{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:1997:EBA52PRJR57OOHGIZDHXN3T5ZC","short_pith_number":"pith:EBA52PRJ","canonical_record":{"source":{"id":"solv-int/9704002","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"solv-int","submitted_at":"1997-03-31T12:58:03Z","cross_cats_sorted":["hep-th","nlin.SI"],"title_canon_sha256":"1f1c738e2265b5b0dde84ce649fbbd6e7451e31d6cb2c4f32b1b7d904d067345","abstract_canon_sha256":"8f6d2471219b685c90683c1ff7f7eff739bb42a1439520fb2b331ec98cecca9b"},"schema_version":"1.0"},"canonical_sha256":"2041dd3e298f7ee71cc8c8cf76ee7dc8919ac9636659cc1c20a02ec78e4b7352","source":{"kind":"arxiv","id":"solv-int/9704002","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"solv-int/9704002","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"arxiv_version","alias_value":"solv-int/9704002v1","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.solv-int/9704002","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"pith_short_12","alias_value":"EBA52PRJR57O","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"EBA52PRJR57OOHGI","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"EBA52PRJ","created_at":"2026-05-18T12:25:48Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:1997:EBA52PRJR57OOHGIZDHXN3T5ZC","target":"record","payload":{"canonical_record":{"source":{"id":"solv-int/9704002","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"solv-int","submitted_at":"1997-03-31T12:58:03Z","cross_cats_sorted":["hep-th","nlin.SI"],"title_canon_sha256":"1f1c738e2265b5b0dde84ce649fbbd6e7451e31d6cb2c4f32b1b7d904d067345","abstract_canon_sha256":"8f6d2471219b685c90683c1ff7f7eff739bb42a1439520fb2b331ec98cecca9b"},"schema_version":"1.0"},"canonical_sha256":"2041dd3e298f7ee71cc8c8cf76ee7dc8919ac9636659cc1c20a02ec78e4b7352","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:04:59.971631Z","signature_b64":"OvkVATK2titiJQNZAhODk4vYABlDVRGPXPLf/AMGg1oiVoK3EVC5ewvVeHq+S5jR+i4XqXAAaWiDtOjY5r6fCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2041dd3e298f7ee71cc8c8cf76ee7dc8919ac9636659cc1c20a02ec78e4b7352","last_reissued_at":"2026-05-18T01:04:59.971137Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:04:59.971137Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"solv-int/9704002","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":"2026-05-18T01:04:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0YPwCuYnFpMWh6hdbADxlanAc6LnPyMnU3MJIGn8W2FwT+iU+zeecUQwWtQ2yX7kNYGm++p4vhz6g/nyKZ9KDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:37:20.527345Z"},"content_sha256":"40b07e8f4fe8e5b1fca29e07c6cefc7000075ea65736637c95948efecbfa8acb","schema_version":"1.0","event_id":"sha256:40b07e8f4fe8e5b1fca29e07c6cefc7000075ea65736637c95948efecbfa8acb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:1997:EBA52PRJR57OOHGIZDHXN3T5ZC","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Extended matrix Gelfand-Dickey hierarchies: reduction to classical Lie algebras","license":"","headline":"","cross_cats":["hep-th","nlin.SI"],"primary_cat":"solv-int","authors_text":"Ian Marshall, Laszlo Feher","submitted_at":"1997-03-31T12:58:03Z","abstract_excerpt":"The Drinfeld-Sokolov reduction method has been used to associate with $gl_n$ extensions of the matrix r-KdV system. Reductions of these systems to the fixed point sets of involutive Poisson maps, implementing reduction of $gl_n$ to classical Lie algebras of type $B, C, D$, are here presented. Modifications corresponding, in the first place to factorisation of the Lax operator, and then to Wakimoto realisations of the current algebra components of the factorisation, are also described."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"solv-int/9704002","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":"2026-05-18T01:04:59Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"L75HH39ThN+dDTiXz0oTITix3NzpbjfkWADg+w+P1I9+kPp/Y/JkJGYbSZEO3Fje1YpvjNPvqg3UAL8KClqpBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T21:37:20.527693Z"},"content_sha256":"9f6fce2b2a594676ea701cd708bba08496ea1bc2293550b4d2177340501e7cc2","schema_version":"1.0","event_id":"sha256:9f6fce2b2a594676ea701cd708bba08496ea1bc2293550b4d2177340501e7cc2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/EBA52PRJR57OOHGIZDHXN3T5ZC/bundle.json","state_url":"https://pith.science/pith/EBA52PRJR57