{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:ABJSWUF4Z2GDHRO66XRQZGYPDE","short_pith_number":"pith:ABJSWUF4","canonical_record":{"source":{"id":"1205.3352","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2012-05-15T12:50:49Z","cross_cats_sorted":["cond-mat.stat-mech","cs.SI"],"title_canon_sha256":"a13a65bf4a292cffc083beb464df6cb08ff2738e87f462bf92108586d9044958","abstract_canon_sha256":"cd12d3cedf33b9668263f8311f4a66756c159a2ee97fc20afbb917160dcabb79"},"schema_version":"1.0"},"canonical_sha256":"00532b50bcce8c33c5def5e30c9b0f191872f2c1d4814780fb033d8be345e7fc","source":{"kind":"arxiv","id":"1205.3352","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3352","created_at":"2026-05-18T03:45:00Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3352v1","created_at":"2026-05-18T03:45:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3352","created_at":"2026-05-18T03:45:00Z"},{"alias_kind":"pith_short_12","alias_value":"ABJSWUF4Z2GD","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"ABJSWUF4Z2GDHRO6","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"ABJSWUF4","created_at":"2026-05-18T12:26:58Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:ABJSWUF4Z2GDHRO66XRQZGYPDE","target":"record","payload":{"canonical_record":{"source":{"id":"1205.3352","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2012-05-15T12:50:49Z","cross_cats_sorted":["cond-mat.stat-mech","cs.SI"],"title_canon_sha256":"a13a65bf4a292cffc083beb464df6cb08ff2738e87f462bf92108586d9044958","abstract_canon_sha256":"cd12d3cedf33b9668263f8311f4a66756c159a2ee97fc20afbb917160dcabb79"},"schema_version":"1.0"},"canonical_sha256":"00532b50bcce8c33c5def5e30c9b0f191872f2c1d4814780fb033d8be345e7fc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:45:00.353012Z","signature_b64":"kHsREHI3sC3LfOgVjSmAyv1vXfcrSB/vOAL2diV9c92Cxhv9FxWFX5Usou3Kc85OdAbkcRH307WAIEYd1LHUCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"00532b50bcce8c33c5def5e30c9b0f191872f2c1d4814780fb033d8be345e7fc","last_reissued_at":"2026-05-18T03:45:00.352277Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:45:00.352277Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.3352","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":"2026-05-18T03:45:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bDDzFANIZahF9zSMYYYoNnY/fvXTuF+82ZriKnV0OO9Jk1aRRRfoC5l2j6saxsEPhK7sdtipb0u8J1GiuS+zDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T20:46:01.797569Z"},"content_sha256":"c7b63fda37ef171f67d3d597f847baa152274926f21998c71f2099547b7f3436","schema_version":"1.0","event_id":"sha256:c7b63fda37ef171f67d3d597f847baa152274926f21998c71f2099547b7f3436"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:ABJSWUF4Z2GDHRO66XRQZGYPDE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Revisiting the effect of external fields in Axelrod's model of social dynamics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech","cs.SI"],"primary_cat":"physics.soc-ph","authors_text":"Jose F. Fontanari, Lucas R. Peres","submitted_at":"2012-05-15T12:50:49Z","abstract_excerpt":"The study of the effects of spatially uniform fields on the steady-state properties of Axelrod's model has yielded plenty of controversial results. Here we re-examine the impact of this type of field for a selection of parameters such that the field-free steady state of the model is heterogeneous or multicultural. Analyses of both one and two-dimensional versions of Axelrod's model indicate that, contrary to previous claims in the literature, the steady state remains heterogeneous regardless of the value of the field strength. Turning on the field leads to a discontinuous decrease on the numbe"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3352","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":"2026-05-18T03:45:00Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kQiOBTzgxl02plg88UVwqPB96I1DF8erggvbfOaC2lX9vTiWHXVu6Y/naH1EiqdhVIHaUhY91tRYgWgx2pyhAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T20:46:01.797923Z"},"content_sha256":"56bc6115f20bdd20ad343f005ed589319fd86f088b7042fdb2ef0b5c1480ebfa","schema_version":"1.0","event_id":"sha256:56bc6115f20bdd20ad343f005ed589319fd86f088b7042fdb2ef0b5c1480ebfa"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ABJSWUF4Z2GDHRO66XRQZGYPDE/bundle.json","state_url":"https://pith.science/pith/ABJSWUF4Z2GDHRO66XRQZGYPDE