{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2022:K6V3U5R3MI57MFD4BLPJ57EGAN","short_pith_number":"pith:K6V3U5R3","schema_version":"1.0","canonical_sha256":"57abba763b623bf6147c0ade9efc8603742a44ac79744f82e5144c081a5e6c1a","source":{"kind":"arxiv","id":"2209.11849","version":2},"attestation_state":"computed","paper":{"title":"Mapping the space of quasisymmetric stellarators using optimized near-axis expansion","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.plasm-ph","authors_text":"Matt Landreman","submitted_at":"2022-09-23T20:29:30Z","abstract_excerpt":"A method is demonstrated to rapidly calculate the shapes and properties of quasi-axisymmetric and quasi-helically symmetric stellarators. In this approach, optimization is applied to the equations of magnetohydrodynamic equilibrium and quasisymmetry, expanded in the small distance from the magnetic axis, as formulated by Garren and Boozer [Phys. Fluids B, 3, 2805 (1991)]. Due to the reduction of the equations by the expansion, the computational cost is significantly reduced, to times on the order of 1 cpu-second, enabling wide and high-resolution scans over parameter space. In contrast to trad"},"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":"2209.11849","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"physics.plasm-ph","submitted_at":"2022-09-23T20:29:30Z","cross_cats_sorted":["physics.comp-ph"],"title_canon_sha256":"909e0781c7b74114775b96e7a0ffb235700a034fb8b46997d161178301c0f9b6","abstract_canon_sha256":"c132ee6b31770816dd533f8a254e6bdd715b2c26bbf4fd030354b6189c3aa001"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T05:30:13.669510Z","signature_b64":"rRhenLSEwY02YMFOjNcMiGD98QmshIzpPx3MnhzG8c9s/H+7OvcrNDY2X5NnYljcfVYV5uF7wYBjNBFmXwN1Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"57abba763b623bf6147c0ade9efc8603742a44ac79744f82e5144c081a5e6c1a","last_reissued_at":"2026-07-05T05:30:13.669028Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T05:30:13.669028Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Mapping the space of quasisymmetric stellarators using optimized near-axis expansion","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["physics.comp-ph"],"primary_cat":"physics.plasm-ph","authors_text":"Matt Landreman","submitted_at":"2022-09-23T20:29:30Z","abstract_excerpt":"A method is demonstrated to rapidly calculate the shapes and properties of quasi-axisymmetric and quasi-helically symmetric stellarators. In this approach, optimization is applied to the equations of magnetohydrodynamic equilibrium and quasisymmetry, expanded in the small distance from the magnetic axis, as formulated by Garren and Boozer [Phys. Fluids B, 3, 2805 (1991)]. Due to the reduction of the equations by the expansion, the computational cost is significantly reduced, to times on the order of 1 cpu-second, enabling wide and high-resolution scans over parameter space. In contrast to trad"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2209.11849","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2209.11849/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2209.11849","created_at":"2026-07-05T05:30:13.669085+00:00"},{"alias_kind":"arxiv_version","alias_value":"2209.11849v2","created_at":"2026-07-05T05:30:13.669085+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2209.11849","created_at":"2026-07-05T05:30:13.669085+00:00"},{"alias_kind":"pith_short_12","alias_value":"K6V3U5R3MI57","created_at":"2026-07-05T05:30:13.669085+00:00"},{"alias_kind":"pith_short_16","alias_value":"K6V3U5R3MI57MFD4","created_at":"2026-07-05T05:30:13.669085+00:00"},{"alias_kind":"pith_short_8","alias_value":"K6V3U5R3","created_at":"2026-07-05T05:30:13.669085+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2506.05170","citing_title":"Extending near-axis equilibria in DESC","ref_index":35,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/K6V3U5R3MI57MFD4BLPJ57EGAN","json":"https://pith.science/pith/K6V3U5R3MI57MFD4BLPJ57EGAN.json","graph_json":"https://pith.science/api/pith-number/K6V3U5R3MI57MFD4BLPJ57EGAN/graph.json","events_json":"https://pith.science/api/pith-number/K6V3U5R3MI57MFD4BLPJ57EGAN/events.json","paper":"https://pith.science/paper/K6V3U5R3"},"agent_actions":{"view_html":"https://pith.science/pith/K6V3U5R3MI57MFD4BLPJ57EGAN","download_json":"https://pith.science/pith/K6V3U5R3MI57MFD4BLPJ57EGAN.json","view_paper":"https://pith.science/paper/K6V3U5R3","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2209.11849&json=true","fetch_graph":"https://pith.science/api/pith-number/K6V3U5R3MI57MFD4BLPJ57EGAN/graph.json","fetch_events":"https://pith.science/api/pith-number/K6V3U5R3MI57MFD4BLPJ57EGAN/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/K6V3U5R3MI57MFD4BLPJ57EGAN/action/timestamp_anchor","attest_storage":"https://pith.science/pith/K6V3U5R3MI57MFD4BLPJ57EGAN/action/storage_attestation","attest_author":"https://pith.science/pith/K6V3U5R3MI57MFD4BLPJ57EGAN/action/author_attestation","sign_citation":"https://pith.science/pith/K6V3U5R3MI57MFD4BLPJ57EGAN/action/citation_signature","submit_replication":"https://pith.science/pith/K6V3U5R3MI57MFD4BLPJ57EGAN/action/replication_record"}},"created_at":"2026-07-05T05:30:13.669085+00:00","updated_at":"2026-07-05T05:30:13.669085+00:00"}