OOHGIZDHXN3T5ZC/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/EBA52PRJR57OOHGIZDHXN3T5ZC/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":"2026-06-02T21:37:20Z","links":{"resolver":"https://pith.science/pith/EBA52PRJR57OOHGIZDHXN3T5ZC","bundle":"https://pith.science/pith/EBA52PRJR57OOHGIZDHXN3T5ZC/bundle.json","state":"https://pith.science/pith/EBA52PRJR57OOHGIZDHXN3T5ZC/state.json","well_known_bundle":"https://pith.science/.well-known/pith/EBA52PRJR57OOHGIZDHXN3T5ZC/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1997:EBA52PRJR57OOHGIZDHXN3T5ZC","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":"8f6d2471219b685c90683c1ff7f7eff739bb42a1439520fb2b331ec98cecca9b","cross_cats_sorted":["hep-th","nlin.SI"],"license":"","primary_cat":"solv-int","submitted_at":"1997-03-31T12:58:03Z","title_canon_sha256":"1f1c738e2265b5b0dde84ce649fbbd6e7451e31d6cb2c4f32b1b7d904d067345"},"schema_version":"1.0","source":{"id":"solv-int/9704002","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"solv-int/9704002","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"arxiv_version","alias_value":"solv-int/9704002v1","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.solv-int/9704002","created_at":"2026-05-18T01:04:59Z"},{"alias_kind":"pith_short_12","alias_value":"EBA52PRJR57O","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_16","alias_value":"EBA52PRJR57OOHGI","created_at":"2026-05-18T12:25:48Z"},{"alias_kind":"pith_short_8","alias_value":"EBA52PRJ","created_at":"2026-05-18T12:25:48Z"}],"graph_snapshots":[{"event_id":"sha256:9f6fce2b2a594676ea701cd708bba08496ea1bc2293550b4d2177340501e7cc2","target":"graph","created_at":"2026-05-18T01:04:59Z","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 Drinfeld-Sokolov reduction method has been used to associate with $gl_n$ extensions of the matrix r-KdV system. Reductions of these systems to the fixed point sets of involutive Poisson maps, implementing reduction of $gl_n$ to classical Lie algebras of type $B, C, D$, are here presented. Modifications corresponding, in the first place to factorisation of the Lax operator, and then to Wakimoto realisations of the current algebra components of the factorisation, are also described.","authors_text":"Ian Marshall, Laszlo Feher","cross_cats":["hep-th","nlin.SI"],"headline":"","license":"","primary_cat":"solv-int","submitted_at":"1997-03-31T12:58:03Z","title":"Extended matrix Gelfand-Dickey hierarchies: reduction to classical Lie algebras"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"solv-int/9704002","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":"sha256:40b07e8f4fe8e5b1fca29e07c6cefc7000075ea65736637c95948efecbfa8acb","target":"record","created_at":"2026-05-18T01:04:59Z","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":"8f6d2471219b685c90683c1ff7f7eff739bb42a1439520fb2b331ec98cecca9b","cross_cats_sorted":["hep-th","nlin.SI"],"license":"","primary_cat":"solv-int","submitted_at":"1997-03-31T12:58:03Z","title_canon_sha256":"1f1c738e2265b5b0dde84ce649fbbd6e7451e31d6cb2c4f32b1b7d904d067345"},"schema_version":"1.0","source":{"id":"solv-int/9704002","kind":"arxiv","version":1}},"canonical_sha256":"2041dd3e298f7ee71cc8c8cf76ee7dc8919ac9636659cc1c20a02ec78e4b7352","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2041dd3e298f7ee71cc8c8cf76ee7dc8919ac9636659cc1c20a02ec78e4b7352","first_computed_at":"2026-05-18T01:04:59.971137Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:04:59.971137Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OvkVATK2titiJQNZAhODk4vYABlDVRGPXPLf/AMGg1oiVoK3EVC5ewvVeHq+S5jR+i4XqXAAaWiDtOjY5r6fCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:04:59.971631Z","signed_message":"canonical_sha256_bytes"},"source_id":"solv-int/9704002","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:40b07e8f4fe8e5b1fca29e07c6cefc7000075ea65736637c95948efecbfa8acb","sha256:9f6fce2b2a594676ea701cd708bba08496ea1bc2293550b4d2177340501e7cc2"],"state_sha256":"f430260ee1fddadfc5d79fc94eaaf50bce8eebbfc770edd3479b8cd0bf3e0732"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"66DCyRPxZbUoOt61nfFDHAIg4NUvncKB4cjv/rtRxvfwOvVgYZelqFSQ7pZJvEbuxoOdKzklHmF+J8qlXkzUCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T21:37:20.529598Z","bundle_sha256":"b66d7b44d5549ab3ed49fdfda5871de46d43ad7be195e2ef40c798f23847ec82"}}