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ABJSWUF4Z2GDHRO66XRQZGYPDE/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":"2026-06-27T20:46:01Z","links":{"resolver":"https://pith.science/pith/ABJSWUF4Z2GDHRO66XRQZGYPDE","bundle":"https://pith.science/pith/ABJSWUF4Z2GDHRO66XRQZGYPDE/bundle.json","state":"https://pith.science/pith/ABJSWUF4Z2GDHRO66XRQZGYPDE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ABJSWUF4Z2GDHRO66XRQZGYPDE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:ABJSWUF4Z2GDHRO66XRQZGYPDE","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":"cd12d3cedf33b9668263f8311f4a66756c159a2ee97fc20afbb917160dcabb79","cross_cats_sorted":["cond-mat.stat-mech","cs.SI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2012-05-15T12:50:49Z","title_canon_sha256":"a13a65bf4a292cffc083beb464df6cb08ff2738e87f462bf92108586d9044958"},"schema_version":"1.0","source":{"id":"1205.3352","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.3352","created_at":"2026-05-18T03:45:00Z"},{"alias_kind":"arxiv_version","alias_value":"1205.3352v1","created_at":"2026-05-18T03:45:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.3352","created_at":"2026-05-18T03:45:00Z"},{"alias_kind":"pith_short_12","alias_value":"ABJSWUF4Z2GD","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_16","alias_value":"ABJSWUF4Z2GDHRO6","created_at":"2026-05-18T12:26:58Z"},{"alias_kind":"pith_short_8","alias_value":"ABJSWUF4","created_at":"2026-05-18T12:26:58Z"}],"graph_snapshots":[{"event_id":"sha256:56bc6115f20bdd20ad343f005ed589319fd86f088b7042fdb2ef0b5c1480ebfa","target":"graph","created_at":"2026-05-18T03:45:00Z","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 study of the effects of spatially uniform fields on the steady-state properties of Axelrod's model has yielded plenty of controversial results. Here we re-examine the impact of this type of field for a selection of parameters such that the field-free steady state of the model is heterogeneous or multicultural. Analyses of both one and two-dimensional versions of Axelrod's model indicate that, contrary to previous claims in the literature, the steady state remains heterogeneous regardless of the value of the field strength. Turning on the field leads to a discontinuous decrease on the numbe","authors_text":"Jose F. Fontanari, Lucas R. Peres","cross_cats":["cond-mat.stat-mech","cs.SI"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2012-05-15T12:50:49Z","title":"Revisiting the effect of external fields in Axelrod's model of social dynamics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.3352","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:c7b63fda37ef171f67d3d597f847baa152274926f21998c71f2099547b7f3436","target":"record","created_at":"2026-05-18T03:45:00Z","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":"cd12d3cedf33b9668263f8311f4a66756c159a2ee97fc20afbb917160dcabb79","cross_cats_sorted":["cond-mat.stat-mech","cs.SI"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.soc-ph","submitted_at":"2012-05-15T12:50:49Z","title_canon_sha256":"a13a65bf4a292cffc083beb464df6cb08ff2738e87f462bf92108586d9044958"},"schema_version":"1.0","source":{"id":"1205.3352","kind":"arxiv","version":1}},"canonical_sha256":"00532b50bcce8c33c5def5e30c9b0f191872f2c1d4814780fb033d8be345e7fc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"00532b50bcce8c33c5def5e30c9b0f191872f2c1d4814780fb033d8be345e7fc","first_computed_at":"2026-05-18T03:45:00.352277Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:45:00.352277Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"kHsREHI3sC3LfOgVjSmAyv1vXfcrSB/vOAL2diV9c92Cxhv9FxWFX5Usou3Kc85OdAbkcRH307WAIEYd1LHUCg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:45:00.353012Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.3352","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c7b63fda37ef171f67d3d597f847baa152274926f21998c71f2099547b7f3436","sha256:56bc6115f20bdd20ad343f005ed589319fd86f088b7042fdb2ef0b5c1480ebfa"],"state_sha256":"8761fe4e7f5f12bec58f7da59a1c2232ad7011ba7f09d25cc81296332f0642c6"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1fLrn2EZkfZrL0MZIb8Bm1uLdMAq0618kGrvgIzmVQLv1kLwglh5vrXwR7iUwQsk1lWrgfDhAbcfn7OWOzJYBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T20:46:01.799806Z","bundle_sha256":"79aff58cccd7722418d9c0f3729ec810453b0703095fe35d21c8079214c49317"}}