{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:IDRLK6CC5DW2SZ5GA46ACW4D4N","short_pith_number":"pith:IDRLK6CC","canonical_record":{"source":{"id":"1707.07145","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2017-07-22T11:58:12Z","cross_cats_sorted":["cond-mat.stat-mech","physics.bio-ph"],"title_canon_sha256":"af2cd7a652c9adc107a53004bb5525d1ccf93adfa89bd7ebe82ae27e8bb21b0c","abstract_canon_sha256":"1fa55efb9399c1fc734f07b117b8c2822dcd217657903db5db7236286d1d09ae"},"schema_version":"1.0"},"canonical_sha256":"40e2b57842e8eda967a6073c015b83e372b89bc53f2c9485d8c21f7d00a0fbc8","source":{"kind":"arxiv","id":"1707.07145","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.07145","created_at":"2026-05-18T00:14:54Z"},{"alias_kind":"arxiv_version","alias_value":"1707.07145v2","created_at":"2026-05-18T00:14:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.07145","created_at":"2026-05-18T00:14:54Z"},{"alias_kind":"pith_short_12","alias_value":"IDRLK6CC5DW2","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"IDRLK6CC5DW2SZ5G","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"IDRLK6CC","created_at":"2026-05-18T12:31:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:IDRLK6CC5DW2SZ5GA46ACW4D4N","target":"record","payload":{"canonical_record":{"source":{"id":"1707.07145","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2017-07-22T11:58:12Z","cross_cats_sorted":["cond-mat.stat-mech","physics.bio-ph"],"title_canon_sha256":"af2cd7a652c9adc107a53004bb5525d1ccf93adfa89bd7ebe82ae27e8bb21b0c","abstract_canon_sha256":"1fa55efb9399c1fc734f07b117b8c2822dcd217657903db5db7236286d1d09ae"},"schema_version":"1.0"},"canonical_sha256":"40e2b57842e8eda967a6073c015b83e372b89bc53f2c9485d8c21f7d00a0fbc8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:14:54.729021Z","signature_b64":"FuRSmo67MdLhjMKhSkkpgZRtcnlRZepKCU8sAj43+PQqm3BRas/m8H+1pmrRslJwmlEIAq3EDEtwY+MLpNyWBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"40e2b57842e8eda967a6073c015b83e372b89bc53f2c9485d8c21f7d00a0fbc8","last_reissued_at":"2026-05-18T00:14:54.728532Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:14:54.728532Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1707.07145","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:14:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"XZC6RO33nD9Ie5dDejKVgwhz8ldD/8ZaVUK5BEp2sy443E7mnXlL1gZa1PXtskOhOJ6XO+9FjCJMz+8QUcm6AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:12:18.317462Z"},"content_sha256":"ca62fb787e69d4024a8ccda861e88c958c36464f54bacc355f23b32d0c16f542","schema_version":"1.0","event_id":"sha256:ca62fb787e69d4024a8ccda861e88c958c36464f54bacc355f23b32d0c16f542"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:IDRLK6CC5DW2SZ5GA46ACW4D4N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Reduction of a metapopulation genetic model to an effective one island model","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech","physics.bio-ph"],"primary_cat":"q-bio.PE","authors_text":"Alan J. McKane, C\\'esar Parra-Rojas","submitted_at":"2017-07-22T11:58:12Z","abstract_excerpt":"We explore a model of metapopulation genetics which is based on a more ecologically motivated approach than is frequently used in population genetics. The size of the population is regulated by competition between individuals, rather than by artificially imposing a fixed population size. The increased complexity of the model is managed by employing techniques often used in the physical sciences, namely exploiting time-scale separation to eliminate fast variables and then constructing an effective model from the slow modes. Remarkably, an initial model with 2$\\mathcal{D}$ variables, where $\\mat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.07145","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:14:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"KNgdKJtmf0OVXeJG2sHP8Av58durbFppiRfAJxv0DUdI2NfTe7MXNr4sonn28SMyg/cz6q/X/gtnnpCMRp+SAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T02:12:18.318119Z"},"content_sha256":"56519313126127ab52fc8a47dfe85e526756205144c38e6e47bdcdd0e2e9dc9d","schema_version":"1.0","event_id":"sha256:56519313126127ab52fc8a47dfe85e526756205144c38e6e47bdcdd0e2e9dc9d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/IDRLK6CC5DW2SZ5GA46ACW4D4N/bundle.json","state_url":"https://pith.science/pith/IDRLK6CC5DW2SZ5GA46ACW4D4N