{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2023:XX3BYD5HJ6OYIUTWARD47YBB3E","short_pith_number":"pith:XX3BYD5H","schema_version":"1.0","canonical_sha256":"bdf61c0fa74f9d8452760447cfe021d90e560da8b68387def24c5cf435156fb4","source":{"kind":"arxiv","id":"2312.05963","version":1},"attestation_state":"computed","paper":{"title":"Finding the last bits of positional information","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"q-bio.MN","authors_text":"Helena Casademunt, Lauren McGough, Mariela D. Petkova, Milo\\v{s} Nikoli\\'c, Thomas Gregor, William Bialek","submitted_at":"2023-12-10T18:29:45Z","abstract_excerpt":"In a developing embryo, information about the position of cells is encoded in the concentrations of \"morphogen\" molecules. In the fruit fly, the local concentrations of just a handful of proteins encoded by the gap genes are sufficient to specify position with a precision comparable to the spacing between cells along the anterior--posterior axis. This matches the precision of downstream events such as the striped patterns of expression in the pair-rule genes, but is not quite sufficient to define unique identities for individual cells. We demonstrate theoretically that this information gap can"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"2312.05963","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"q-bio.MN","submitted_at":"2023-12-10T18:29:45Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"d449de875de5919a2ce4903577263d0ed0493d87098c9880217c41fe2051fd97","abstract_canon_sha256":"5d758e5450788361cb7d0543c231bfc85fae804b73f169cc8cfa1e4f0414f440"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T10:12:57.766040Z","signature_b64":"nyMtTiF9UrO/g0/7KKe8pz+1SadNj36mVNCZdZcsey1D4Vz84JY92a1MvL+IrGh43iXF/S5XEAbVuAvHlEiBDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bdf61c0fa74f9d8452760447cfe021d90e560da8b68387def24c5cf435156fb4","last_reissued_at":"2026-07-05T10:12:57.765534Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T10:12:57.765534Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Finding the last bits of positional information","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"q-bio.MN","authors_text":"Helena Casademunt, Lauren McGough, Mariela D. Petkova, Milo\\v{s} Nikoli\\'c, Thomas Gregor, William Bialek","submitted_at":"2023-12-10T18:29:45Z","abstract_excerpt":"In a developing embryo, information about the position of cells is encoded in the concentrations of \"morphogen\" molecules. In the fruit fly, the local concentrations of just a handful of proteins encoded by the gap genes are sufficient to specify position with a precision comparable to the spacing between cells along the anterior--posterior axis. This matches the precision of downstream events such as the striped patterns of expression in the pair-rule genes, but is not quite sufficient to define unique identities for individual cells. We demonstrate theoretically that this information gap can"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2312.05963","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/2312.05963/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"},"aliases":[{"alias_kind":"arxiv","alias_value":"2312.05963","created_at":"2026-07-05T10:12:57.765595+00:00"},{"alias_kind":"arxiv_version","alias_value":"2312.05963v1","created_at":"2026-07-05T10:12:57.765595+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2312.05963","created_at":"2026-07-05T10:12:57.765595+00:00"},{"alias_kind":"pith_short_12","alias_value":"XX3BYD5HJ6OY","created_at":"2026-07-05T10:12:57.765595+00:00"},{"alias_kind":"pith_short_16","alias_value":"XX3BYD5HJ6OYIUTW","created_at":"2026-07-05T10:12:57.765595+00:00"},{"alias_kind":"pith_short_8","alias_value":"XX3BYD5H","created_at":"2026-07-05T10:12:57.765595+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/XX3BYD5HJ6OYIUTWARD47YBB3E","json":"https://pith.science/pith/XX3BYD5HJ6OYIUTWARD47YBB3E.json","graph_json":"https://pith.science/api/pith-number/XX3BYD5HJ6OYIUTWARD47YBB3E/graph.json","events_json":"https://pith.science/api/pith-number/XX3BYD5HJ6OYIUTWARD47YBB3E/events.json","paper":"https://pith.science/paper/XX3BYD5H"},"agent_actions":{"view_html":"https://pith.science/pith/XX3BYD5HJ6OYIUTWARD47YBB3E","download_json":"https://pith.science/pith/XX3BYD5HJ6OYIUTWARD47YBB3E.json","view_paper":"https://pith.science/paper/XX3BYD5H","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2312.05963&json=true","fetch_graph":"https://pith.science/api/pith-number/XX3BYD5HJ6OYIUTWARD47YBB3E/graph.json","fetch_events":"https://pith.science/api/pith-number/XX3BYD5HJ6OYIUTWARD47YBB3E/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XX3BYD5HJ6OYIUTWARD47YBB3E/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XX3BYD5HJ6OYIUTWARD47YBB3E/action/storage_attestation","attest_author":"https://pith.science/pith/XX3BYD5HJ6OYIUTWARD47YBB3E/action/author_attestation","sign_citation":"https://pith.science/pith/XX3BYD5HJ6OYIUTWARD47YBB3E/action/citation_signature","submit_replication":"https://pith.science/pith/XX3BYD5HJ6OYIUTWARD47YBB3E/action/replication_record"}},"created_at":"2026-07-05T10:12:57.765595+00:00","updated_at":"2026-07-05T10:12:57.765595+00:00"}