{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:4MTMGDZ5BX6P74KYJLC6SESSI7","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":"0a51357ab1d7b90329bb3803f023845ae40871415443e411970f823b5dca346b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-02-06T12:01:09Z","title_canon_sha256":"ed0b4e79175bca5f662e9d21749d13dec75b099533c15ef92a0babc85b761a6c"},"schema_version":"1.0","source":{"id":"2102.03571","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2102.03571","created_at":"2026-07-05T06:35:41Z"},{"alias_kind":"arxiv_version","alias_value":"2102.03571v3","created_at":"2026-07-05T06:35:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2102.03571","created_at":"2026-07-05T06:35:41Z"},{"alias_kind":"pith_short_12","alias_value":"4MTMGDZ5BX6P","created_at":"2026-07-05T06:35:41Z"},{"alias_kind":"pith_short_16","alias_value":"4MTMGDZ5BX6P74KY","created_at":"2026-07-05T06:35:41Z"},{"alias_kind":"pith_short_8","alias_value":"4MTMGDZ5","created_at":"2026-07-05T06:35:41Z"}],"graph_snapshots":[{"event_id":"sha256:81475a6c96c8cade8caa51df880a0a1f816888c30789068fc5cb6304b464b0fc","target":"graph","created_at":"2026-07-05T06:35:41Z","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/2102.03571/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present new constrained and free-swimming experiments and simulations of a pair of pitching hydrofoils interacting in a minimal school. The hydrofoils have an out-of-phase synchronization and they are varied through in-line, staggered, and side-by-side formations within the two-dimensional interaction plane. It is discovered that there is a \\textit{two-dimensionally} stable equilibrium point for a side-by-side formation. In fact, this formation is super-stable, meaning that hydrodynamic forces will passively maintain this formation even under external perturbations and the school as a whole","authors_text":"Amin Mivehchi, Keith W. Moored, Melike Kurt, Pedro Costa Ormonde","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-02-06T12:01:09Z","title":"Two-dimensionally stable self-organization arises in simple schooling swimmers through hydrodynamic interactions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.03571","kind":"arxiv","version":3},"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":"sha256:17dae6665f94584b8ef35f487fa3d0a73556018f381c4d35632b2f28a0153dcd","target":"record","created_at":"2026-07-05T06:35:41Z","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":"0a51357ab1d7b90329bb3803f023845ae40871415443e411970f823b5dca346b","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.flu-dyn","submitted_at":"2021-02-06T12:01:09Z","title_canon_sha256":"ed0b4e79175bca5f662e9d21749d13dec75b099533c15ef92a0babc85b761a6c"},"schema_version":"1.0","source":{"id":"2102.03571","kind":"arxiv","version":3}},"canonical_sha256":"e326c30f3d0dfcfff1584ac5e9125247e2f54073cbd7d3f033eab70323d7e4d4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e326c30f3d0dfcfff1584ac5e9125247e2f54073cbd7d3f033eab70323d7e4d4","first_computed_at":"2026-07-05T06:35:41.576894Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:35:41.576894Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"2BoLqS7miYeS1H14Py53U1Lb3ks/VhbJbfaA9jCEMHBcnL4Iif8+x/oLl8H2k+rdmdXrvnffQDf33LkJRi6UAA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:35:41.577508Z","signed_message":"canonical_sha256_bytes"},"source_id":"2102.03571","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:17dae6665f94584b8ef35f487fa3d0a73556018f381c4d35632b2f28a0153dcd","sha256:81475a6c96c8cade8caa51df880a0a1f816888c30789068fc5cb6304b464b0fc"],"state_sha256":"05e6b0bd83609d437d3c9837ec750f83f44ba3ef8adcf3fcdcfc3be5194aece9"}