{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:JD726NF737BMPJJABO4OHQWLWH","short_pith_number":"pith:JD726NF7","canonical_record":{"source":{"id":"1512.05185","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2015-12-16T14:24:59Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"ca44c05140d955d4ed35821bdff1c6ca6ebf0fe62e27f2bb2f6c187735a610d4","abstract_canon_sha256":"dacede2f1d442d4b9f584914d27a5ca0e6fb77d241761e7127dd87d000863400"},"schema_version":"1.0"},"canonical_sha256":"48ffaf34bfdfc2c7a5200bb8e3c2cbb1ec95c6de82fbf41502717051c90261b1","source":{"kind":"arxiv","id":"1512.05185","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.05185","created_at":"2026-06-04T17:09:49Z"},{"alias_kind":"arxiv_version","alias_value":"1512.05185v3","created_at":"2026-06-04T17:09:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.05185","created_at":"2026-06-04T17:09:49Z"},{"alias_kind":"pith_short_12","alias_value":"JD726NF737BM","created_at":"2026-06-04T17:09:49Z"},{"alias_kind":"pith_short_16","alias_value":"JD726NF737BMPJJA","created_at":"2026-06-04T17:09:49Z"},{"alias_kind":"pith_short_8","alias_value":"JD726NF7","created_at":"2026-06-04T17:09:49Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:JD726NF737BMPJJABO4OHQWLWH","target":"record","payload":{"canonical_record":{"source":{"id":"1512.05185","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2015-12-16T14:24:59Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"ca44c05140d955d4ed35821bdff1c6ca6ebf0fe62e27f2bb2f6c187735a610d4","abstract_canon_sha256":"dacede2f1d442d4b9f584914d27a5ca0e6fb77d241761e7127dd87d000863400"},"schema_version":"1.0"},"canonical_sha256":"48ffaf34bfdfc2c7a5200bb8e3c2cbb1ec95c6de82fbf41502717051c90261b1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-04T17:09:49.721768Z","signature_b64":"LleqCjYJ8u0w9EpHEjd/nQ3JOCjfwHnP23KCZLESN/sIKh9I6Bnb9kMh1BKJnu01uzTm9MhDbC/4dnF47GWpDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"48ffaf34bfdfc2c7a5200bb8e3c2cbb1ec95c6de82fbf41502717051c90261b1","last_reissued_at":"2026-06-04T17:09:49.721255Z","signature_status":"signed_v1","first_computed_at":"2026-06-04T17:09:49.721255Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.05185","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-06-04T17:09:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IuOlSoQXAum3Ih/r6w7u98sMr2mg666zEgMUuSH4dwQ8YQlMkcaNIvX5zH7uWlhSYNa7V1x+fXc3Fnjhue/0CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T12:12:08.957112Z"},"content_sha256":"73892332a68619669eaa457f6660c117a2091f0ad1bdb7af6890a2babc69b725","schema_version":"1.0","event_id":"sha256:73892332a68619669eaa457f6660c117a2091f0ad1bdb7af6890a2babc69b725"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:JD726NF737BMPJJABO4OHQWLWH","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Power System Differential-Algebraic Equations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SY"],"primary_cat":"eess.SY","authors_text":"Bin Wang, Kai Sun, Yang Liu","submitted_at":"2015-12-16T14:24:59Z","abstract_excerpt":"This document presents an introduction of two commonly used power system differential algebraic equations for studying electromechanical oscillation and transient stability. Two types of generator models are used to formulate the power system model, respectively: the second-order classical model and the fourth-order generator model. An example is provided on the IEEE 9-bus system."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.05185","kind":"arxiv","version":3},"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/1512.05185/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":"2026-06-04T17:09:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Kea3dkyfsscHZPXEBVToxdUCOTTVipOC+0FK2Kunl8GHGg58aoOLzlAzzDiiExzjNba0HAOa3B72baRGWCczBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T12:12:08.957509Z"},"content_sha256":"1e901bd98687b3c6221986719725ef9dd88e80f6f0c83d9d6ba21ed9f45c728f","schema_version":"1.0","event_id":"sha256:1e901bd98687b3c6221986719725ef9dd88e80f6f0c83d9d6ba21ed9f45c728f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/JD726NF737BMPJJABO4OHQWLWH/bundle.json","state_url":"https://pith.science/pith/JD726NF737BMPJJABO4OHQWLWH/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/JD726NF737BMPJJABO4OHQWLWH/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":"2026-06-08T12:12:08Z","links":{"resolver":"https://pith.science/pith/JD726NF737BMPJJABO4OHQWLWH","bundle":"https://pith.science/pith/JD726NF737BMPJJABO4OHQWLWH/bundle.json","state":"https://pith.science/pith/JD726NF737BMPJJABO4OHQWLWH/state.json","well_known_bundle":"https://pith.science/.well-known/pith/JD726NF737BMPJJABO4OHQWLWH/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:JD726NF737BMPJJABO4OHQWLWH","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":"dacede2f1d442d4b9f584914d27a5ca0e6fb77d241761e7127dd87d000863400","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2015-12-16T14:24:59Z","title_canon_sha256":"ca44c05140d955d4ed35821bdff1c6ca6ebf0fe62e27f2bb2f6c187735a610d4"},"schema_version":"1.0","source":{"id":"1512.05185","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.05185","created_at":"2026-06-04T17:09:49Z"},{"alias_kind":"arxiv_version","alias_value":"1512.05185v3","created_at":"2026-06-04T17:09:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.05185","created_at":"2026-06-04T17:09:49Z"},{"alias_kind":"pith_short_12","alias_value":"JD726NF737BM","created_at":"2026-06-04T17:09:49Z"},{"alias_kind":"pith_short_16","alias_value":"JD726NF737BMPJJA","created_at":"2026-06-04T17:09:49Z"},{"alias_kind":"pith_short_8","alias_value":"JD726NF7","created_at":"2026-06-04T17:09:49Z"}],"graph_snapshots":[{"event_id":"sha256:1e901bd98687b3c6221986719725ef9dd88e80f6f0c83d9d6ba21ed9f45c728f","target":"graph","created_at":"2026-06-04T17:09:49Z","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/1512.05185/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"This document presents an introduction of two commonly used power system differential algebraic equations for studying electromechanical oscillation and transient stability. Two types of generator models are used to formulate the power system model, respectively: the second-order classical model and the fourth-order generator model. An example is provided on the IEEE 9-bus system.","authors_text":"Bin Wang, Kai Sun, Yang Liu","cross_cats":["cs.SY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2015-12-16T14:24:59Z","title":"Power System Differential-Algebraic Equations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.05185","kind":"arxiv","version":3},"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":"sha256:73892332a68619669eaa457f6660c117a2091f0ad1bdb7af6890a2babc69b725","target":"record","created_at":"2026-06-04T17:09:49Z","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":"dacede2f1d442d4b9f584914d27a5ca0e6fb77d241761e7127dd87d000863400","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2015-12-16T14:24:59Z","title_canon_sha256":"ca44c05140d955d4ed35821bdff1c6ca6ebf0fe62e27f2bb2f6c187735a610d4"},"schema_version":"1.0","source":{"id":"1512.05185","kind":"arxiv","version":3}},"canonical_sha256":"48ffaf34bfdfc2c7a5200bb8e3c2cbb1ec95c6de82fbf41502717051c90261b1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"48ffaf34bfdfc2c7a5200bb8e3c2cbb1ec95c6de82fbf41502717051c90261b1","first_computed_at":"2026-06-04T17:09:49.721255Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-04T17:09:49.721255Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LleqCjYJ8u0w9EpHEjd/nQ3JOCjfwHnP23KCZLESN/sIKh9I6Bnb9kMh1BKJnu01uzTm9MhDbC/4dnF47GWpDQ==","signature_status":"signed_v1","signed_at":"2026-06-04T17:09:49.721768Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.05185","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:73892332a68619669eaa457f6660c117a2091f0ad1bdb7af6890a2babc69b725","sha256:1e901bd98687b3c6221986719725ef9dd88e80f6f0c83d9d6ba21ed9f45c728f"],"state_sha256":"c8fb8627c883f686530933e2e89bef6fdf84e3d5d53fbd11b2cca9437e7427e7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kPiNetKcaESs68KlhCd5Tz2Cn4gmflgOA7pQilijroOq2SHFuvFnu5oVfXmWpRCZpYDqZJ7Vtf4RlEemxIXJBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T12:12:08.959514Z","bundle_sha256":"e672b54183cdd9ce75c84a9ffc05f7641816e43974e9e79318178714e8b4edd6"}}