{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:XBZ7U7JXNDSC7IHTOAA5FOIXEE","short_pith_number":"pith:XBZ7U7JX","canonical_record":{"source":{"id":"2003.09252","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2020-03-19T15:06:14Z","cross_cats_sorted":["cs.SY","math.OC"],"title_canon_sha256":"a3c768959d99abbe890f72bf66a1c58115e6c328caee6d531fbe8100efc1a2d7","abstract_canon_sha256":"bba063ebfb5a274d09ed5cb7b664f4418fdf3190c4bb6158623f0093ce764480"},"schema_version":"1.0"},"canonical_sha256":"b873fa7d3768e42fa0f37001d2b9172128bb9c3364300c3f3410fe6926c471f2","source":{"kind":"arxiv","id":"2003.09252","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.09252","created_at":"2026-07-05T00:49:30Z"},{"alias_kind":"arxiv_version","alias_value":"2003.09252v1","created_at":"2026-07-05T00:49:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.09252","created_at":"2026-07-05T00:49:30Z"},{"alias_kind":"pith_short_12","alias_value":"XBZ7U7JXNDSC","created_at":"2026-07-05T00:49:30Z"},{"alias_kind":"pith_short_16","alias_value":"XBZ7U7JXNDSC7IHT","created_at":"2026-07-05T00:49:30Z"},{"alias_kind":"pith_short_8","alias_value":"XBZ7U7JX","created_at":"2026-07-05T00:49:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:XBZ7U7JXNDSC7IHTOAA5FOIXEE","target":"record","payload":{"canonical_record":{"source":{"id":"2003.09252","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2020-03-19T15:06:14Z","cross_cats_sorted":["cs.SY","math.OC"],"title_canon_sha256":"a3c768959d99abbe890f72bf66a1c58115e6c328caee6d531fbe8100efc1a2d7","abstract_canon_sha256":"bba063ebfb5a274d09ed5cb7b664f4418fdf3190c4bb6158623f0093ce764480"},"schema_version":"1.0"},"canonical_sha256":"b873fa7d3768e42fa0f37001d2b9172128bb9c3364300c3f3410fe6926c471f2","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T00:49:30.675944Z","signature_b64":"Mc3LlCGfRrx8fhC1s7iT+i6XZj+eC2nvp4KLqI84MQ8Oq2FpQMZ4X2kiooDcLoyqJJxUzSO15tVfDDOVpO4LDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b873fa7d3768e42fa0f37001d2b9172128bb9c3364300c3f3410fe6926c471f2","last_reissued_at":"2026-07-05T00:49:30.675544Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T00:49:30.675544Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2003.09252","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":"2026-07-05T00:49:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yYmO9GSUydb6xMIEYeP059aW4/uXKtDxKtgIQ5WE7qzjKW1Ycp2SHcies+d7knPaxT4fAafehggpTR+B2jFzBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T01:36:46.451655Z"},"content_sha256":"2f656829f277ebddb9173b5df02f58403cdc555b047a04632d3667b87d75684a","schema_version":"1.0","event_id":"sha256:2f656829f277ebddb9173b5df02f58403cdc555b047a04632d3667b87d75684a"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:XBZ7U7JXNDSC7IHTOAA5FOIXEE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fixed-order H-infinity control for interconnected systems using delay differential algebraic equations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.SY","math.OC"],"primary_cat":"eess.SY","authors_text":"Suat Gumussoy, Wim Michiels","submitted_at":"2020-03-19T15:06:14Z","abstract_excerpt":"We analyze and design H-infinity controllers for general time-delay systems with time-delays in systems' state, inputs and outputs. We allow the designer to choose the order of the controller and to introduce constant time-delays in the controller. The closed-loop system of the plant and the controller is modeled by a system of delay differential algebraic equations (DDAEs). The advantage of the DDAE modeling framework is that any interconnection of systems and controllers prone to various types of delays can be dealt with in a systematic way, without using any elimination technique. We presen"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.09252","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/2003.09252/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":"2026-07-05T00:49:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AX3RQCySUWZkEwcZ2x+mA6MinuRLu0dtnHEDn/uepmqKczjEQWpHUpWJxvC7GPeusjmI6oKXINxE0Tq2r4XRDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-17T01:36:46.452034Z"},"content_sha256":"dc3880e7ee9dc1c30a10d84d0bb453b120919f651da4342b9a6dcda612976fdb","schema_version":"1.0","event_id":"sha256:dc3880e7ee9dc1c30a10d84d0bb453b120919f651da4342b9a6dcda612976fdb"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XBZ7U7JXNDSC7IHTOAA5FOIXEE/bundle.json","state_url":"https://pith.science/pith/XBZ7U7JXNDSC7IHTOAA5FOIXEE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XBZ7U7JXNDSC7IHTOAA5FOIXEE/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":"2026-07-17T01:36:46Z","links":{"resolver":"https://pith.science/pith/XBZ7U7JXNDSC7IHTOAA5FOIXEE","bundle":"https://pith.science/pith/XBZ7U7JXNDSC7IHTOAA5FOIXEE/bundle.json","state":"https://pith.science/pith/XBZ7U7JXNDSC7IHTOAA5FOIXEE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XBZ7U7JXNDSC7IHTOAA5FOIXEE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:XBZ7U7JXNDSC7IHTOAA5FOIXEE","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":"bba063ebfb5a274d09ed5cb7b664f4418fdf3190c4bb6158623f0093ce764480","cross_cats_sorted":["cs.SY","math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2020-03-19T15:06:14Z","title_canon_sha256":"a3c768959d99abbe890f72bf66a1c58115e6c328caee6d531fbe8100efc1a2d7"},"schema_version":"1.0","source":{"id":"2003.09252","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2003.09252","created_at":"2026-07-05T00:49:30Z"},{"alias_kind":"arxiv_version","alias_value":"2003.09252v1","created_at":"2026-07-05T00:49:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2003.09252","created_at":"2026-07-05T00:49:30Z"},{"alias_kind":"pith_short_12","alias_value":"XBZ7U7JXNDSC","created_at":"2026-07-05T00:49:30Z"},{"alias_kind":"pith_short_16","alias_value":"XBZ7U7JXNDSC7IHT","created_at":"2026-07-05T00:49:30Z"},{"alias_kind":"pith_short_8","alias_value":"XBZ7U7JX","created_at":"2026-07-05T00:49:30Z"}],"graph_snapshots":[{"event_id":"sha256:dc3880e7ee9dc1c30a10d84d0bb453b120919f651da4342b9a6dcda612976fdb","target":"graph","created_at":"2026-07-05T00:49:30Z","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/2003.09252/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We analyze and design H-infinity controllers for general time-delay systems with time-delays in systems' state, inputs and outputs. We allow the designer to choose the order of the controller and to introduce constant time-delays in the controller. The closed-loop system of the plant and the controller is modeled by a system of delay differential algebraic equations (DDAEs). The advantage of the DDAE modeling framework is that any interconnection of systems and controllers prone to various types of delays can be dealt with in a systematic way, without using any elimination technique. We presen","authors_text":"Suat Gumussoy, Wim Michiels","cross_cats":["cs.SY","math.OC"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2020-03-19T15:06:14Z","title":"Fixed-order H-infinity control for interconnected systems using delay differential algebraic equations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2003.09252","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":"sha256:2f656829f277ebddb9173b5df02f58403cdc555b047a04632d3667b87d75684a","target":"record","created_at":"2026-07-05T00:49:30Z","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":"bba063ebfb5a274d09ed5cb7b664f4418fdf3190c4bb6158623f0093ce764480","cross_cats_sorted":["cs.SY","math.OC"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"eess.SY","submitted_at":"2020-03-19T15:06:14Z","title_canon_sha256":"a3c768959d99abbe890f72bf66a1c58115e6c328caee6d531fbe8100efc1a2d7"},"schema_version":"1.0","source":{"id":"2003.09252","kind":"arxiv","version":1}},"canonical_sha256":"b873fa7d3768e42fa0f37001d2b9172128bb9c3364300c3f3410fe6926c471f2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b873fa7d3768e42fa0f37001d2b9172128bb9c3364300c3f3410fe6926c471f2","first_computed_at":"2026-07-05T00:49:30.675544Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T00:49:30.675544Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Mc3LlCGfRrx8fhC1s7iT+i6XZj+eC2nvp4KLqI84MQ8Oq2FpQMZ4X2kiooDcLoyqJJxUzSO15tVfDDOVpO4LDQ==","signature_status":"signed_v1","signed_at":"2026-07-05T00:49:30.675944Z","signed_message":"canonical_sha256_bytes"},"source_id":"2003.09252","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2f656829f277ebddb9173b5df02f58403cdc555b047a04632d3667b87d75684a","sha256:dc3880e7ee9dc1c30a10d84d0bb453b120919f651da4342b9a6dcda612976fdb"],"state_sha256":"fbb8d8ae2fe0ddd166584d3f25ed9d1dc61de54782532016ff8caa63a606dedd"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"dXFDMlJdAzsBIDPjgzr44rRfTaGFvyRZaiXv6MdNJYRU5guTG7/kqRKSmRR7hSDBUJQ5FDi46alI50EJDznRAw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-17T01:36:46.454196Z","bundle_sha256":"542fb8b495da8bda488c57101ea3d5c3d39b5f4094fe0b4d17967a3359d48d90"}}