{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:S7QJZQ5R4YI43DUTD35D4E4IIS","short_pith_number":"pith:S7QJZQ5R","canonical_record":{"source":{"id":"0905.0004","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-04-30T20:00:34Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"81e7d65118d6206a56b25f5ec01afd667f019ffe69558ca22afca6f4a87bbcf9","abstract_canon_sha256":"5c965ae256a7aa72a8546583ae76738b581efb9c8ce71a3c7ff77dc62da32fe6"},"schema_version":"1.0"},"canonical_sha256":"97e09cc3b1e611cd8e931efa3e138844829590e057f197b90604774d412fb32b","source":{"kind":"arxiv","id":"0905.0004","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.0004","created_at":"2026-05-18T04:39:08Z"},{"alias_kind":"arxiv_version","alias_value":"0905.0004v2","created_at":"2026-05-18T04:39:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.0004","created_at":"2026-05-18T04:39:08Z"},{"alias_kind":"pith_short_12","alias_value":"S7QJZQ5R4YI4","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"S7QJZQ5R4YI43DUT","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"S7QJZQ5R","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:S7QJZQ5R4YI43DUTD35D4E4IIS","target":"record","payload":{"canonical_record":{"source":{"id":"0905.0004","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-04-30T20:00:34Z","cross_cats_sorted":["cond-mat.str-el"],"title_canon_sha256":"81e7d65118d6206a56b25f5ec01afd667f019ffe69558ca22afca6f4a87bbcf9","abstract_canon_sha256":"5c965ae256a7aa72a8546583ae76738b581efb9c8ce71a3c7ff77dc62da32fe6"},"schema_version":"1.0"},"canonical_sha256":"97e09cc3b1e611cd8e931efa3e138844829590e057f197b90604774d412fb32b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:39:08.214688Z","signature_b64":"Ab9CD6QSek1jxuq0zoyasTe5/e5AXnBeav5hDZ0XttAWatwdo1JjWX9PYnEKdTV0oy6TVX8Gw10qDpHYTzqSAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"97e09cc3b1e611cd8e931efa3e138844829590e057f197b90604774d412fb32b","last_reissued_at":"2026-05-18T04:39:08.214022Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:39:08.214022Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0905.0004","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":"2026-05-18T04:39:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4mgyN7a0vjaMyB+0nwbx6O5QcVwG6d53M2WLp2Y8G7VshMgzCulZtQwtU4mW7oHzSZkM+DcEnYu5D+GbX4dKDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:23:35.862091Z"},"content_sha256":"ef6594571ec4069c7cdf35a85096cc044ca2f742c4c0d9a5a69c48ba96ccdb88","schema_version":"1.0","event_id":"sha256:ef6594571ec4069c7cdf35a85096cc044ca2f742c4c0d9a5a69c48ba96ccdb88"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:S7QJZQ5R4YI43DUTD35D4E4IIS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Lattice defects and boundaries in conducting carbon nanotubes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.str-el"],"primary_cat":"cond-mat.mes-hall","authors_text":"Alexander Struck, Sebastian A. Reyes, Sebastian Eggert","submitted_at":"2009-04-30T20:00:34Z","abstract_excerpt":"We consider the effect of various defects and boundary structures on the low energy electronic properties in conducting zigzag and armchair carbon nanotubes. The tight binding model of the conduction bands is mapped exactly onto simple lattice models consisting of two uncoupled parallel chains. Imperfections such as impurities, structural defects or caps can be easily included into the effective lattice models, allowing a detailed physical interpretation of their consequences. The method is quite general and can be used to study a wide range of possible imperfections in carbon nanotubes. We ob"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.0004","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":"2026-05-18T04:39:08Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gBeq68rzuESyEIOm/Uqo1qG4hJOfDk4vcABFuF8T3iifZnJm6x8kH6NLPieb8be2eN8kphynEYBZ3jS/Y3BUBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:23:35.862614Z"},"content_sha256":"5c0f72ac7e1026d49ff77538947c2bb991d94a29be380e57f7a4b03f7df59a37","schema_version":"1.0","event_id":"sha256:5c0f72ac7e1026d49ff77538947c2bb991d94a29be380e57f7a4b03f7df59a37"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/S7QJZQ5R4YI43DUTD35D4E4IIS/bundle.json","state_url":"https://pith.science/pith/S7QJZQ5R