{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:VK7KTGWLMW2UUDJESNG2JBP4QG","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":"00f44d69f8d7e17db6f5a4c47f2a1755c839fd579e60ca08aff5f9d98ec6557a","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-12-20T00:57:20Z","title_canon_sha256":"80a7251d4867673fed6fd34c6b7952397a1e6fddcaac41aa1378184788b2735f"},"schema_version":"1.0","source":{"id":"1712.07281","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1712.07281","created_at":"2026-05-18T00:14:34Z"},{"alias_kind":"arxiv_version","alias_value":"1712.07281v2","created_at":"2026-05-18T00:14:34Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1712.07281","created_at":"2026-05-18T00:14:34Z"},{"alias_kind":"pith_short_12","alias_value":"VK7KTGWLMW2U","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_16","alias_value":"VK7KTGWLMW2UUDJE","created_at":"2026-05-18T12:31:49Z"},{"alias_kind":"pith_short_8","alias_value":"VK7KTGWL","created_at":"2026-05-18T12:31:49Z"}],"graph_snapshots":[{"event_id":"sha256:02dfe15ffc4ec265700266b0888056ca10a8021a50021571ffc108df2b4a97ac","target":"graph","created_at":"2026-05-18T00:14:34Z","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 Mathisson-Papapetrou-Dixon (MPD) equations, providing the \"pole-dipole\" description of spinning test particles in general relativity, have to be supplemented by a condition specifying the worldline that will represent the history of the studied body. It has long been thought that the Mathisson-Pirani (MP) spin condition -- unlike other major choices made in the literature -- does not yield an explicit momentum-velocity relation. We derive here the desired (and very simple) relation and show that it is in fact equivalent to the MP condition. We clarify the apparent paradox between the exist","authors_text":"Georgios Lukes-Gerakopoulos, L. Filipe O. Costa, Old\\v{r}ich Semer\\'ak","cross_cats":["hep-th"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-12-20T00:57:20Z","title":"Spinning particles in general relativity: Momentum-velocity relation for the Mathisson-Pirani spin condition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1712.07281","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:ceffbe4e64bbb7bb29897e64e12e6e49b544e8281c19f69b736d90ff004a1af6","target":"record","created_at":"2026-05-18T00:14:34Z","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":"00f44d69f8d7e17db6f5a4c47f2a1755c839fd579e60ca08aff5f9d98ec6557a","cross_cats_sorted":["hep-th"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2017-12-20T00:57:20Z","title_canon_sha256":"80a7251d4867673fed6fd34c6b7952397a1e6fddcaac41aa1378184788b2735f"},"schema_version":"1.0","source":{"id":"1712.07281","kind":"arxiv","version":2}},"canonical_sha256":"aabea99acb65b54a0d24934da485fc8180c4f1e8acdafcd1fbbc1467f3261f4f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aabea99acb65b54a0d24934da485fc8180c4f1e8acdafcd1fbbc1467f3261f4f","first_computed_at":"2026-05-18T00:14:34.165622Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:14:34.165622Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"3zPyphe2N3ZpJo5ntrnw/v7hH4lbrvbqMQL4bOd82B/SccUm4M6qcWdcNpx4qTm1khTW0yqU1tFkatMPZVMkCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:14:34.166139Z","signed_message":"canonical_sha256_bytes"},"source_id":"1712.07281","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ceffbe4e64bbb7bb29897e64e12e6e49b544e8281c19f69b736d90ff004a1af6","sha256:02dfe15ffc4ec265700266b0888056ca10a8021a50021571ffc108df2b4a97ac"],"state_sha256":"e13198a8bceb8e56c5598948ea76ab618db0727210f89b55fcb04f1f914c9a33"}