{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:ALIJYMUODDN5YG74E5FMXTTDSL","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":"f5d1678792a99b2115190ee57b64326097befa32f7ea8f809467bb16aecd9452","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-10-10T19:07:59Z","title_canon_sha256":"4f3b6d2f6ee28aec4b6bc802737cdac48952d2af71dae660eea5077296b15454"},"schema_version":"1.0","source":{"id":"1810.04711","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1810.04711","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"arxiv_version","alias_value":"1810.04711v2","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1810.04711","created_at":"2026-05-17T23:50:12Z"},{"alias_kind":"pith_short_12","alias_value":"ALIJYMUODDN5","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_16","alias_value":"ALIJYMUODDN5YG74","created_at":"2026-05-18T12:32:13Z"},{"alias_kind":"pith_short_8","alias_value":"ALIJYMUO","created_at":"2026-05-18T12:32:13Z"}],"graph_snapshots":[{"event_id":"sha256:150872d42d315fe5ef618a9489558ef56d9cff313855e57b89d72590b604702d","target":"graph","created_at":"2026-05-17T23:50:12Z","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 investigate and experimentally observe the existence of topologically protected interface modes in a one-dimensional mechanical lattice, and we report on the effect of nonlinearities on topological protection. The lattice consists of a one-dimensional array of spinners with nearest neighbor coupling resulting from magnetic interactions. The distance between the spinners is spatially modulated to obtain a diatomic configuration, and to produce a non-trivial interface by breaking spatial inversion symmetry. For small amplitudes of motion, the interactions are approximately linear, and the sys","authors_text":"Glaucio H. Paulino, Javier Vila, Massimo Ruzzene","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-10-10T19:07:59Z","title":"The role of nonlinearities in topological protection: using magnetically coupled fidget spinners"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1810.04711","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:ae722721bcfcdfaee7a8f869de5be8b20c686af8dbc055207c8fc0cc51656562","target":"record","created_at":"2026-05-17T23:50:12Z","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":"f5d1678792a99b2115190ee57b64326097befa32f7ea8f809467bb16aecd9452","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2018-10-10T19:07:59Z","title_canon_sha256":"4f3b6d2f6ee28aec4b6bc802737cdac48952d2af71dae660eea5077296b15454"},"schema_version":"1.0","source":{"id":"1810.04711","kind":"arxiv","version":2}},"canonical_sha256":"02d09c328e18dbdc1bfc274acbce6392fae78852edb3a771d9e2acdec0aa51e5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"02d09c328e18dbdc1bfc274acbce6392fae78852edb3a771d9e2acdec0aa51e5","first_computed_at":"2026-05-17T23:50:12.112474Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:50:12.112474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/uFLZsQKAwMreRdTq9gslXivTdR5ileTuKvBxRU4ohHDYQCMHRZuh/b2NKUTB+xfp+LbQjH8AKq8QwINuBHNDQ==","signature_status":"signed_v1","signed_at":"2026-05-17T23:50:12.112928Z","signed_message":"canonical_sha256_bytes"},"source_id":"1810.04711","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ae722721bcfcdfaee7a8f869de5be8b20c686af8dbc055207c8fc0cc51656562","sha256:150872d42d315fe5ef618a9489558ef56d9cff313855e57b89d72590b604702d"],"state_sha256":"3270f635192db648daddfcf640c0dc5d90146cb7dd38214ffe2fdf9654fa888a"}