha256:76e947732d032fd417a0460be5539c08a3c3d3bdcbf3ffd7bf4ee32c0ab1e37d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2PSRVKE2K7PG6SGL4UGYMIHAEW/bundle.json","state_url":"https://pith.science/pith/2PSRVKE2K7PG6SGL4UGYMIHAEW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2PSRVKE2K7PG6SGL4UGYMIHAEW/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":"2026-06-26T16:13:06Z","links":{"resolver":"https://pith.science/pith/2PSRVKE2K7PG6SGL4UGYMIHAEW","bundle":"https://pith.science/pith/2PSRVKE2K7PG6SGL4UGYMIHAEW/bundle.json","state":"https://pith.science/pith/2PSRVKE2K7PG6SGL4UGYMIHAEW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2PSRVKE2K7PG6SGL4UGYMIHAEW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:2PSRVKE2K7PG6SGL4UGYMIHAEW","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":"f2b4ab4227a490b9949c398f2ee4e65418acda0d8876de8f84ff865d38d00221","cross_cats_sorted":["math.DG","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2011-10-25T20:16:54Z","title_canon_sha256":"6a22d9f42827755d55a73a5192517ca98ee8372d1895bd943347e61e34651aee"},"schema_version":"1.0","source":{"id":"1110.5655","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1110.5655","created_at":"2026-05-18T02:50:01Z"},{"alias_kind":"arxiv_version","alias_value":"1110.5655v2","created_at":"2026-05-18T02:50:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1110.5655","created_at":"2026-05-18T02:50:01Z"},{"alias_kind":"pith_short_12","alias_value":"2PSRVKE2K7PG","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_16","alias_value":"2PSRVKE2K7PG6SGL","created_at":"2026-05-18T12:26:18Z"},{"alias_kind":"pith_short_8","alias_value":"2PSRVKE2","created_at":"2026-05-18T12:26:18Z"}],"graph_snapshots":[{"event_id":"sha256:76e947732d032fd417a0460be5539c08a3c3d3bdcbf3ffd7bf4ee32c0ab1e37d","target":"graph","created_at":"2026-05-18T02:50:01Z","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":"The prolongation structure of a two-by-two problem is formulated very generally in terms of exterior differential forms on a standard representation of Pauli matrices. The differential system is general without making reference to any specific equation. An integrability condition is provided which gives by construction the equation to be investigated and whose components involve the structure constants of an SU(2) Lie algebra. Along side this, a related, different kind of prolongation, a type of Wahlquist-Estabrook prolongation, over a closed differential ideal is discussed and some applicatio","authors_text":"Paul Bracken","cross_cats":["math.DG","math.MP"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2011-10-25T20:16:54Z","title":"Geometric Approaches for Generating Prolongations for Nonlinear Partial Differential Equations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1110.5655","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:d77cd61ac5936bfa25bf5ef9342525ca30d30181bb56b86add0bde1cae5ab80d","target":"record","created_at":"2026-05-18T02:50:01Z","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":"f2b4ab4227a490b9949c398f2ee4e65418acda0d8876de8f84ff865d38d00221","cross_cats_sorted":["math.DG","math.MP"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math-ph","submitted_at":"2011-10-25T20:16:54Z","title_canon_sha256":"6a22d9f42827755d55a73a5192517ca98ee8372d1895bd943347e61e34651aee"},"schema_version":"1.0","source":{"id":"1110.5655","kind":"arxiv","version":2}},"canonical_sha256":"d3e51aa89a57de6f48cbe50d8620e025a1638ed920a82f3063f1e958cbf86682","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d3e51aa89a57de6f48cbe50d8620e025a1638ed920a82f3063f1e958cbf86682","first_computed_at":"2026-05-18T02:50:01.107836Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:50:01.107836Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"D+IaGzL+dcs5pPtjp+3qalfK+dw1bRolND2lrgUw/5ukhft2iUiPc/XhYbMtkIF4fHYwcxhAd7CvPYYqvgSQBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:50:01.108293Z","signed_message":"canonical_sha256_bytes"},"source_id":"1110.5655","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d77cd61ac5936bfa25bf5ef9342525ca30d30181bb56b86add0bde1cae5ab80d","sha256:76e947732d032fd417a0460be5539c08a3c3d3bdcbf3ffd7bf4ee32c0ab1e37d"],"state_sha256":"e7431ce809aeac81c2bbde960fa6b0cfbd7410ebc8d91e583efd5f07dcae8f6e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"HNirh2rLZF7dvYeEDtOxhPEY3QeSc1zlrIuVjjDPCat/iaYMAsU4x5jKJzOMOYUrLvvU3KJfJfMbLW6Xfw3ODw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T16:13:06.706354Z","bundle_sha256":"151cee52f83a7651a091b67b476ec1307f9d49966a6f9d66b0792eb912f3af16"}}