{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:QQZPHTBHITHRYFLJ5RO77LORMM","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":"1ab3e3ed43dad36699b9eba1ca0d7ee30a04a50c85f67a4cf6bebedeaee9354a","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2015-08-18T09:23:28Z","title_canon_sha256":"09c11ed1c2b42b0d88b80e12110291ee45bef0fcf14ab47351aa5519264342aa"},"schema_version":"1.0","source":{"id":"1508.04255","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1508.04255","created_at":"2026-05-18T01:18:09Z"},{"alias_kind":"arxiv_version","alias_value":"1508.04255v2","created_at":"2026-05-18T01:18:09Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1508.04255","created_at":"2026-05-18T01:18:09Z"},{"alias_kind":"pith_short_12","alias_value":"QQZPHTBHITHR","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_16","alias_value":"QQZPHTBHITHRYFLJ","created_at":"2026-05-18T12:29:37Z"},{"alias_kind":"pith_short_8","alias_value":"QQZPHTBH","created_at":"2026-05-18T12:29:37Z"}],"graph_snapshots":[{"event_id":"sha256:451e7ec2833e8ed0e1873a2de80b430042169aacefc87266c461bc975108f630","target":"graph","created_at":"2026-05-18T01:18:09Z","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":"We present a lattice Boltzmann study of the hydrodynamics of a fully resolved squirmer, radius R, confined in a slab of fluid between two no-slip walls. We show that the coupling between hydrodynamics and short-range repulsive interactions between the swimmer and the surface can lead to hydrodynamic trapping of both pushers and pullers at the wall, and to hydrodynamic oscillations in the case of a pusher. We further show that a pusher moves significantly faster when close to a surface than in the bulk, whereas a puller undergoes a transition between fast motion and a dynamical standstill accor","authors_text":"Aidan T. Brown, Davide Marenduzzo, Juho S. Lintuvuori, Kevin Stratford","cross_cats":["physics.bio-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2015-08-18T09:23:28Z","title":"Hydrodynamic oscillations and variable swimming speed in squirmers close to repulsive walls"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1508.04255","kind":"arxiv","version":2},"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":"sha256:9f6e3db8da6e7a7c538315c6313b541ded31a9e4f99e9bfa61abd8c834675b86","target":"record","created_at":"2026-05-18T01:18:09Z","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":"1ab3e3ed43dad36699b9eba1ca0d7ee30a04a50c85f67a4cf6bebedeaee9354a","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2015-08-18T09:23:28Z","title_canon_sha256":"09c11ed1c2b42b0d88b80e12110291ee45bef0fcf14ab47351aa5519264342aa"},"schema_version":"1.0","source":{"id":"1508.04255","kind":"arxiv","version":2}},"canonical_sha256":"8432f3cc2744cf1c1569ec5dffadd16339d79a51b3d59c5309761f131004f68f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8432f3cc2744cf1c1569ec5dffadd16339d79a51b3d59c5309761f131004f68f","first_computed_at":"2026-05-18T01:18:09.564611Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:18:09.564611Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ljlruGmQE/U8coAi3S2E8NGi4AfAHEImXBx9BwXMP1rScQllDL5GNbFTkPaBpfVHKeL6g2U4N1uDW81oL+lNAA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:18:09.565143Z","signed_message":"canonical_sha256_bytes"},"source_id":"1508.04255","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9f6e3db8da6e7a7c538315c6313b541ded31a9e4f99e9bfa61abd8c834675b86","sha256:451e7ec2833e8ed0e1873a2de80b430042169aacefc87266c461bc975108f630"],"state_sha256":"04589687763110d6d8899f090c72ed5987fd0c93c5a450de08490ff1ec44d180"}