{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:YIMTJR4GE6PULB4F2MNALM3AKN","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":"1c47382ae0c212c7c6ead691dd8eadb37edc1524b82d003baedac2968dbe5741","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2013-05-21T15:39:40Z","title_canon_sha256":"104e5fa7e16f09750447f11d2f28b74bbaa71301912d5837159f1f6b378988e4"},"schema_version":"1.0","source":{"id":"1305.4861","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1305.4861","created_at":"2026-05-18T03:02:57Z"},{"alias_kind":"arxiv_version","alias_value":"1305.4861v2","created_at":"2026-05-18T03:02:57Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1305.4861","created_at":"2026-05-18T03:02:57Z"},{"alias_kind":"pith_short_12","alias_value":"YIMTJR4GE6PU","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"YIMTJR4GE6PULB4F","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"YIMTJR4G","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:4447e3a452bc5c035b5816de965a66261079e6172fbbeab0a6a76093d5387af2","target":"graph","created_at":"2026-05-18T03:02:57Z","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 ideal Penning trap consists of a uniform magnetic field and an electrostatic quadrupole potential. Cylindrically-symmetric deviations thereof are parametrized by the coefficients Bn and Cn, respectively. Relativistic mass-increase aside, the three characteristic eigenfrequencies of a charged particle stored in an ideal Penning trap are independent of the three motional amplitudes. This three-fold harmonicity is a highly-coveted virtue for precision experiments that rely on the measurement of at least one eigenfrequency in order to determine fundamental properties of the stored particle, su","authors_text":"Jochen Ketter, Klaus Blaum, Martin H\\\"ocker, Sebastian Streubel, Tommi Eronen","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2013-05-21T15:39:40Z","title":"First-order perturbative calculation of the frequency-shifts caused by static cylindrically-symmetric electric and magnetic imperfections of a Penning trap"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1305.4861","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:c85bf69b0d929ab28e0e3f39051f11dc832a54ea4209742b83e128ea6354347a","target":"record","created_at":"2026-05-18T03:02:57Z","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":"1c47382ae0c212c7c6ead691dd8eadb37edc1524b82d003baedac2968dbe5741","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.atom-ph","submitted_at":"2013-05-21T15:39:40Z","title_canon_sha256":"104e5fa7e16f09750447f11d2f28b74bbaa71301912d5837159f1f6b378988e4"},"schema_version":"1.0","source":{"id":"1305.4861","kind":"arxiv","version":2}},"canonical_sha256":"c21934c786279f458785d31a05b36053459ba87c0eebc483d6de4d7c3ab3d66b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c21934c786279f458785d31a05b36053459ba87c0eebc483d6de4d7c3ab3d66b","first_computed_at":"2026-05-18T03:02:57.279204Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:02:57.279204Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"SkRBhOWg3YiJj81l25nPV/XwPWbeZIOaxCjUtidUCpdNqUYgC0mLPtIKiKPOnXXZR3B4vbxDru+YuEQslx1BDg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:02:57.279911Z","signed_message":"canonical_sha256_bytes"},"source_id":"1305.4861","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c85bf69b0d929ab28e0e3f39051f11dc832a54ea4209742b83e128ea6354347a","sha256:4447e3a452bc5c035b5816de965a66261079e6172fbbeab0a6a76093d5387af2"],"state_sha256":"6d1414be1e2b062a24aa1d1419343e5140be58d56b6ac5b701db7840f531c1de"}