{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:AICENLRI4ANSZG72BLRMMI5OJA","short_pith_number":"pith:AICENLRI","canonical_record":{"source":{"id":"1904.00124","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2019-03-30T00:13:42Z","cross_cats_sorted":["cs.SY","math.DS"],"title_canon_sha256":"3d74fdd2359479a34db64ad99f5ba869977b819a5f0d468cdba9a8be934826ba","abstract_canon_sha256":"438d3300746563300d9413313df372084a611c8350dd62ca3a0ed674d8c70455"},"schema_version":"1.0"},"canonical_sha256":"020446ae28e01b2c9bfa0ae2c623ae482fbddde1383081165a198ddc7f797c8d","source":{"kind":"arxiv","id":"1904.00124","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.00124","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"arxiv_version","alias_value":"1904.00124v1","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.00124","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"pith_short_12","alias_value":"AICENLRI4ANS","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"AICENLRI4ANSZG72","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"AICENLRI","created_at":"2026-05-18T12:33:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:AICENLRI4ANSZG72BLRMMI5OJA","target":"record","payload":{"canonical_record":{"source":{"id":"1904.00124","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2019-03-30T00:13:42Z","cross_cats_sorted":["cs.SY","math.DS"],"title_canon_sha256":"3d74fdd2359479a34db64ad99f5ba869977b819a5f0d468cdba9a8be934826ba","abstract_canon_sha256":"438d3300746563300d9413313df372084a611c8350dd62ca3a0ed674d8c70455"},"schema_version":"1.0"},"canonical_sha256":"020446ae28e01b2c9bfa0ae2c623ae482fbddde1383081165a198ddc7f797c8d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:49:49.374704Z","signature_b64":"3+M7s4E8XtTg/HBYYajg9aVLdYwU/Hg0EzVTpTf9++MJ/a9xu+lOUF46/1vbW01+r2lZZZw63+9B88lxm2EeBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"020446ae28e01b2c9bfa0ae2c623ae482fbddde1383081165a198ddc7f797c8d","last_reissued_at":"2026-05-17T23:49:49.374086Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:49:49.374086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.00124","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":"2026-05-17T23:49:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"i+f3PhtTIzcIURHahIrWDgC4t1/75u0C3isidJfYVKaxe4j+3WDNmqc9p9XG5M9KRi4cw3IaLiriTMOlqZpkCA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T15:28:46.038134Z"},"content_sha256":"1979252f9bbaca0988acd0762fdb8be1907214db5cf3660f361457d9e8ecbef9","schema_version":"1.0","event_id":"sha256:1979252f9bbaca0988acd0762fdb8be1907214db5cf3660f361457d9e8ecbef9"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:AICENLRI4ANSZG72BLRMMI5OJA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Detectability and Observer Design for Switched Differential Algebraic Equations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SY","math.DS"],"primary_cat":"math.OC","authors_text":"Aneel Tanwani, Stephan Trenn","submitted_at":"2019-03-30T00:13:42Z","abstract_excerpt":"This paper studies detectability for switched linear differential-algebraic equations (DAEs) and its application to the synthesis of observers, which generate asymptotically converging state estimates. Equating detectability to asymptotic stability of zero-output-constrained state trajectories, and building on our work on interval-wise observability, we propose the notion of interval-wise detectability: If the output of the system is constrained to be identically zero over an interval, then the norm of the corresponding state trajectories scales down by a certain factor at the end of that inte"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.00124","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":"2026-05-17T23:49:49Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bu5diTOgI3sy+0tglJlzJ3o8Y1QnRjw8J+IoisUAz5x8jN6p/hFagm7HA5KUM+XXa1R4hFjjlWHqorINUKuNBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T15:28:46.038487Z"},"content_sha256":"c54a3b2e3e2ef23c101316ac889e19509d012238393fc7baee03ba5f4da604ec","schema_version":"1.0","event_id":"sha256:c54a3b2e3e2ef23c101316ac889e19509d012238393fc7baee03ba5f4da604ec"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/AICENLRI4ANSZG72BLRMMI5OJA/bundle.json","state_url":"https://pith.science/pith/AICENLRI4ANSZG72BLRMMI5OJA