{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:76A77ZO5L4ATLWBO66MXVAG43E","short_pith_number":"pith:76A77ZO5","canonical_record":{"source":{"id":"1308.3364","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-08-15T11:41:05Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"dc43ee72d1f4c3148a83d2f330e5871ee5ab362643e921348439c6ba00093918","abstract_canon_sha256":"b00d4302076cab2fa483a42d320166cc519487c98180968f6fe765e3ec015f58"},"schema_version":"1.0"},"canonical_sha256":"ff81ffe5dd5f0135d82ef7997a80dcd930fa7a83bf6715af4cc28725d0a490fd","source":{"kind":"arxiv","id":"1308.3364","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.3364","created_at":"2026-05-18T01:48:15Z"},{"alias_kind":"arxiv_version","alias_value":"1308.3364v1","created_at":"2026-05-18T01:48:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.3364","created_at":"2026-05-18T01:48:15Z"},{"alias_kind":"pith_short_12","alias_value":"76A77ZO5L4AT","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"76A77ZO5L4ATLWBO","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"76A77ZO5","created_at":"2026-05-18T12:27:36Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:76A77ZO5L4ATLWBO66MXVAG43E","target":"record","payload":{"canonical_record":{"source":{"id":"1308.3364","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-08-15T11:41:05Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"dc43ee72d1f4c3148a83d2f330e5871ee5ab362643e921348439c6ba00093918","abstract_canon_sha256":"b00d4302076cab2fa483a42d320166cc519487c98180968f6fe765e3ec015f58"},"schema_version":"1.0"},"canonical_sha256":"ff81ffe5dd5f0135d82ef7997a80dcd930fa7a83bf6715af4cc28725d0a490fd","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:48:15.259238Z","signature_b64":"OhUZZP+IlqZXioRncGqO+PZ/vQCc80yGhUgk2M3wQwnMYdYozirMOLOsgmQHu0YEuulQEC0j0plDyFxkP6R0Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ff81ffe5dd5f0135d82ef7997a80dcd930fa7a83bf6715af4cc28725d0a490fd","last_reissued_at":"2026-05-18T01:48:15.258851Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:48:15.258851Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1308.3364","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":"2026-05-18T01:48:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sHZLnh2/opcu/sOLrLjyLADpfA6cjoE05NfWnMGs/K0RaMmcIznn61sTJnZ95gqnm46a96x6SWvwa9joBrvgBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T08:33:09.047119Z"},"content_sha256":"261ca9b30d5fe6f715cf2e8b18a6f5844b2caff3553526a1844ffff5596060ae","schema_version":"1.0","event_id":"sha256:261ca9b30d5fe6f715cf2e8b18a6f5844b2caff3553526a1844ffff5596060ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:76A77ZO5L4ATLWBO66MXVAG43E","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Dynamics of defects in active nematics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"cond-mat.soft","authors_text":"L. M. Pismen","submitted_at":"2013-08-15T11:41:05Z","abstract_excerpt":"Defect dynamics in a thin active nematic layer is studied by asymptotic matching of solutions in the defect core and the far field. The analysis is facilitated by the correspondence between the 2D nematic and complex scalar field models. Self-propulsion and topological interactions are identified as the primary drivers of the defect motion, surpassing the influence of both passive backflow and active flow induced by other defects."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.3364","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":"2026-05-18T01:48:15Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"8R73NuKVtBFmFRChlmh42kZc2/P3/yyC2dZ3INGjg5QuGUF7Hop96KC4sHef2aUxzfBv1SUM1gbOHUEwtFilAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-04T08:33:09.047668Z"},"content_sha256":"0728244ab897cdf2c4868f7f25ba167ff04b1096d04094170a15787a5cad5f30","schema_version":"1.0","event_id":"sha256:0728244ab897cdf2c4868f7f25ba167ff04b1096d04094170a15787a5cad5f30"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/76A77ZO5L4ATLWBO66MXVAG43E/bundle.json","state_url":"https://pith.science/pith/76A77ZO5L4ATLWBO66MXVAG43