{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:EH6QN5EHNZJYOPGAJMDJZUB2L4","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":"96d8f8ced8f5fd09c5e2db123e470cbd344f8e627179977ba8e28ea3e44a0956","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-04-07T10:02:15Z","title_canon_sha256":"e0e514bb0ce13a8704c27164032eac8f07884d5c2e1c6b53f01021233aaddcf0"},"schema_version":"1.0","source":{"id":"1504.01540","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.01540","created_at":"2026-05-18T01:02:45Z"},{"alias_kind":"arxiv_version","alias_value":"1504.01540v1","created_at":"2026-05-18T01:02:45Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.01540","created_at":"2026-05-18T01:02:45Z"},{"alias_kind":"pith_short_12","alias_value":"EH6QN5EHNZJY","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_16","alias_value":"EH6QN5EHNZJYOPGA","created_at":"2026-05-18T12:29:19Z"},{"alias_kind":"pith_short_8","alias_value":"EH6QN5EH","created_at":"2026-05-18T12:29:19Z"}],"graph_snapshots":[{"event_id":"sha256:d7c189d0d7f493f3ff24f046f8354d1b1c20c9b432c195b07b61b43fe0a3273c","target":"graph","created_at":"2026-05-18T01:02:45Z","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":"Band structure is theoretically studied in partially flattened carbon nanotubes within an effective-mass scheme. Effects of inter-wall interactions are shown to be important in non-chiral nanotubes such as zigzag and armchair and can essentially be neglected in chiral nanotubes except in the close vicinity of non-chiral tubes. In fact, inter-wall interactions significantly modify states depending on relative displacement in the flattened region in non-chiral tubes and can convert semiconducting tubes into metallic and vice versa. They diminish rapidly when the chiral angle deviates from that o","authors_text":"Takeshi Nakanishi, Tsuneya Ando","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-04-07T10:02:15Z","title":"Effective-mass theory of collapsed carbon nanotubes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.01540","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":"sha256:6c15989791b24e4e2d799f4087224c87df9684b0f6254e9dc99568e36d0becc6","target":"record","created_at":"2026-05-18T01:02:45Z","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":"96d8f8ced8f5fd09c5e2db123e470cbd344f8e627179977ba8e28ea3e44a0956","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2015-04-07T10:02:15Z","title_canon_sha256":"e0e514bb0ce13a8704c27164032eac8f07884d5c2e1c6b53f01021233aaddcf0"},"schema_version":"1.0","source":{"id":"1504.01540","kind":"arxiv","version":1}},"canonical_sha256":"21fd06f4876e53873cc04b069cd03a5f0d23a88b742348b0aba205e919172b90","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"21fd06f4876e53873cc04b069cd03a5f0d23a88b742348b0aba205e919172b90","first_computed_at":"2026-05-18T01:02:45.941547Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:02:45.941547Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"RKoUBgLRDkbCcrtBtA9IBuBRgkvV4UvqzImqwbtHFLso9Ut7RDTR8mgYNRsDYHByhqnADox9u+T34Qtal5DCBA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:02:45.942185Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.01540","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6c15989791b24e4e2d799f4087224c87df9684b0f6254e9dc99568e36d0becc6","sha256:d7c189d0d7f493f3ff24f046f8354d1b1c20c9b432c195b07b61b43fe0a3273c"],"state_sha256":"6d69d6e7aa339b394a0f71ec12aa1b348d77d4d93227e676100320fa434445f3"}