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/AICENLRI4ANSZG72BLRMMI5OJA/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":"2026-06-27T15:28:46Z","links":{"resolver":"https://pith.science/pith/AICENLRI4ANSZG72BLRMMI5OJA","bundle":"https://pith.science/pith/AICENLRI4ANSZG72BLRMMI5OJA/bundle.json","state":"https://pith.science/pith/AICENLRI4ANSZG72BLRMMI5OJA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/AICENLRI4ANSZG72BLRMMI5OJA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:AICENLRI4ANSZG72BLRMMI5OJA","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":"438d3300746563300d9413313df372084a611c8350dd62ca3a0ed674d8c70455","cross_cats_sorted":["cs.SY","math.DS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2019-03-30T00:13:42Z","title_canon_sha256":"3d74fdd2359479a34db64ad99f5ba869977b819a5f0d468cdba9a8be934826ba"},"schema_version":"1.0","source":{"id":"1904.00124","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.00124","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"arxiv_version","alias_value":"1904.00124v1","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.00124","created_at":"2026-05-17T23:49:49Z"},{"alias_kind":"pith_short_12","alias_value":"AICENLRI4ANS","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_16","alias_value":"AICENLRI4ANSZG72","created_at":"2026-05-18T12:33:12Z"},{"alias_kind":"pith_short_8","alias_value":"AICENLRI","created_at":"2026-05-18T12:33:12Z"}],"graph_snapshots":[{"event_id":"sha256:c54a3b2e3e2ef23c101316ac889e19509d012238393fc7baee03ba5f4da604ec","target":"graph","created_at":"2026-05-17T23:49:49Z","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"},"paper":{"abstract_excerpt":"This paper studies detectability for switched linear differential-algebraic equations (DAEs) and its application to the synthesis of observers, which generate asymptotically converging state estimates. Equating detectability to asymptotic stability of zero-output-constrained state trajectories, and building on our work on interval-wise observability, we propose the notion of interval-wise detectability: If the output of the system is constrained to be identically zero over an interval, then the norm of the corresponding state trajectories scales down by a certain factor at the end of that inte","authors_text":"Aneel Tanwani, Stephan Trenn","cross_cats":["cs.SY","math.DS"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2019-03-30T00:13:42Z","title":"Detectability and Observer Design for Switched Differential Algebraic Equations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.00124","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":"sha256:1979252f9bbaca0988acd0762fdb8be1907214db5cf3660f361457d9e8ecbef9","target":"record","created_at":"2026-05-17T23:49:49Z","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":"438d3300746563300d9413313df372084a611c8350dd62ca3a0ed674d8c70455","cross_cats_sorted":["cs.SY","math.DS"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.OC","submitted_at":"2019-03-30T00:13:42Z","title_canon_sha256":"3d74fdd2359479a34db64ad99f5ba869977b819a5f0d468cdba9a8be934826ba"},"schema_version":"1.0","source":{"id":"1904.00124","kind":"arxiv","version":1}},"canonical_sha256":"020446ae28e01b2c9bfa0ae2c623ae482fbddde1383081165a198ddc7f797c8d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"020446ae28e01b2c9bfa0ae2c623ae482fbddde1383081165a198ddc7f797c8d","first_computed_at":"2026-05-17T23:49:49.374086Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:49:49.374086Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3+M7s4E8XtTg/HBYYajg9aVLdYwU/Hg0EzVTpTf9++MJ/a9xu+lOUF46/1vbW01+r2lZZZw63+9B88lxm2EeBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:49:49.374704Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.00124","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1979252f9bbaca0988acd0762fdb8be1907214db5cf3660f361457d9e8ecbef9","sha256:c54a3b2e3e2ef23c101316ac889e19509d012238393fc7baee03ba5f4da604ec"],"state_sha256":"55faea6fa30517b7eb77a64ec85d2c05f756e2fee9649e71b5c753aba6e5ae80"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"DMI1g92fBxpcJ/C3XNOBP1N8CZ7Kx3wGHL1KfXRLWdfJBBgMhHX+QIMZPNqO4B6R+9cYq03G49Kwasacai61Dw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T15:28:46.040308Z","bundle_sha256":"aa6091f7e6fab3e96a30a74a0260ada86edc4633ec74267a6ab9c167e3fa92d6"}}