{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2026:2ENPMRAPWRSDIZJPNI3OZJJWVS","short_pith_number":"pith:2ENPMRAP","schema_version":"1.0","canonical_sha256":"d11af6440fb46434652f6a36eca536aca48eccf01f988c8410f95d12ee3c0241","source":{"kind":"arxiv","id":"2601.14467","version":3},"attestation_state":"computed","paper":{"title":"Tissue shape from cell-scale active tensions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"cond-mat.soft","authors_text":"Boris I. Shraiman, Fridtjof Brauns, Nikolas H. Claussen","submitted_at":"2026-01-20T20:44:02Z","abstract_excerpt":"Connecting cell behavior to tissue shape and mechanics is a key challenge in the physics of morphogenesis. Cytoskeletal turnover precludes a fixed reference state, and tensions are actively generated independently of strain; so conventional elasticity theory is not applicable. Here, we study epithelia governed by quasi-static force balance between intracellular pressure and internal, active tensions. This makes the tissue a distributed hydrostatic skeleton. Our theory starts from a set of prescribed active tensions. It treats cell interfaces as force dipoles whose embedding in physical space -"},"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":"2601.14467","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cond-mat.soft","submitted_at":"2026-01-20T20:44:02Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"62a3cc15b2284e3dacf2d9f946f8a05264ac93ceb1711eb26cca4373d83e6c7b","abstract_canon_sha256":"d09daadfd2d28caa18e9e46dbac7c3327142b94fa96fcf094202ca1b47712f31"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-28T02:04:45.343391Z","signature_b64":"vwgWH5UmZPbVf/T+ys3ilCcboI0XeoMJo2HjLrvIns8mL2ygpd2HxV2iVPBS98Ntqt6+0B9c4YuOOAvpJwD8Dw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d11af6440fb46434652f6a36eca536aca48eccf01f988c8410f95d12ee3c0241","last_reissued_at":"2026-05-28T02:04:45.342882Z","signature_status":"signed_v1","first_computed_at":"2026-05-28T02:04:45.342882Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Tissue shape from cell-scale active tensions","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"cond-mat.soft","authors_text":"Boris I. Shraiman, Fridtjof Brauns, Nikolas H. Claussen","submitted_at":"2026-01-20T20:44:02Z","abstract_excerpt":"Connecting cell behavior to tissue shape and mechanics is a key challenge in the physics of morphogenesis. Cytoskeletal turnover precludes a fixed reference state, and tensions are actively generated independently of strain; so conventional elasticity theory is not applicable. Here, we study epithelia governed by quasi-static force balance between intracellular pressure and internal, active tensions. This makes the tissue a distributed hydrostatic skeleton. Our theory starts from a set of prescribed active tensions. It treats cell interfaces as force dipoles whose embedding in physical space -"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2601.14467","kind":"arxiv","version":3},"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/2601.14467/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":"2601.14467","created_at":"2026-05-28T02:04:45.342942+00:00"},{"alias_kind":"arxiv_version","alias_value":"2601.14467v3","created_at":"2026-05-28T02:04:45.342942+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2601.14467","created_at":"2026-05-28T02:04:45.342942+00:00"},{"alias_kind":"pith_short_12","alias_value":"2ENPMRAPWRSD","created_at":"2026-05-28T02:04:45.342942+00:00"},{"alias_kind":"pith_short_16","alias_value":"2ENPMRAPWRSDIZJP","created_at":"2026-05-28T02:04:45.342942+00:00"},{"alias_kind":"pith_short_8","alias_value":"2ENPMRAP","created_at":"2026-05-28T02:04:45.342942+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/2ENPMRAPWRSDIZJPNI3OZJJWVS","json":"https://pith.science/pith/2ENPMRAPWRSDIZJPNI3OZJJWVS.json","graph_json":"https://pith.science/api/pith-number/2ENPMRAPWRSDIZJPNI3OZJJWVS/graph.json","events_json":"https://pith.science/api/pith-number/2ENPMRAPWRSDIZJPNI3OZJJWVS/events.json","paper":"https://pith.science/paper/2ENPMRAP"},"agent_actions":{"view_html":"https://pith.science/pith/2ENPMRAPWRSDIZJPNI3OZJJWVS","download_json":"https://pith.science/pith/2ENPMRAPWRSDIZJPNI3OZJJWVS.json","view_paper":"https://pith.science/paper/2ENPMRAP","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2601.14467&json=true","fetch_graph":"https://pith.science/api/pith-number/2ENPMRAPWRSDIZJPNI3OZJJWVS/graph.json","fetch_events":"https://pith.science/api/pith-number/2ENPMRAPWRSDIZJPNI3OZJJWVS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2ENPMRAPWRSDIZJPNI3OZJJWVS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2ENPMRAPWRSDIZJPNI3OZJJWVS/action/storage_attestation","attest_author":"https://pith.science/pith/2ENPMRAPWRSDIZJPNI3OZJJWVS/action/author_attestation","sign_citation":"https://pith.science/pith/2ENPMRAPWRSDIZJPNI3OZJJWVS/action/citation_signature","submit_replication":"https://pith.science/pith/2ENPMRAPWRSDIZJPNI3OZJJWVS/action/replication_record"}},"created_at":"2026-05-28T02:04:45.342942+00:00","updated_at":"2026-05-28T02:04:45.342942+00:00"}