E/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/76A77ZO5L4ATLWBO66MXVAG43E/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":"2026-06-04T08:33:09Z","links":{"resolver":"https://pith.science/pith/76A77ZO5L4ATLWBO66MXVAG43E","bundle":"https://pith.science/pith/76A77ZO5L4ATLWBO66MXVAG43E/bundle.json","state":"https://pith.science/pith/76A77ZO5L4ATLWBO66MXVAG43E/state.json","well_known_bundle":"https://pith.science/.well-known/pith/76A77ZO5L4ATLWBO66MXVAG43E/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:76A77ZO5L4ATLWBO66MXVAG43E","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":"b00d4302076cab2fa483a42d320166cc519487c98180968f6fe765e3ec015f58","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-08-15T11:41:05Z","title_canon_sha256":"dc43ee72d1f4c3148a83d2f330e5871ee5ab362643e921348439c6ba00093918"},"schema_version":"1.0","source":{"id":"1308.3364","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1308.3364","created_at":"2026-05-18T01:48:15Z"},{"alias_kind":"arxiv_version","alias_value":"1308.3364v1","created_at":"2026-05-18T01:48:15Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1308.3364","created_at":"2026-05-18T01:48:15Z"},{"alias_kind":"pith_short_12","alias_value":"76A77ZO5L4AT","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_16","alias_value":"76A77ZO5L4ATLWBO","created_at":"2026-05-18T12:27:36Z"},{"alias_kind":"pith_short_8","alias_value":"76A77ZO5","created_at":"2026-05-18T12:27:36Z"}],"graph_snapshots":[{"event_id":"sha256:0728244ab897cdf2c4868f7f25ba167ff04b1096d04094170a15787a5cad5f30","target":"graph","created_at":"2026-05-18T01:48:15Z","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":"Defect dynamics in a thin active nematic layer is studied by asymptotic matching of solutions in the defect core and the far field. The analysis is facilitated by the correspondence between the 2D nematic and complex scalar field models. Self-propulsion and topological interactions are identified as the primary drivers of the defect motion, surpassing the influence of both passive backflow and active flow induced by other defects.","authors_text":"L. M. Pismen","cross_cats":["physics.bio-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-08-15T11:41:05Z","title":"Dynamics of defects in active nematics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1308.3364","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":"sha256:261ca9b30d5fe6f715cf2e8b18a6f5844b2caff3553526a1844ffff5596060ae","target":"record","created_at":"2026-05-18T01:48:15Z","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":"b00d4302076cab2fa483a42d320166cc519487c98180968f6fe765e3ec015f58","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-08-15T11:41:05Z","title_canon_sha256":"dc43ee72d1f4c3148a83d2f330e5871ee5ab362643e921348439c6ba00093918"},"schema_version":"1.0","source":{"id":"1308.3364","kind":"arxiv","version":1}},"canonical_sha256":"ff81ffe5dd5f0135d82ef7997a80dcd930fa7a83bf6715af4cc28725d0a490fd","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ff81ffe5dd5f0135d82ef7997a80dcd930fa7a83bf6715af4cc28725d0a490fd","first_computed_at":"2026-05-18T01:48:15.258851Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:48:15.258851Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"OhUZZP+IlqZXioRncGqO+PZ/vQCc80yGhUgk2M3wQwnMYdYozirMOLOsgmQHu0YEuulQEC0j0plDyFxkP6R0Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:48:15.259238Z","signed_message":"canonical_sha256_bytes"},"source_id":"1308.3364","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:261ca9b30d5fe6f715cf2e8b18a6f5844b2caff3553526a1844ffff5596060ae","sha256:0728244ab897cdf2c4868f7f25ba167ff04b1096d04094170a15787a5cad5f30"],"state_sha256":"fef489d9d4f2c6a570aa1c20524eefa0a903d846d515b2056ca575d964fa653a"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4Q9QqrJqlXmhRU7c7qD3X9IQnGnHfmrOwluYsQ706PwBvL9CUZ+ybtN6MKtb1rr2yiXI/6pWCVtJoroMEv6oDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-04T08:33:09.050351Z","bundle_sha256":"3fd32b5746dafe195a712b1a19e678b169a641691c86d5b6ac672db60303923c"}}