{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:Q6KONIK6OG74EQIHUEINQHVL4U","short_pith_number":"pith:Q6KONIK6","canonical_record":{"source":{"id":"1511.01297","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2015-11-04T11:27:54Z","cross_cats_sorted":[],"title_canon_sha256":"19bf6551dce5123baf0bb85e2416a1c8ecb74a6c34500bc6ee06d4a544c230f9","abstract_canon_sha256":"b21d6b8b8a0c3ea7adceffd79144a61a5ce2ae19ccc50fd909aad4447ab27419"},"schema_version":"1.0"},"canonical_sha256":"8794e6a15e71bfc24107a110d81eabe5235301c000028cbdca5f3172cc6ba081","source":{"kind":"arxiv","id":"1511.01297","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.01297","created_at":"2026-05-18T01:27:47Z"},{"alias_kind":"arxiv_version","alias_value":"1511.01297v1","created_at":"2026-05-18T01:27:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.01297","created_at":"2026-05-18T01:27:47Z"},{"alias_kind":"pith_short_12","alias_value":"Q6KONIK6OG74","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q6KONIK6OG74EQIH","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q6KONIK6","created_at":"2026-05-18T12:29:37Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:Q6KONIK6OG74EQIHUEINQHVL4U","target":"record","payload":{"canonical_record":{"source":{"id":"1511.01297","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2015-11-04T11:27:54Z","cross_cats_sorted":[],"title_canon_sha256":"19bf6551dce5123baf0bb85e2416a1c8ecb74a6c34500bc6ee06d4a544c230f9","abstract_canon_sha256":"b21d6b8b8a0c3ea7adceffd79144a61a5ce2ae19ccc50fd909aad4447ab27419"},"schema_version":"1.0"},"canonical_sha256":"8794e6a15e71bfc24107a110d81eabe5235301c000028cbdca5f3172cc6ba081","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:27:47.539447Z","signature_b64":"qEp9EKYTRtFU2HPYnhlxN+/Jolrpc0mrHfGtAL/F9Iod1tRSLgcOk54fDpN1qU/4xp+54QPrzutRzkNzTQjOCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8794e6a15e71bfc24107a110d81eabe5235301c000028cbdca5f3172cc6ba081","last_reissued_at":"2026-05-18T01:27:47.538791Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:27:47.538791Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1511.01297","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":"2026-05-18T01:27:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"t8sRDtuzkBZAr6sGi0g3GvGykPM+M0RiQrYsqwFt4m165HBTpOGNi8p5rf6fGWvfrzxIC6ce9XIQwng4XKEOAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T20:46:40.963904Z"},"content_sha256":"025a76463fa1ef414a68cbfb8fbf6e36ad37e3ddae6579d56e7bff8f8a7a151c","schema_version":"1.0","event_id":"sha256:025a76463fa1ef414a68cbfb8fbf6e36ad37e3ddae6579d56e7bff8f8a7a151c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:Q6KONIK6OG74EQIHUEINQHVL4U","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fully Distributed Adaptive Output Feedback Protocols for Linear Multi-Agent Systems with Directed Graphs: A Sequential Observer Design Approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cs.SY","authors_text":"Jie Chen, Yuezu Lv, Zhisheng Duan, Zhongkui Li","submitted_at":"2015-11-04T11:27:54Z","abstract_excerpt":"This paper studies output feedback consensus protocol design problems for linear multi-agent systems with directed graphs. We consider both leaderless and leader-follower consensus with a leader whose control input is nonzero and bounded. We propose a novel sequential observer design approach, which makes it possible to design fully distributed adaptive output feedback protocols that the existing methods fail to accomplish. With the sequential observer architecture, we show that leaderless consensus can be achieved for any strongly connected directed graph in a fully distributed manner, whenev"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.01297","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":"2026-05-18T01:27:47Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5tiN1Lh2G8YlqmyEamvWi/Ilkk+zZsv7fOtmJVrGmxIwksugAsTDKY4XbEaxgu8RKOH+UGzJgOGVEHZEKua/Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-29T20:46:40.964601Z"},"content_sha256":"58c4b4e9c360a139a846daccc05cd00d5882bd65fbfe9e204ed99478ec71180e","schema_version":"1.0","event_id":"sha256:58c4b4e9c360a139a846daccc05cd00d5882bd65fbfe9e204ed99478ec71180e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/Q6KONIK6OG74EQIHUEINQHVL4U/bundle.json","state_url":"https