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/IDRLK6CC5DW2SZ5GA46ACW4D4N/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":"2026-05-27T02:12:18Z","links":{"resolver":"https://pith.science/pith/IDRLK6CC5DW2SZ5GA46ACW4D4N","bundle":"https://pith.science/pith/IDRLK6CC5DW2SZ5GA46ACW4D4N/bundle.json","state":"https://pith.science/pith/IDRLK6CC5DW2SZ5GA46ACW4D4N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/IDRLK6CC5DW2SZ5GA46ACW4D4N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:IDRLK6CC5DW2SZ5GA46ACW4D4N","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":"1fa55efb9399c1fc734f07b117b8c2822dcd217657903db5db7236286d1d09ae","cross_cats_sorted":["cond-mat.stat-mech","physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2017-07-22T11:58:12Z","title_canon_sha256":"af2cd7a652c9adc107a53004bb5525d1ccf93adfa89bd7ebe82ae27e8bb21b0c"},"schema_version":"1.0","source":{"id":"1707.07145","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1707.07145","created_at":"2026-05-18T00:14:54Z"},{"alias_kind":"arxiv_version","alias_value":"1707.07145v2","created_at":"2026-05-18T00:14:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1707.07145","created_at":"2026-05-18T00:14:54Z"},{"alias_kind":"pith_short_12","alias_value":"IDRLK6CC5DW2","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_16","alias_value":"IDRLK6CC5DW2SZ5G","created_at":"2026-05-18T12:31:21Z"},{"alias_kind":"pith_short_8","alias_value":"IDRLK6CC","created_at":"2026-05-18T12:31:21Z"}],"graph_snapshots":[{"event_id":"sha256:56519313126127ab52fc8a47dfe85e526756205144c38e6e47bdcdd0e2e9dc9d","target":"graph","created_at":"2026-05-18T00:14:54Z","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 explore a model of metapopulation genetics which is based on a more ecologically motivated approach than is frequently used in population genetics. The size of the population is regulated by competition between individuals, rather than by artificially imposing a fixed population size. The increased complexity of the model is managed by employing techniques often used in the physical sciences, namely exploiting time-scale separation to eliminate fast variables and then constructing an effective model from the slow modes. Remarkably, an initial model with 2$\\mathcal{D}$ variables, where $\\mat","authors_text":"Alan J. McKane, C\\'esar Parra-Rojas","cross_cats":["cond-mat.stat-mech","physics.bio-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2017-07-22T11:58:12Z","title":"Reduction of a metapopulation genetic model to an effective one island model"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.07145","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:ca62fb787e69d4024a8ccda861e88c958c36464f54bacc355f23b32d0c16f542","target":"record","created_at":"2026-05-18T00:14:54Z","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":"1fa55efb9399c1fc734f07b117b8c2822dcd217657903db5db7236286d1d09ae","cross_cats_sorted":["cond-mat.stat-mech","physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"q-bio.PE","submitted_at":"2017-07-22T11:58:12Z","title_canon_sha256":"af2cd7a652c9adc107a53004bb5525d1ccf93adfa89bd7ebe82ae27e8bb21b0c"},"schema_version":"1.0","source":{"id":"1707.07145","kind":"arxiv","version":2}},"canonical_sha256":"40e2b57842e8eda967a6073c015b83e372b89bc53f2c9485d8c21f7d00a0fbc8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"40e2b57842e8eda967a6073c015b83e372b89bc53f2c9485d8c21f7d00a0fbc8","first_computed_at":"2026-05-18T00:14:54.728532Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:14:54.728532Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FuRSmo67MdLhjMKhSkkpgZRtcnlRZepKCU8sAj43+PQqm3BRas/m8H+1pmrRslJwmlEIAq3EDEtwY+MLpNyWBw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:14:54.729021Z","signed_message":"canonical_sha256_bytes"},"source_id":"1707.07145","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ca62fb787e69d4024a8ccda861e88c958c36464f54bacc355f23b32d0c16f542","sha256:56519313126127ab52fc8a47dfe85e526756205144c38e6e47bdcdd0e2e9dc9d"],"state_sha256":"ae42064178b168d464cc6690bac0c847deb62ad77a727fa6a61ea7c329b323c8"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/mpTdfJYjK9DIUmCi4tqH2/4rAQLnRPklFkR+hhHIzQjcL8aLi8HUwM6DZWNNWCekEcf111W8H9cesPOg064Bw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T02:12:18.321899Z","bundle_sha256":"ba6a749a043b9a0e494afc32c4268a0ab88b157ec13d40a008ce9b69ba69536c"}}