{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:YI7OS6BGULPVZSKRGNW2Q3EMPN","short_pith_number":"pith:YI7OS6BG","canonical_record":{"source":{"id":"1301.5513","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-01-23T14:32:45Z","cross_cats_sorted":[],"title_canon_sha256":"92308d15b09cb0785b7803abe58777408d2d7c2ce2a50a935c8235841827398c","abstract_canon_sha256":"0e58049bfaf1ede0671433c4571b5aff9892fcb2c22db6907976ee077aade68b"},"schema_version":"1.0"},"canonical_sha256":"c23ee97826a2df5cc951336da86c8c7b53d96408771e230cb0c86e2da7d094d5","source":{"kind":"arxiv","id":"1301.5513","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.5513","created_at":"2026-05-18T00:24:04Z"},{"alias_kind":"arxiv_version","alias_value":"1301.5513v2","created_at":"2026-05-18T00:24:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.5513","created_at":"2026-05-18T00:24:04Z"},{"alias_kind":"pith_short_12","alias_value":"YI7OS6BGULPV","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YI7OS6BGULPVZSKR","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YI7OS6BG","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:YI7OS6BGULPVZSKRGNW2Q3EMPN","target":"record","payload":{"canonical_record":{"source":{"id":"1301.5513","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-01-23T14:32:45Z","cross_cats_sorted":[],"title_canon_sha256":"92308d15b09cb0785b7803abe58777408d2d7c2ce2a50a935c8235841827398c","abstract_canon_sha256":"0e58049bfaf1ede0671433c4571b5aff9892fcb2c22db6907976ee077aade68b"},"schema_version":"1.0"},"canonical_sha256":"c23ee97826a2df5cc951336da86c8c7b53d96408771e230cb0c86e2da7d094d5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:24:04.846395Z","signature_b64":"HVF9P6iIVhFV5EymBrg3gtC4acQb/GaqWI9rYzkuyFhhyUUELrqRszwpM4qPcZHWvL7ahcvgTzXF2b7caIIZBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c23ee97826a2df5cc951336da86c8c7b53d96408771e230cb0c86e2da7d094d5","last_reissued_at":"2026-05-18T00:24:04.845852Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:24:04.845852Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1301.5513","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:24:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5d0dKaAf27a1nsnsrRyVLqkGBemPelsC+9ViABcVyH8ylWmQxBcSJ25RlP0oIdEjo1ZhkPHvDyH8uQjxUVHECw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:50:33.807679Z"},"content_sha256":"4875cc2ec579a751d022556e45b06b39991d2d8aa37cf8a0dcd2ea337d3a345f","schema_version":"1.0","event_id":"sha256:4875cc2ec579a751d022556e45b06b39991d2d8aa37cf8a0dcd2ea337d3a345f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:YI7OS6BGULPVZSKRGNW2Q3EMPN","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Structural phase transition and band gap of uniaxially deformed (6,0) carbon nanotube","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mes-hall","authors_text":"A. M. Popov, E. F. Kislyakov, N. A. Poklonski, Nguyen Ai Viet, Nguyen Ngoc Hieu, O. N. Bubel', S. A. Vyrko, S. V. Ratkevich, Yu. E. Lozovik","submitted_at":"2013-01-23T14:32:45Z","abstract_excerpt":"The atomic and band structures of the (6,0) zigzag carbon nanotube at its axial elongation are calculated by semiempirical molecular orbital and by tight-binding methods. The ground state of the nanotube is found to have a Kekule structure with four types of bonds and difference between lengths of long and short bonds of about 0.005 nm. The structural phase transition is revealed at ~9% elongation, resulting in a quinoid structure with two types of bonds. This structural phase transition is followed by the transition from a narrow gap to moderate gap semiconductor. Validity of the semiempirica"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.5513","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:24:04Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"M3DJpn/DtW1muCgE0bqgrwKlqCm1mxJWJL/u4gjrZZKbhaTmhEa+422N4AVhAUkYgwDfHC0cmTnVYgBTR/bfCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-01T12:50:33.808030Z"},"content_sha256":"12f6f5f215671cd2b0bf178c2dccc0db1d087f31cc886a09a9d25a4ccf218366","schema_version":"1.0","event_id":"sha256:12f6f5f215671cd2b0bf178c2dccc0db1d087f31cc886a09a9d25a4ccf218366"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/YI7OS6BGULPVZSKRGNW2Q3EMPN/bundle.json","state_url":"https://pith.science/pith/YI7OS6BGULPVZSKRGNW2Q3EMPN/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/YI7OS6BGULPVZSKRGNW2Q3EMPN/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-01T12:50:33Z","links":{"resolver":"https://pith.science/pith/YI7OS6BGULPVZSKRGNW2Q3EMPN","bundle":"https://pith.science/pith/YI7OS6BGULPVZSKRGNW2Q3EMPN/bundle.json","state":"https://pith.science/pith/YI7OS6BGULPVZSKRGNW2Q3EMPN/state.json","well_known_bundle":"https://pith.science/.well-known/pith/YI7OS6BGULPVZSKRGNW2Q3EMPN/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:YI7OS6BGULPVZSKRGNW2Q3EMPN","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":"0e58049bfaf1ede0671433c4571b5aff9892fcb2c22db6907976ee077aade68b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-01-23T14:32:45Z","title_canon_sha256":"92308d15b09cb0785b7803abe58777408d2d7c2ce2a50a935c8235841827398c"},"schema_version":"1.0","source":{"id":"1301.5513","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1301.5513","created_at":"2026-05-18T00:24:04Z"},{"alias_kind":"arxiv_version","alias_value":"1301.5513v2","created_at":"2026-05-18T00:24:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1301.5513","created_at":"2026-05-18T00:24:04Z"},{"alias_kind":"pith_short_12","alias_value":"YI7OS6BGULPV","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YI7OS6BGULPVZSKR","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YI7OS6BG","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:12f6f5f215671cd2b0bf178c2dccc0db1d087f31cc886a09a9d25a4ccf218366","target":"graph","created_at":"2026-05-18T00:24:04Z","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":"The atomic and band structures of the (6,0) zigzag carbon nanotube at its axial elongation are calculated by semiempirical molecular orbital and by tight-binding methods. The ground state of the nanotube is found to have a Kekule structure with four types of bonds and difference between lengths of long and short bonds of about 0.005 nm. The structural phase transition is revealed at ~9% elongation, resulting in a quinoid structure with two types of bonds. This structural phase transition is followed by the transition from a narrow gap to moderate gap semiconductor. Validity of the semiempirica","authors_text":"A. M. Popov, E. F. Kislyakov, N. A. Poklonski, Nguyen Ai Viet, Nguyen Ngoc Hieu, O. N. Bubel', S. A. Vyrko, S. V. Ratkevich, Yu. E. Lozovik","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-01-23T14:32:45Z","title":"Structural phase transition and band gap of uniaxially deformed (6,0) carbon nanotube"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1301.5513","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":"sha256:4875cc2ec579a751d022556e45b06b39991d2d8aa37cf8a0dcd2ea337d3a345f","target":"record","created_at":"2026-05-18T00:24:04Z","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":"0e58049bfaf1ede0671433c4571b5aff9892fcb2c22db6907976ee077aade68b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2013-01-23T14:32:45Z","title_canon_sha256":"92308d15b09cb0785b7803abe58777408d2d7c2ce2a50a935c8235841827398c"},"schema_version":"1.0","source":{"id":"1301.5513","kind":"arxiv","version":2}},"canonical_sha256":"c23ee97826a2df5cc951336da86c8c7b53d96408771e230cb0c86e2da7d094d5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c23ee97826a2df5cc951336da86c8c7b53d96408771e230cb0c86e2da7d094d5","first_computed_at":"2026-05-18T00:24:04.845852Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:24:04.845852Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"HVF9P6iIVhFV5EymBrg3gtC4acQb/GaqWI9rYzkuyFhhyUUELrqRszwpM4qPcZHWvL7ahcvgTzXF2b7caIIZBA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:24:04.846395Z","signed_message":"canonical_sha256_bytes"},"source_id":"1301.5513","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4875cc2ec579a751d022556e45b06b39991d2d8aa37cf8a0dcd2ea337d3a345f","sha256:12f6f5f215671cd2b0bf178c2dccc0db1d087f31cc886a09a9d25a4ccf218366"],"state_sha256":"0cb89fe5ae8fcc52f3f660126e6ca91d6befeb43defe8a17a38ceedd14b73961"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"W7U7FuJtW5YfVogbbou2EVi9xWAgQg4854e+qMNa2of8ScVqOuNmXwCBrpPOdpwtyapac0cryCvR7ofVLFYSCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-01T12:50:33.810082Z","bundle_sha256":"f5303b4ac55b0ddad45e8d26ac721d90c3be2125081a5b91582d4344b4202242"}}