://pith.science/pith/Q6KONIK6OG74EQIHUEINQHVL4U/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/Q6KONIK6OG74EQIHUEINQHVL4U/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":"2026-05-29T20:46:40Z","links":{"resolver":"https://pith.science/pith/Q6KONIK6OG74EQIHUEINQHVL4U","bundle":"https://pith.science/pith/Q6KONIK6OG74EQIHUEINQHVL4U/bundle.json","state":"https://pith.science/pith/Q6KONIK6OG74EQIHUEINQHVL4U/state.json","well_known_bundle":"https://pith.science/.well-known/pith/Q6KONIK6OG74EQIHUEINQHVL4U/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:Q6KONIK6OG74EQIHUEINQHVL4U","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":"b21d6b8b8a0c3ea7adceffd79144a61a5ce2ae19ccc50fd909aad4447ab27419","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2015-11-04T11:27:54Z","title_canon_sha256":"19bf6551dce5123baf0bb85e2416a1c8ecb74a6c34500bc6ee06d4a544c230f9"},"schema_version":"1.0","source":{"id":"1511.01297","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.01297","created_at":"2026-05-18T01:27:47Z"},{"alias_kind":"arxiv_version","alias_value":"1511.01297v1","created_at":"2026-05-18T01:27:47Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.01297","created_at":"2026-05-18T01:27:47Z"},{"alias_kind":"pith_short_12","alias_value":"Q6KONIK6OG74","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"Q6KONIK6OG74EQIH","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"Q6KONIK6","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:58c4b4e9c360a139a846daccc05cd00d5882bd65fbfe9e204ed99478ec71180e","target":"graph","created_at":"2026-05-18T01:27:47Z","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 output feedback consensus protocol design problems for linear multi-agent systems with directed graphs. We consider both leaderless and leader-follower consensus with a leader whose control input is nonzero and bounded. We propose a novel sequential observer design approach, which makes it possible to design fully distributed adaptive output feedback protocols that the existing methods fail to accomplish. With the sequential observer architecture, we show that leaderless consensus can be achieved for any strongly connected directed graph in a fully distributed manner, whenev","authors_text":"Jie Chen, Yuezu Lv, Zhisheng Duan, Zhongkui Li","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2015-11-04T11:27:54Z","title":"Fully Distributed Adaptive Output Feedback Protocols for Linear Multi-Agent Systems with Directed Graphs: A Sequential Observer Design Approach"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.01297","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":"sha256:025a76463fa1ef414a68cbfb8fbf6e36ad37e3ddae6579d56e7bff8f8a7a151c","target":"record","created_at":"2026-05-18T01:27:47Z","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":"b21d6b8b8a0c3ea7adceffd79144a61a5ce2ae19ccc50fd909aad4447ab27419","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.SY","submitted_at":"2015-11-04T11:27:54Z","title_canon_sha256":"19bf6551dce5123baf0bb85e2416a1c8ecb74a6c34500bc6ee06d4a544c230f9"},"schema_version":"1.0","source":{"id":"1511.01297","kind":"arxiv","version":1}},"canonical_sha256":"8794e6a15e71bfc24107a110d81eabe5235301c000028cbdca5f3172cc6ba081","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8794e6a15e71bfc24107a110d81eabe5235301c000028cbdca5f3172cc6ba081","first_computed_at":"2026-05-18T01:27:47.538791Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:47.538791Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qEp9EKYTRtFU2HPYnhlxN+/Jolrpc0mrHfGtAL/F9Iod1tRSLgcOk54fDpN1qU/4xp+54QPrzutRzkNzTQjOCg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:47.539447Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.01297","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:025a76463fa1ef414a68cbfb8fbf6e36ad37e3ddae6579d56e7bff8f8a7a151c","sha256:58c4b4e9c360a139a846daccc05cd00d5882bd65fbfe9e204ed99478ec71180e"],"state_sha256":"b0099ec6f933abaf4890149674ac37ecd1743522bd4730c2132fb7177b0b1ebf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"CdBWirDe3KhzWCzz12R/Wwqj9hhQrTlABRZGYtasZbcHCYLgLpOsdYEf7LGkY24+XZer8t2ohn13dBznPlU7CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-29T20:46:40.968223Z","bundle_sha256":"61eae3c3c3a043b00b2a50a91b7943a308694f0b5a77e5d239deb2170f39dc49"}}