{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:OMI3BI7O5DG7DQEC45V3PXTB3X","short_pith_number":"pith:OMI3BI7O","canonical_record":{"source":{"id":"1309.5796","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2013-09-23T13:24:09Z","cross_cats_sorted":[],"title_canon_sha256":"f0f0ad9a4830d18cd37ffe3d58bdfee3bf6afaca663690ae29bf311b4cd97696","abstract_canon_sha256":"9a2d672ad3e3fe77ab0cee7bb96345f696334fab635143d2c38c17bcd32eea54"},"schema_version":"1.0"},"canonical_sha256":"7311b0a3eee8cdf1c082e76bb7de61dde030a5c67ee62f8634236d9e58a89086","source":{"kind":"arxiv","id":"1309.5796","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.5796","created_at":"2026-05-18T03:00:25Z"},{"alias_kind":"arxiv_version","alias_value":"1309.5796v1","created_at":"2026-05-18T03:00:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.5796","created_at":"2026-05-18T03:00:25Z"},{"alias_kind":"pith_short_12","alias_value":"OMI3BI7O5DG7","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OMI3BI7O5DG7DQEC","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OMI3BI7O","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:OMI3BI7O5DG7DQEC45V3PXTB3X","target":"record","payload":{"canonical_record":{"source":{"id":"1309.5796","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2013-09-23T13:24:09Z","cross_cats_sorted":[],"title_canon_sha256":"f0f0ad9a4830d18cd37ffe3d58bdfee3bf6afaca663690ae29bf311b4cd97696","abstract_canon_sha256":"9a2d672ad3e3fe77ab0cee7bb96345f696334fab635143d2c38c17bcd32eea54"},"schema_version":"1.0"},"canonical_sha256":"7311b0a3eee8cdf1c082e76bb7de61dde030a5c67ee62f8634236d9e58a89086","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:00:25.847793Z","signature_b64":"/8jJUeWfjAhJTjHELt1uZIYfbWfioNo96EYMZvoRc4OQT1arpKO5Xcu9Ds4FyNwLB8eg9ouvReiSgn+RdCSNBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7311b0a3eee8cdf1c082e76bb7de61dde030a5c67ee62f8634236d9e58a89086","last_reissued_at":"2026-05-18T03:00:25.847021Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:00:25.847021Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.5796","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:00:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"G5rwtUhC9wa0hXv4O+G1HmBaxypJMSt7emR7FxcVvvpCMwMXni5yW/GXy2Utzwqnezg4SqleNyxhSIuwCPy1CQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T12:30:41.572749Z"},"content_sha256":"baea99038847e1f04e5eb6f1662b3f35c5ccd7ba09bb6a0b67e52ba2be7b0216","schema_version":"1.0","event_id":"sha256:baea99038847e1f04e5eb6f1662b3f35c5ccd7ba09bb6a0b67e52ba2be7b0216"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:OMI3BI7O5DG7DQEC45V3PXTB3X","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"LaBonte's method revisited: An effective steepest descent method for micromagnetic energy minimization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.comp-ph","authors_text":"Franz Reichel, Hans Peter Stimming, Lukas Exl, Norbert J. Mauser, Simon Bance, Thomas Schrefl","submitted_at":"2013-09-23T13:24:09Z","abstract_excerpt":"We present a steepest descent energy minimization scheme for micromagnetics. The method searches on a curve that lies on the sphere which keeps the magnitude of the magnetization vector constant. The step size is selected according to a modified Barzilai-Borwein method. Standard linear tetrahedral finite elements are used for space discretization. For the computation of static hysteresis loops the steepest descent minimizer is faster than a Landau-Lifshitz micromagnetic solver by more than a factor of two. The speed up on a graphic processor is 4.8 as compared to the fastest single-core CPU im"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.5796","kind":"arxiv","version":1},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T03:00:25Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0TRROSHQhOJiYXTrDii3UMGBhu/zFGU5650Zs5IYaDnLkVYU0y+HJm/ezwWxc60RnJ4qdHJx2bQawObyQvS/AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T12:30:41.573463Z"},"content_sha256":"4b8f5adce253a0391ffbdc2c7110f8d165613602f701b8d48529bf59bfcbdf74","schema_version":"1.0","event_id":"sha256:4b8f5adce253a0391ffbdc2c7110f8d165613602f701b8d48529bf59bfcbdf74"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OMI3BI7O5DG7DQEC45V3PXTB3X/bundle.json","state_url":"https://pith.science/pith/OMI3BI7O5DG7DQEC45V3PXTB3X/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OMI3BI7O5DG7DQEC45V3PXTB3X/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-03T12:30:41Z","links":{"resolver":"https://pith.science/pith/OMI3BI7O5DG7DQEC45V3PXTB3X","bundle":"https://pith.science/pith/OMI3BI7O5DG7DQEC45V3PXTB3X/bundle.json","state":"https://pith.science/pith/OMI3BI7O5DG7DQEC45V3PXTB3X/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OMI3BI7O5DG7DQEC45V3PXTB3X/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:OMI3BI7O5DG7DQEC45V3PXTB3X","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":"9a2d672ad3e3fe77ab0cee7bb96345f696334fab635143d2c38c17bcd32eea54","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2013-09-23T13:24:09Z","title_canon_sha256":"f0f0ad9a4830d18cd37ffe3d58bdfee3bf6afaca663690ae29bf311b4cd97696"},"schema_version":"1.0","source":{"id":"1309.5796","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.5796","created_at":"2026-05-18T03:00:25Z"},{"alias_kind":"arxiv_version","alias_value":"1309.5796v1","created_at":"2026-05-18T03:00:25Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.5796","created_at":"2026-05-18T03:00:25Z"},{"alias_kind":"pith_short_12","alias_value":"OMI3BI7O5DG7","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OMI3BI7O5DG7DQEC","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OMI3BI7O","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:4b8f5adce253a0391ffbdc2c7110f8d165613602f701b8d48529bf59bfcbdf74","target":"graph","created_at":"2026-05-18T03:00:25Z","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 present a steepest descent energy minimization scheme for micromagnetics. The method searches on a curve that lies on the sphere which keeps the magnitude of the magnetization vector constant. The step size is selected according to a modified Barzilai-Borwein method. Standard linear tetrahedral finite elements are used for space discretization. For the computation of static hysteresis loops the steepest descent minimizer is faster than a Landau-Lifshitz micromagnetic solver by more than a factor of two. The speed up on a graphic processor is 4.8 as compared to the fastest single-core CPU im","authors_text":"Franz Reichel, Hans Peter Stimming, Lukas Exl, Norbert J. Mauser, Simon Bance, Thomas Schrefl","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2013-09-23T13:24:09Z","title":"LaBonte's method revisited: An effective steepest descent method for micromagnetic energy minimization"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.5796","kind":"arxiv","version":1},"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:baea99038847e1f04e5eb6f1662b3f35c5ccd7ba09bb6a0b67e52ba2be7b0216","target":"record","created_at":"2026-05-18T03:00:25Z","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":"9a2d672ad3e3fe77ab0cee7bb96345f696334fab635143d2c38c17bcd32eea54","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.comp-ph","submitted_at":"2013-09-23T13:24:09Z","title_canon_sha256":"f0f0ad9a4830d18cd37ffe3d58bdfee3bf6afaca663690ae29bf311b4cd97696"},"schema_version":"1.0","source":{"id":"1309.5796","kind":"arxiv","version":1}},"canonical_sha256":"7311b0a3eee8cdf1c082e76bb7de61dde030a5c67ee62f8634236d9e58a89086","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7311b0a3eee8cdf1c082e76bb7de61dde030a5c67ee62f8634236d9e58a89086","first_computed_at":"2026-05-18T03:00:25.847021Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:00:25.847021Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"/8jJUeWfjAhJTjHELt1uZIYfbWfioNo96EYMZvoRc4OQT1arpKO5Xcu9Ds4FyNwLB8eg9ouvReiSgn+RdCSNBg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:00:25.847793Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.5796","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:baea99038847e1f04e5eb6f1662b3f35c5ccd7ba09bb6a0b67e52ba2be7b0216","sha256:4b8f5adce253a0391ffbdc2c7110f8d165613602f701b8d48529bf59bfcbdf74"],"state_sha256":"e73e899c933cae9a1bc639b67f8c85e7d009cb246ce0f6aa773712deac9f17b0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ssU0vUuaIeQL6c4i/gYVcWr/9691lexiTuugHfoTZL6ZQJy7pBcLkuEq4iVnw1Q8RpmGL+1uYRRQupOZ7OQMAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T12:30:41.576817Z","bundle_sha256":"4a56edd239eec6c42c6adc7edfa61d78f855d91d41fee25487b57978ff67df91"}}