{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:GKRQWFJQHDNXQVVERZDQWL2VYM","short_pith_number":"pith:GKRQWFJQ","canonical_record":{"source":{"id":"2502.20022","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2025-02-27T12:01:07Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"e576679dc5c928418eabb32d0931f8f00adc54167b33539940ecf326c191a6b5","abstract_canon_sha256":"1d6972cb443a95808b72402dd096aecf1ae4179d99efd59c6f9ed0f566852e8a"},"schema_version":"1.0"},"canonical_sha256":"32a30b153038db7856a48e470b2f55c326e4a8429eb5d78bf726210213d5ea2c","source":{"kind":"arxiv","id":"2502.20022","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.20022","created_at":"2026-07-05T10:20:56Z"},{"alias_kind":"arxiv_version","alias_value":"2502.20022v1","created_at":"2026-07-05T10:20:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.20022","created_at":"2026-07-05T10:20:56Z"},{"alias_kind":"pith_short_12","alias_value":"GKRQWFJQHDNX","created_at":"2026-07-05T10:20:56Z"},{"alias_kind":"pith_short_16","alias_value":"GKRQWFJQHDNXQVVE","created_at":"2026-07-05T10:20:56Z"},{"alias_kind":"pith_short_8","alias_value":"GKRQWFJQ","created_at":"2026-07-05T10:20:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:GKRQWFJQHDNXQVVERZDQWL2VYM","target":"record","payload":{"canonical_record":{"source":{"id":"2502.20022","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2025-02-27T12:01:07Z","cross_cats_sorted":["cs.SY"],"title_canon_sha256":"e576679dc5c928418eabb32d0931f8f00adc54167b33539940ecf326c191a6b5","abstract_canon_sha256":"1d6972cb443a95808b72402dd096aecf1ae4179d99efd59c6f9ed0f566852e8a"},"schema_version":"1.0"},"canonical_sha256":"32a30b153038db7856a48e470b2f55c326e4a8429eb5d78bf726210213d5ea2c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:20:56.968436Z","signature_b64":"Z/tNwt6oy16jIi8yOaIqqlZ0A4p7QHjqPWOqOFyZ2xCE1gmUjqWEcOwkRMCsgzcJzHa73g0DH/cBu6tBEpAZDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"32a30b153038db7856a48e470b2f55c326e4a8429eb5d78bf726210213d5ea2c","last_reissued_at":"2026-07-05T10:20:56.967914Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:20:56.967914Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2502.20022","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":"2026-07-05T10:20:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IHrbkwSojAojqNuod8Ph7UgLUyuSJRDChPnS/mI+0sfnDOcXve0FI7Yvxeivwmkf8fUUivG/NYsjKUYlJlWPCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T08:04:36.885917Z"},"content_sha256":"9407580dcccecb59a806de70c9a05c5ee176b6c5cf3238cc7996602142d90b38","schema_version":"1.0","event_id":"sha256:9407580dcccecb59a806de70c9a05c5ee176b6c5cf3238cc7996602142d90b38"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:GKRQWFJQHDNXQVVERZDQWL2VYM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamic Energy Flow Analysis of Integrated Electricity and Gas Systems: A Semi-Analytical Approach","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","headline":"","cross_cats":["cs.SY"],"primary_cat":"eess.SY","authors_text":"Ruizhi Yu, Shuai Lu, Suhan Zhang, Wei Gu, Yijun Xu, Yuan Li, Zhikai Huang","submitted_at":"2025-02-27T12:01:07Z","abstract_excerpt":"Ensuring the safe and reliable operation of integrated electricity and gas systems (IEGS) requires dynamic energy flow (DEF) simulation tools that achieve high accuracy and computational efficiency. However, the inherent strong nonlinearity of gas dynamics and its bidirectional coupling with power grids impose significant challenges on conventional numerical algorithms, particularly in computational efficiency and accuracy. Considering this, we propose a novel non-iterative semi-analytical algorithm based on differential transformation (DT) for DEF simulation of IEGS. First, we introduce a sem"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.20022","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2502.20022/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":"2026-07-05T10:20:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TdSB/9KyQzZ9KZFwf94k6g23mfrYngH48lFeyP6QWmOR8gb7pQq3BugSez3c1Um2I5LpRBIsDe4EyyVW+uNOAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-20T08:04:36.886477Z"},"content_sha256":"31da9c1ccc3432d6af3301f8f3797e95c3da29d3785b145a2863dbf86da1c6c7","schema_version":"1.0","event_id":"sha256:31da9c1ccc3432d6af3301f8f3797e95c3da29d3785b145a2863dbf86da1c6c7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GKRQWFJQHDNXQVVERZDQWL2VYM/bundle.json","state_url":"https://pith.science/pith/GKRQWFJQHDNXQVVERZDQWL2VYM