{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2006:3ZJAXB6WRBVNCM4SO7ZGHSKZZO","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":"4e4dc0eee22cde17876d0c7f34cf48323d0ab9b5798d8f9d40c0ecb7ac757132","cross_cats_sorted":["cond-mat.stat-mech","math.ST","stat.TH"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2006-01-25T01:08:58Z","title_canon_sha256":"a8735c56a5c007015905b38feb921f9f0bf7f91aa60ee5206219b2ad05d5ba21"},"schema_version":"1.0","source":{"id":"physics/0601192","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"physics/0601192","created_at":"2026-05-18T04:24:14Z"},{"alias_kind":"arxiv_version","alias_value":"physics/0601192v3","created_at":"2026-05-18T04:24:14Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.physics/0601192","created_at":"2026-05-18T04:24:14Z"},{"alias_kind":"pith_short_12","alias_value":"3ZJAXB6WRBVN","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_16","alias_value":"3ZJAXB6WRBVNCM4S","created_at":"2026-05-18T12:25:53Z"},{"alias_kind":"pith_short_8","alias_value":"3ZJAXB6W","created_at":"2026-05-18T12:25:53Z"}],"graph_snapshots":[{"event_id":"sha256:fbd709938f511b3341718a1f1aecf1e580076c20638311b7dc5c7bbd605e009d","target":"graph","created_at":"2026-05-18T04:24:14Z","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":"Scientists often re-invent things that were long known. Here we review these activities as related to the mechanism of producing power law distributions, originally proposed in 1922 by Yule to explain experimental data on the sizes of biological genera, collected by Willis. We also review the history of re-invention of closely related branching processes, random graphs and coagulation models.","authors_text":"M.V. Simkin, V.P. Roychowdhury","cross_cats":["cond-mat.stat-mech","math.ST","stat.TH"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2006-01-25T01:08:58Z","title":"Re-inventing Willis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"physics/0601192","kind":"arxiv","version":3},"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:c69c9b65d3610558620631c354d57951323ea9072a89560e1546a5d904993dcf","target":"record","created_at":"2026-05-18T04:24:14Z","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":"4e4dc0eee22cde17876d0c7f34cf48323d0ab9b5798d8f9d40c0ecb7ac757132","cross_cats_sorted":["cond-mat.stat-mech","math.ST","stat.TH"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2006-01-25T01:08:58Z","title_canon_sha256":"a8735c56a5c007015905b38feb921f9f0bf7f91aa60ee5206219b2ad05d5ba21"},"schema_version":"1.0","source":{"id":"physics/0601192","kind":"arxiv","version":3}},"canonical_sha256":"de520b87d6886ad1339277f263c959cb91a51c58d769df4d63ac83781ad4a9b9","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"de520b87d6886ad1339277f263c959cb91a51c58d769df4d63ac83781ad4a9b9","first_computed_at":"2026-05-18T04:24:14.536765Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:24:14.536765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EKTO2aYtAdQXthOVtC0qbO8FwYnEal8vicfyI+fEv69kJsuc2VUEO0++EPrF9L9ls1lA+hWDCAiRuCRuzI16BA==","signature_status":"signed_v1","signed_at":"2026-05-18T04:24:14.537422Z","signed_message":"canonical_sha256_bytes"},"source_id":"physics/0601192","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c69c9b65d3610558620631c354d57951323ea9072a89560e1546a5d904993dcf","sha256:fbd709938f511b3341718a1f1aecf1e580076c20638311b7dc5c7bbd605e009d"],"state_sha256":"0f938e6b6439f3beabde94c7e31663102ab178eebe36caca64882cc6b6eb23d3"}