{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:BNC2EQBCKFIROC6QTAG6OJIRJM","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":"79690feae1bf6c22e98eb146c43250e58ca7d469e69f4494184086a3c0e3cd55","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-09-06T18:00:04Z","title_canon_sha256":"ec8b50809604ae2ea5bf08adfb881a62da6cb685d59e2be76d7ac19a7f651c79"},"schema_version":"1.0","source":{"id":"1809.02142","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1809.02142","created_at":"2026-05-17T23:41:46Z"},{"alias_kind":"arxiv_version","alias_value":"1809.02142v3","created_at":"2026-05-17T23:41:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.02142","created_at":"2026-05-17T23:41:46Z"},{"alias_kind":"pith_short_12","alias_value":"BNC2EQBCKFIR","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_16","alias_value":"BNC2EQBCKFIROC6Q","created_at":"2026-05-18T12:32:16Z"},{"alias_kind":"pith_short_8","alias_value":"BNC2EQBC","created_at":"2026-05-18T12:32:16Z"}],"graph_snapshots":[{"event_id":"sha256:b869d47263315b128330e0aa0399cc2eb3be4de4aa96a253a025092042b85700","target":"graph","created_at":"2026-05-17T23:41:46Z","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":"In the presence of crystalline symmetries, certain topological insulators present a filling anomaly: a mismatch between the number of electrons in an energy band and the number of electrons required for charge neutrality. In this paper, we show that a filling anomaly can arise when corners are introduced in $C_n$-symmetric crystalline insulators with vanishing polarization, having as consequence the existence of corner-localized charges quantized in multiples of $\\frac{e}{n}$. We characterize the existence of this charge systematically and build topological indices that relate the symmetry rep","authors_text":"Taylor L. Hughes, Tianhe Li, Wladimir A. Benalcazar","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-09-06T18:00:04Z","title":"Quantization of fractional corner charge in $C_n$-symmetric higher-order topological crystalline insulators"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.02142","kind":"arxiv","version":3},"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":"sha256:3dcf679352477fa702f7d1e0959906416f74da6980cf03a7be1b9cf2f4ec0245","target":"record","created_at":"2026-05-17T23:41:46Z","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":"79690feae1bf6c22e98eb146c43250e58ca7d469e69f4494184086a3c0e3cd55","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.str-el","submitted_at":"2018-09-06T18:00:04Z","title_canon_sha256":"ec8b50809604ae2ea5bf08adfb881a62da6cb685d59e2be76d7ac19a7f651c79"},"schema_version":"1.0","source":{"id":"1809.02142","kind":"arxiv","version":3}},"canonical_sha256":"0b45a240225151170bd0980de725114b2762fe8bdc2054dcdd973c74788b23fb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0b45a240225151170bd0980de725114b2762fe8bdc2054dcdd973c74788b23fb","first_computed_at":"2026-05-17T23:41:46.102345Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:41:46.102345Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"i+E11AQ/tkAOmEcyUqZx1LhC/QpejIC2K8JRoyjLSfYIW0pKVpQ/mgk8wJwnLA6vjdd9iHSLeAAL74mq7JdqCA==","signature_status":"signed_v1","signed_at":"2026-05-17T23:41:46.103076Z","signed_message":"canonical_sha256_bytes"},"source_id":"1809.02142","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3dcf679352477fa702f7d1e0959906416f74da6980cf03a7be1b9cf2f4ec0245","sha256:b869d47263315b128330e0aa0399cc2eb3be4de4aa96a253a025092042b85700"],"state_sha256":"4e15869c67f1b8751a87e2b783e672e4957487d96f07e57a07f827fc41416087"}