{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:CK2AUYDX6MVPVKTGYS7QJJUG4Q","short_pith_number":"pith:CK2AUYDX","canonical_record":{"source":{"id":"1709.05301","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-09-15T16:45:53Z","cross_cats_sorted":[],"title_canon_sha256":"272ab16e6b1edd4b4083e3e705ce3f3c8f80137e806c641e2fa084dd545de52f","abstract_canon_sha256":"a0c14c5037ee60b01740c65b296744b5deb4561a3b1269dd93aed7f6ee0b03ac"},"schema_version":"1.0"},"canonical_sha256":"12b40a6077f32afaaa66c4bf04a686e40f5e0d8ec9a5d0f77481cd70ce472636","source":{"kind":"arxiv","id":"1709.05301","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.05301","created_at":"2026-05-18T00:21:25Z"},{"alias_kind":"arxiv_version","alias_value":"1709.05301v1","created_at":"2026-05-18T00:21:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.05301","created_at":"2026-05-18T00:21:25Z"},{"alias_kind":"pith_short_12","alias_value":"CK2AUYDX6MVP","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CK2AUYDX6MVPVKTG","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CK2AUYDX","created_at":"2026-05-18T12:31:10Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:CK2AUYDX6MVPVKTGYS7QJJUG4Q","target":"record","payload":{"canonical_record":{"source":{"id":"1709.05301","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-09-15T16:45:53Z","cross_cats_sorted":[],"title_canon_sha256":"272ab16e6b1edd4b4083e3e705ce3f3c8f80137e806c641e2fa084dd545de52f","abstract_canon_sha256":"a0c14c5037ee60b01740c65b296744b5deb4561a3b1269dd93aed7f6ee0b03ac"},"schema_version":"1.0"},"canonical_sha256":"12b40a6077f32afaaa66c4bf04a686e40f5e0d8ec9a5d0f77481cd70ce472636","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:21:25.266671Z","signature_b64":"iw6Qb+2oI7Q25PzN6pMAAT7eE2VWI3+QQOhthXiM/MgfStmgFe3xBpnvtSs7hso5nRlaTNvln5t3wkBSUQg8AA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"12b40a6077f32afaaa66c4bf04a686e40f5e0d8ec9a5d0f77481cd70ce472636","last_reissued_at":"2026-05-18T00:21:25.265934Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:21:25.265934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1709.05301","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":"2026-05-18T00:21:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/d3H84bBwpzrru4IKysBONAtmWSNDdpkYE3aNYsjVkhxH0IoL/DAg5uWfXwTuT2SGxbxkMuzyXyNqAMdJZO7Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T20:21:28.374357Z"},"content_sha256":"775525b428fe42fbc7c35452b4f4cab17d93987c7e1ca827cdc144bda2c89abf","schema_version":"1.0","event_id":"sha256:775525b428fe42fbc7c35452b4f4cab17d93987c7e1ca827cdc144bda2c89abf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:CK2AUYDX6MVPVKTGYS7QJJUG4Q","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Isogeometric Analysis and Harmonic Stator-Rotor Coupling for Simulating Electric Machines","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.NA","authors_text":"Herbert De Gersem, Jacopo Corno, Sebastian Sch\\\"ops, Zeger Bontinck","submitted_at":"2017-09-15T16:45:53Z","abstract_excerpt":"This work proposes Isogeometric Analysis as an alternative to classical finite elements for simulating electric machines. Through the spline-based Isogeometric discretization it is possible to parametrize the circular arcs exactly, thereby avoiding any geometrical error in the representation of the air gap where a high accuracy is mandatory. To increase the generality of the method, and to allow rotation, the rotor and the stator computational domains are constructed independently as multipatch entities. The two subdomains are then coupled using harmonic basis functions at the interface which "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.05301","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":"2026-05-18T00:21:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZlSlVUIT9qRkOfC0+b2dV4A3Ii+PAxxvTyoJWmp2ldSpKUtbxqOwviCnsjbFdr+8xTdznzjSzWujRiuvsVGMCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T20:21:28.375041Z"},"content_sha256":"6d02a6efab55a7a8e92311047794790bf6b48052a799d1c2804ac0bed60abcf6","schema_version":"1.0","event_id":"sha256:6d02a6efab55a7a8e92311047794790bf6b48052a799d1c2804ac0bed60abcf6"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CK2AUYDX6MVPVKTGYS7QJJUG4Q/bundle.json","state_url":"https://pith.science/pith/CK2AUYDX6MVPVKTGYS7QJJUG4Q/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CK2AUYDX6MVPVKTGYS7QJJUG4Q/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":"2026-06-10T20:21:28Z","links":{"resolver":"https://pith.science/pith/CK2AUYDX6MVPVKTGYS7QJJUG4Q","bundle":"https://pith.science/pith/CK2AUYDX6MVPVKTGYS7QJJUG4Q/bundle.json","state":"https://pith.science/pith/CK2AUYDX6MVPVKTGYS7QJJUG4Q/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CK2AUYDX6MVPVKTGYS7QJJUG4Q/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:CK2AUYDX6MVPVKTGYS7QJJUG4Q","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":"a0c14c5037ee60b01740c65b296744b5deb4561a3b1269dd93aed7f6ee0b03ac","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-09-15T16:45:53Z","title_canon_sha256":"272ab16e6b1edd4b4083e3e705ce3f3c8f80137e806c641e2fa084dd545de52f"},"schema_version":"1.0","source":{"id":"1709.05301","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1709.05301","created_at":"2026-05-18T00:21:25Z"},{"alias_kind":"arxiv_version","alias_value":"1709.05301v1","created_at":"2026-05-18T00:21:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1709.05301","created_at":"2026-05-18T00:21:25Z"},{"alias_kind":"pith_short_12","alias_value":"CK2AUYDX6MVP","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_16","alias_value":"CK2AUYDX6MVPVKTG","created_at":"2026-05-18T12:31:10Z"},{"alias_kind":"pith_short_8","alias_value":"CK2AUYDX","created_at":"2026-05-18T12:31:10Z"}],"graph_snapshots":[{"event_id":"sha256:6d02a6efab55a7a8e92311047794790bf6b48052a799d1c2804ac0bed60abcf6","target":"graph","created_at":"2026-05-18T00:21:25Z","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 proposes Isogeometric Analysis as an alternative to classical finite elements for simulating electric machines. Through the spline-based Isogeometric discretization it is possible to parametrize the circular arcs exactly, thereby avoiding any geometrical error in the representation of the air gap where a high accuracy is mandatory. To increase the generality of the method, and to allow rotation, the rotor and the stator computational domains are constructed independently as multipatch entities. The two subdomains are then coupled using harmonic basis functions at the interface which ","authors_text":"Herbert De Gersem, Jacopo Corno, Sebastian Sch\\\"ops, Zeger Bontinck","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-09-15T16:45:53Z","title":"Isogeometric Analysis and Harmonic Stator-Rotor Coupling for Simulating Electric Machines"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1709.05301","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":"sha256:775525b428fe42fbc7c35452b4f4cab17d93987c7e1ca827cdc144bda2c89abf","target":"record","created_at":"2026-05-18T00:21:25Z","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":"a0c14c5037ee60b01740c65b296744b5deb4561a3b1269dd93aed7f6ee0b03ac","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2017-09-15T16:45:53Z","title_canon_sha256":"272ab16e6b1edd4b4083e3e705ce3f3c8f80137e806c641e2fa084dd545de52f"},"schema_version":"1.0","source":{"id":"1709.05301","kind":"arxiv","version":1}},"canonical_sha256":"12b40a6077f32afaaa66c4bf04a686e40f5e0d8ec9a5d0f77481cd70ce472636","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"12b40a6077f32afaaa66c4bf04a686e40f5e0d8ec9a5d0f77481cd70ce472636","first_computed_at":"2026-05-18T00:21:25.265934Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:21:25.265934Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"iw6Qb+2oI7Q25PzN6pMAAT7eE2VWI3+QQOhthXiM/MgfStmgFe3xBpnvtSs7hso5nRlaTNvln5t3wkBSUQg8AA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:21:25.266671Z","signed_message":"canonical_sha256_bytes"},"source_id":"1709.05301","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:775525b428fe42fbc7c35452b4f4cab17d93987c7e1ca827cdc144bda2c89abf","sha256:6d02a6efab55a7a8e92311047794790bf6b48052a799d1c2804ac0bed60abcf6"],"state_sha256":"f84ec7a710b3bcb364ae393df2d256ba14e7a4b514ef3da8010294355540961e"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"waRY8CnPzOamuh49cAN12QM2DonVfE0I781nWGWgmwyjr4MLipzhvqDl45x4lLLfuVUKccVeE6rWXYPFl+m+Ag==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T20:21:28.378132Z","bundle_sha256":"7a9443aca71c3c9ebf729667416478f2f538a781967774a60df845d1cea21b53"}}