{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:D5ZCSGXAP6NTKFJTWIXXAWQTMD","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":"f697e25d3bbf65b79ee933b44d06c209e766f37aaee81d9804230b6e0d39ef83","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-02-07T15:17:27Z","title_canon_sha256":"aa3c4065ca0741c17aec442a7dce09a9486e5d9c2ec07fd469699c5dadd0dc37"},"schema_version":"1.0","source":{"id":"1802.02472","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1802.02472","created_at":"2026-05-18T00:24:03Z"},{"alias_kind":"arxiv_version","alias_value":"1802.02472v1","created_at":"2026-05-18T00:24:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1802.02472","created_at":"2026-05-18T00:24:03Z"},{"alias_kind":"pith_short_12","alias_value":"D5ZCSGXAP6NT","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_16","alias_value":"D5ZCSGXAP6NTKFJT","created_at":"2026-05-18T12:32:19Z"},{"alias_kind":"pith_short_8","alias_value":"D5ZCSGXA","created_at":"2026-05-18T12:32:19Z"}],"graph_snapshots":[{"event_id":"sha256:efcbea85d22ebdb4d098141ff11595d068a743c12a3058139c0e40ffb4b7a13d","target":"graph","created_at":"2026-05-18T00:24:03Z","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 show that thin rectangular ribbons, defined as energy-minimising configurations of the Sadowsky functional for narrow developable elastic strips, have a propensity to form spherical shapes in the sense that forceless solutions lie on a sphere. This has implications for ribbonlike objects in (bio)polymer physics and nanoscience that cannot be described by the classical wormlike chain model. A wider class of functionals with this property is identified.","authors_text":"E. L. Starostin, G. H. M. van der Heijden","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-02-07T15:17:27Z","title":"Forceless Sadowsky strips are spherical"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.02472","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:c0d3f61ec02b6d72e89c44c537afbed8a4de1fd64d5547f645ef660da8897189","target":"record","created_at":"2026-05-18T00:24:03Z","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":"f697e25d3bbf65b79ee933b44d06c209e766f37aaee81d9804230b6e0d39ef83","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-02-07T15:17:27Z","title_canon_sha256":"aa3c4065ca0741c17aec442a7dce09a9486e5d9c2ec07fd469699c5dadd0dc37"},"schema_version":"1.0","source":{"id":"1802.02472","kind":"arxiv","version":1}},"canonical_sha256":"1f72291ae07f9b351533b22f705a1360fb2a62d15c981c0c97c476f36d5d7373","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"1f72291ae07f9b351533b22f705a1360fb2a62d15c981c0c97c476f36d5d7373","first_computed_at":"2026-05-18T00:24:03.625539Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:03.625539Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ufhAVKNkrs2BZFXpfBbYVN6KejwO2Qh1nplIG3CSIoiXRbwAW8xOoGiQXFvY24H4SmGuI8jDMipv1MoFMiM2DQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:03.625945Z","signed_message":"canonical_sha256_bytes"},"source_id":"1802.02472","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c0d3f61ec02b6d72e89c44c537afbed8a4de1fd64d5547f645ef660da8897189","sha256:efcbea85d22ebdb4d098141ff11595d068a743c12a3058139c0e40ffb4b7a13d"],"state_sha256":"fde35b591833828d0b929578b2e3499c02422856cf17c95ee727cda7ee6068c1"}