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GKRQWFJQHDNXQVVERZDQWL2VYM/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":"2026-08-20T08:04:36Z","links":{"resolver":"https://pith.science/pith/GKRQWFJQHDNXQVVERZDQWL2VYM","bundle":"https://pith.science/pith/GKRQWFJQHDNXQVVERZDQWL2VYM/bundle.json","state":"https://pith.science/pith/GKRQWFJQHDNXQVVERZDQWL2VYM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GKRQWFJQHDNXQVVERZDQWL2VYM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:GKRQWFJQHDNXQVVERZDQWL2VYM","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":"1d6972cb443a95808b72402dd096aecf1ae4179d99efd59c6f9ed0f566852e8a","cross_cats_sorted":["cs.SY"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2025-02-27T12:01:07Z","title_canon_sha256":"e576679dc5c928418eabb32d0931f8f00adc54167b33539940ecf326c191a6b5"},"schema_version":"1.0","source":{"id":"2502.20022","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2502.20022","created_at":"2026-07-05T10:20:56Z"},{"alias_kind":"arxiv_version","alias_value":"2502.20022v1","created_at":"2026-07-05T10:20:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2502.20022","created_at":"2026-07-05T10:20:56Z"},{"alias_kind":"pith_short_12","alias_value":"GKRQWFJQHDNX","created_at":"2026-07-05T10:20:56Z"},{"alias_kind":"pith_short_16","alias_value":"GKRQWFJQHDNXQVVE","created_at":"2026-07-05T10:20:56Z"},{"alias_kind":"pith_short_8","alias_value":"GKRQWFJQ","created_at":"2026-07-05T10:20:56Z"}],"graph_snapshots":[{"event_id":"sha256:31da9c1ccc3432d6af3301f8f3797e95c3da29d3785b145a2863dbf86da1c6c7","target":"graph","created_at":"2026-07-05T10:20:56Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2502.20022/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Ensuring the safe and reliable operation of integrated electricity and gas systems (IEGS) requires dynamic energy flow (DEF) simulation tools that achieve high accuracy and computational efficiency. However, the inherent strong nonlinearity of gas dynamics and its bidirectional coupling with power grids impose significant challenges on conventional numerical algorithms, particularly in computational efficiency and accuracy. Considering this, we propose a novel non-iterative semi-analytical algorithm based on differential transformation (DT) for DEF simulation of IEGS. First, we introduce a sem","authors_text":"Ruizhi Yu, Shuai Lu, Suhan Zhang, Wei Gu, Yijun Xu, Yuan Li, Zhikai Huang","cross_cats":["cs.SY"],"headline":"","license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2025-02-27T12:01:07Z","title":"Dynamic Energy Flow Analysis of Integrated Electricity and Gas Systems: A Semi-Analytical Approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2502.20022","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":"sha256:9407580dcccecb59a806de70c9a05c5ee176b6c5cf3238cc7996602142d90b38","target":"record","created_at":"2026-07-05T10:20:56Z","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":"1d6972cb443a95808b72402dd096aecf1ae4179d99efd59c6f9ed0f566852e8a","cross_cats_sorted":["cs.SY"],"license":"http://creativecommons.org/licenses/by-nc-nd/4.0/","primary_cat":"eess.SY","submitted_at":"2025-02-27T12:01:07Z","title_canon_sha256":"e576679dc5c928418eabb32d0931f8f00adc54167b33539940ecf326c191a6b5"},"schema_version":"1.0","source":{"id":"2502.20022","kind":"arxiv","version":1}},"canonical_sha256":"32a30b153038db7856a48e470b2f55c326e4a8429eb5d78bf726210213d5ea2c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"32a30b153038db7856a48e470b2f55c326e4a8429eb5d78bf726210213d5ea2c","first_computed_at":"2026-07-05T10:20:56.967914Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T10:20:56.967914Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Z/tNwt6oy16jIi8yOaIqqlZ0A4p7QHjqPWOqOFyZ2xCE1gmUjqWEcOwkRMCsgzcJzHa73g0DH/cBu6tBEpAZDw==","signature_status":"signed_v1","signed_at":"2026-07-05T10:20:56.968436Z","signed_message":"canonical_sha256_bytes"},"source_id":"2502.20022","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9407580dcccecb59a806de70c9a05c5ee176b6c5cf3238cc7996602142d90b38","sha256:31da9c1ccc3432d6af3301f8f3797e95c3da29d3785b145a2863dbf86da1c6c7"],"state_sha256":"6f1242d96c1947d20e1822837ec852866a17b6435ffa98499bedb9db1b0f8bd6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Vhu1nwefMY8zwbtKz501k8heCHi0mlEhjB7Wh7/hWw0NIS3zuHMrbQrTOeb/djakcsNXJCGMlFheW5ujrTUgCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-20T08:04:36.891402Z","bundle_sha256":"516d82e66c51f9d31366d712521d03e3becf420746d4a7f6c9486dfb85ae67f5"}}