{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:PUZDCB4TEDJAAHRSZGVGDEE6LQ","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":"be0ef3f8855d320a403d599502c2730602a897048e605b0b77914f9ae72a377e","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2025-10-26T18:49:18Z","title_canon_sha256":"8af0e8344180c8d1421fe62e399fa5b003459282f5e571573f8a1c7171d98aeb"},"schema_version":"1.0","source":{"id":"2510.22790","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2510.22790","created_at":"2026-06-30T01:17:28Z"},{"alias_kind":"arxiv_version","alias_value":"2510.22790v2","created_at":"2026-06-30T01:17:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2510.22790","created_at":"2026-06-30T01:17:28Z"},{"alias_kind":"pith_short_12","alias_value":"PUZDCB4TEDJA","created_at":"2026-06-30T01:17:28Z"},{"alias_kind":"pith_short_16","alias_value":"PUZDCB4TEDJAAHRS","created_at":"2026-06-30T01:17:28Z"},{"alias_kind":"pith_short_8","alias_value":"PUZDCB4T","created_at":"2026-06-30T01:17:28Z"}],"graph_snapshots":[{"event_id":"sha256:84a8d0466f9355ad14fdab8320d2305af52788da42fcb4de779614678972be20","target":"graph","created_at":"2026-06-30T01:17:28Z","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/2510.22790/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present a safety filter to guarantee constraint satisfaction on the rotation angle in the presence of disturbances. An LMI-based framework simultaneously synthesizes a maximal ellipsoidal robust controlled invariant (RCI) set and its associated state-feedback backup control law by solving a single convex semidefinite program, subject to state and input constraints. To extend this framework to nonlinear quaternion attitude dynamics, we derive exact closed-form sector bounds on the quaternion kinematic nonlinearity and analytically embed them into the LMI via the S-procedure. A smooth mixing ","authors_text":"Ali Baniasad, Alireza Sharifi, Reza Pordal","cross_cats":["cs.SY"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2025-10-26T18:49:18Z","title":"Robust Safety Filter Synthesis for Quaternion Attitude Dynamics via LMI-Based Ellipsoidal Invariant Sets"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2510.22790","kind":"arxiv","version":2},"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":"sha256:8d1e9410719896f0b7cbf181e49d037a344ffdfb9838a3a5eebce94efd9e166f","target":"record","created_at":"2026-06-30T01:17:28Z","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":"be0ef3f8855d320a403d599502c2730602a897048e605b0b77914f9ae72a377e","cross_cats_sorted":["cs.SY"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2025-10-26T18:49:18Z","title_canon_sha256":"8af0e8344180c8d1421fe62e399fa5b003459282f5e571573f8a1c7171d98aeb"},"schema_version":"1.0","source":{"id":"2510.22790","kind":"arxiv","version":2}},"canonical_sha256":"7d3231079320d2001e32c9aa61909e5c151687c2768d2deb18f1cd36c6ad2cd9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7d3231079320d2001e32c9aa61909e5c151687c2768d2deb18f1cd36c6ad2cd9","first_computed_at":"2026-06-30T01:17:28.179729Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-30T01:17:28.179729Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xfGRLvWmw6Tivg9CBFr+nyPedsB+30z8Rm1bfgQuE1GQI7KlgVQu1LpKC9wwg8Mn5nXfFOsubNhSpiJe06g5Cg==","signature_status":"signed_v1","signed_at":"2026-06-30T01:17:28.180416Z","signed_message":"canonical_sha256_bytes"},"source_id":"2510.22790","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8d1e9410719896f0b7cbf181e49d037a344ffdfb9838a3a5eebce94efd9e166f","sha256:84a8d0466f9355ad14fdab8320d2305af52788da42fcb4de779614678972be20"],"state_sha256":"9b019ee7ddc39580088357040e905592ccf0f630b3729e08a1b473b6b4ae5e82"}