4YI43DUTD35D4E4IIS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/S7QJZQ5R4YI43DUTD35D4E4IIS/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":"2026-05-25T19:23:35Z","links":{"resolver":"https://pith.science/pith/S7QJZQ5R4YI43DUTD35D4E4IIS","bundle":"https://pith.science/pith/S7QJZQ5R4YI43DUTD35D4E4IIS/bundle.json","state":"https://pith.science/pith/S7QJZQ5R4YI43DUTD35D4E4IIS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/S7QJZQ5R4YI43DUTD35D4E4IIS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:S7QJZQ5R4YI43DUTD35D4E4IIS","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":"5c965ae256a7aa72a8546583ae76738b581efb9c8ce71a3c7ff77dc62da32fe6","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-04-30T20:00:34Z","title_canon_sha256":"81e7d65118d6206a56b25f5ec01afd667f019ffe69558ca22afca6f4a87bbcf9"},"schema_version":"1.0","source":{"id":"0905.0004","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0905.0004","created_at":"2026-05-18T04:39:08Z"},{"alias_kind":"arxiv_version","alias_value":"0905.0004v2","created_at":"2026-05-18T04:39:08Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0905.0004","created_at":"2026-05-18T04:39:08Z"},{"alias_kind":"pith_short_12","alias_value":"S7QJZQ5R4YI4","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"S7QJZQ5R4YI43DUT","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"S7QJZQ5R","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:5c0f72ac7e1026d49ff77538947c2bb991d94a29be380e57f7a4b03f7df59a37","target":"graph","created_at":"2026-05-18T04:39:08Z","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 consider the effect of various defects and boundary structures on the low energy electronic properties in conducting zigzag and armchair carbon nanotubes. The tight binding model of the conduction bands is mapped exactly onto simple lattice models consisting of two uncoupled parallel chains. Imperfections such as impurities, structural defects or caps can be easily included into the effective lattice models, allowing a detailed physical interpretation of their consequences. The method is quite general and can be used to study a wide range of possible imperfections in carbon nanotubes. We ob","authors_text":"Alexander Struck, Sebastian A. Reyes, Sebastian Eggert","cross_cats":["cond-mat.str-el"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-04-30T20:00:34Z","title":"Lattice defects and boundaries in conducting carbon nanotubes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0905.0004","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:ef6594571ec4069c7cdf35a85096cc044ca2f742c4c0d9a5a69c48ba96ccdb88","target":"record","created_at":"2026-05-18T04:39:08Z","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":"5c965ae256a7aa72a8546583ae76738b581efb9c8ce71a3c7ff77dc62da32fe6","cross_cats_sorted":["cond-mat.str-el"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mes-hall","submitted_at":"2009-04-30T20:00:34Z","title_canon_sha256":"81e7d65118d6206a56b25f5ec01afd667f019ffe69558ca22afca6f4a87bbcf9"},"schema_version":"1.0","source":{"id":"0905.0004","kind":"arxiv","version":2}},"canonical_sha256":"97e09cc3b1e611cd8e931efa3e138844829590e057f197b90604774d412fb32b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"97e09cc3b1e611cd8e931efa3e138844829590e057f197b90604774d412fb32b","first_computed_at":"2026-05-18T04:39:08.214022Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:39:08.214022Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Ab9CD6QSek1jxuq0zoyasTe5/e5AXnBeav5hDZ0XttAWatwdo1JjWX9PYnEKdTV0oy6TVX8Gw10qDpHYTzqSAA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:39:08.214688Z","signed_message":"canonical_sha256_bytes"},"source_id":"0905.0004","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ef6594571ec4069c7cdf35a85096cc044ca2f742c4c0d9a5a69c48ba96ccdb88","sha256:5c0f72ac7e1026d49ff77538947c2bb991d94a29be380e57f7a4b03f7df59a37"],"state_sha256":"d453ed4ed4287f9f05621e52e2948dfa30ba3917f0194e1616620d0e9a9e16f3"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"5wehwj0WnIUV/FNhtGOsI6z4DqseWjOelI3ncq8s86yGejiyqHMsa0i4M53I3sFBOi8yYSPEv9LGcayNQ0yxAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:23:35.865491Z","bundle_sha256":"8f1123bdbf85bc351e484b45344f184dbb6364b33f857fe0f946487cdbd7f247"}}