{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2011:SGIOFWUNVWCGK5IDD4RI3IC7BV","short_pith_number":"pith:SGIOFWUN","schema_version":"1.0","canonical_sha256":"9190e2da8dad846575031f228da05f0d64dd2e528c76d3231dfa43064cf2ae8a","source":{"kind":"arxiv","id":"1103.2284","version":2},"attestation_state":"computed","paper":{"title":"Dynamical constraints from field line topology in magnetic flux tubes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","nlin.CD"],"primary_cat":"physics.plasm-ph","authors_text":"A. R. Yeates, G. Hornig","submitted_at":"2011-03-11T14:52:01Z","abstract_excerpt":"A topological constraint on the dynamics of a magnetic field in a flux tube arises from the fixed point indices of its field line mapping. This can explain unexpected behaviour in recent resistive-magnetohydrodynamic simulations of magnetic relaxation. Here we present the theory for a general periodic flux tube, representing, for example, a toroidal confinement device or a solar coronal loop. We show how an ideal dynamics on the side boundary of the tube implies that the sum of indices over all interior fixed points is invariant. This constraint applies to any continuous evolution inside the t"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1103.2284","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2011-03-11T14:52:01Z","cross_cats_sorted":["astro-ph.SR","nlin.CD"],"title_canon_sha256":"8cc27e52ecc975f215af47d6fd09664be9f79b99a5a30ce7318758f2af675abd","abstract_canon_sha256":"e5487114f0cd3dfd7f093e8f3adff2eb385c8615b3ccdb8e21c34aec64b8cd9d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:22:19.969989Z","signature_b64":"B5PhjOplj/4BgacmlRxp8y4FrlxxdHWeq5hb3bzbsTeMbFviOAa8oEyq3F+NAHyR3EuVV1L9BIxCR3ryL8e9Bw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"9190e2da8dad846575031f228da05f0d64dd2e528c76d3231dfa43064cf2ae8a","last_reissued_at":"2026-05-18T02:22:19.969258Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:22:19.969258Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Dynamical constraints from field line topology in magnetic flux tubes","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.SR","nlin.CD"],"primary_cat":"physics.plasm-ph","authors_text":"A. R. Yeates, G. Hornig","submitted_at":"2011-03-11T14:52:01Z","abstract_excerpt":"A topological constraint on the dynamics of a magnetic field in a flux tube arises from the fixed point indices of its field line mapping. This can explain unexpected behaviour in recent resistive-magnetohydrodynamic simulations of magnetic relaxation. Here we present the theory for a general periodic flux tube, representing, for example, a toroidal confinement device or a solar coronal loop. We show how an ideal dynamics on the side boundary of the tube implies that the sum of indices over all interior fixed points is invariant. This constraint applies to any continuous evolution inside the t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1103.2284","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1103.2284","created_at":"2026-05-18T02:22:19.969363+00:00"},{"alias_kind":"arxiv_version","alias_value":"1103.2284v2","created_at":"2026-05-18T02:22:19.969363+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1103.2284","created_at":"2026-05-18T02:22:19.969363+00:00"},{"alias_kind":"pith_short_12","alias_value":"SGIOFWUNVWCG","created_at":"2026-05-18T12:26:41.206345+00:00"},{"alias_kind":"pith_short_16","alias_value":"SGIOFWUNVWCGK5ID","created_at":"2026-05-18T12:26:41.206345+00:00"},{"alias_kind":"pith_short_8","alias_value":"SGIOFWUN","created_at":"2026-05-18T12:26:41.206345+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/SGIOFWUNVWCGK5IDD4RI3IC7BV","json":"https://pith.science/pith/SGIOFWUNVWCGK5IDD4RI3IC7BV.json","graph_json":"https://pith.science/api/pith-number/SGIOFWUNVWCGK5IDD4RI3IC7BV/graph.json","events_json":"https://pith.science/api/pith-number/SGIOFWUNVWCGK5IDD4RI3IC7BV/events.json","paper":"https://pith.science/paper/SGIOFWUN"},"agent_actions":{"view_html":"https://pith.science/pith/SGIOFWUNVWCGK5IDD4RI3IC7BV","download_json":"https://pith.science/pith/SGIOFWUNVWCGK5IDD4RI3IC7BV.json","view_paper":"https://pith.science/paper/SGIOFWUN","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1103.2284&json=true","fetch_graph":"https://pith.science/api/pith-number/SGIOFWUNVWCGK5IDD4RI3IC7BV/graph.json","fetch_events":"https://pith.science/api/pith-number/SGIOFWUNVWCGK5IDD4RI3IC7BV/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/SGIOFWUNVWCGK5IDD4RI3IC7BV/action/timestamp_anchor","attest_storage":"https://pith.science/pith/SGIOFWUNVWCGK5IDD4RI3IC7BV/action/storage_attestation","attest_author":"https://pith.science/pith/SGIOFWUNVWCGK5IDD4RI3IC7BV/action/author_attestation","sign_citation":"https://pith.science/pith/SGIOFWUNVWCGK5IDD4RI3IC7BV/action/citation_signature","submit_replication":"https://pith.science/pith/SGIOFWUNVWCGK5IDD4RI3IC7BV/action/replication_record"}},"created_at":"2026-05-18T02:22:19.969363+00:00","updated_at":"2026-05-18T02:22:19.969363+00:00"}