{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:L2NE7A7RUFYFXGC7ARF4WRSYYC","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":"d612e87f74b09d6b4d8be73c6c535f308ec32ba444c0d32cd2ff8f03dfa71728","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.DS","submitted_at":"2015-07-11T21:36:42Z","title_canon_sha256":"1f68b44d54c1c5ce2a73742d78e023ae50473ce46548729cf2fa7274a19eb46d"},"schema_version":"1.0","source":{"id":"1507.03158","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1507.03158","created_at":"2026-05-18T01:36:59Z"},{"alias_kind":"arxiv_version","alias_value":"1507.03158v1","created_at":"2026-05-18T01:36:59Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1507.03158","created_at":"2026-05-18T01:36:59Z"},{"alias_kind":"pith_short_12","alias_value":"L2NE7A7RUFYF","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_16","alias_value":"L2NE7A7RUFYFXGC7","created_at":"2026-05-18T12:29:29Z"},{"alias_kind":"pith_short_8","alias_value":"L2NE7A7R","created_at":"2026-05-18T12:29:29Z"}],"graph_snapshots":[{"event_id":"sha256:92fb85d8b17c5c1cda3c9c5906e6e5807ff6878fae0665119ad0b029dc7c1cff","target":"graph","created_at":"2026-05-18T01:36:59Z","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":"This work is devoted to the construction and study of a mathematical model of hydropower unit, consisting of synchronous generator, hydraulic turbine, and speed governor. It is motivated by the accident happened on the Sayano-Shushenskaya hydropower plant in 2009 year. Parameters of the Sayano-Shushenskaya hydropower plant were used for modeling the system. Oscillations in zones, which were not recommended for operation, were found. The obtained results are consistent with the full-scale test results carried out for hydropower units of the Sayano-Shushenskaya hydropower plant in 1988.","authors_text":"E.P. Solovyeva, G.A. Leonov, N.V. Kuznetsov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.DS","submitted_at":"2015-07-11T21:36:42Z","title":"A dynamical model of Sayano-Shushenskaya hydropower plant: stability, oscillations, and accident"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1507.03158","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:fb3a412c153f9405052288dad5d0b533ef69eb51790beefe1c6a0b6f5097d2cf","target":"record","created_at":"2026-05-18T01:36:59Z","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":"d612e87f74b09d6b4d8be73c6c535f308ec32ba444c0d32cd2ff8f03dfa71728","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.DS","submitted_at":"2015-07-11T21:36:42Z","title_canon_sha256":"1f68b44d54c1c5ce2a73742d78e023ae50473ce46548729cf2fa7274a19eb46d"},"schema_version":"1.0","source":{"id":"1507.03158","kind":"arxiv","version":1}},"canonical_sha256":"5e9a4f83f1a1705b985f044bcb4658c09c981797adae683b4d6b5d704b8f1305","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5e9a4f83f1a1705b985f044bcb4658c09c981797adae683b4d6b5d704b8f1305","first_computed_at":"2026-05-18T01:36:59.539768Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:36:59.539768Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wgc46GSBXQxp+X6tZsReN3+pc1v25I41VltMUs0Y6hAv3zAFJaNSNv+ZzOqIlJTROXUCYyucIUHBYXi8Qa+QAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:36:59.540271Z","signed_message":"canonical_sha256_bytes"},"source_id":"1507.03158","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:fb3a412c153f9405052288dad5d0b533ef69eb51790beefe1c6a0b6f5097d2cf","sha256:92fb85d8b17c5c1cda3c9c5906e6e5807ff6878fae0665119ad0b029dc7c1cff"],"state_sha256":"c95e21c65e75931423ce7e55c144bea6ba20e8e063e6ff4d307acc5df45a3a88"}