{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:XD2XISYUZXTN3M6ED2M6L27SJH","short_pith_number":"pith:XD2XISYU","schema_version":"1.0","canonical_sha256":"b8f5744b14cde6ddb3c41e99e5ebf249d2e56f798832cce00e617f847c0598ec","source":{"kind":"arxiv","id":"1809.06137","version":1},"attestation_state":"computed","paper":{"title":"Reaction fronts in persistent random walks with demographic stochasticity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"physics.bio-ph","authors_text":"Angelo Vulpiani, Davide Vergni, Massimo Cencini, Stefano Berti","submitted_at":"2018-09-17T11:34:12Z","abstract_excerpt":"Standard Reaction-Diffusion (RD) systems are characterized by infinite velocities and no persistence in the movement of individuals, two conditions that are violated when considering living organisms. Here we consider a discrete particle model in which individuals move following a persistent random walk with finite speed and grow with logistic dynamics. We show that when the number of individuals is very large, the individual-based model is well described by the continuous Reactive Cattaneo Equation (RCE), but for smaller values of the carrying capacity important finite-population effects aris"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1809.06137","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.bio-ph","submitted_at":"2018-09-17T11:34:12Z","cross_cats_sorted":["cond-mat.stat-mech"],"title_canon_sha256":"1bcdcc0165d56908d8d6b709883af10327b46b3383034ffe25c55775516ccd0e","abstract_canon_sha256":"222af35b9ce9a44b3e7d48d10bbf666e334fc163c46a2384c54ae2c637e6d787"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:56:47.200641Z","signature_b64":"PPk1sMGfGOWlvplOw0qEcpQRqyDzuEJto8TgKP2oG0d1fHMOFSQAnVmHQxoynNqex+symdZSj9s17PwzQrlcBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b8f5744b14cde6ddb3c41e99e5ebf249d2e56f798832cce00e617f847c0598ec","last_reissued_at":"2026-05-17T23:56:47.200098Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:56:47.200098Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Reaction fronts in persistent random walks with demographic stochasticity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.stat-mech"],"primary_cat":"physics.bio-ph","authors_text":"Angelo Vulpiani, Davide Vergni, Massimo Cencini, Stefano Berti","submitted_at":"2018-09-17T11:34:12Z","abstract_excerpt":"Standard Reaction-Diffusion (RD) systems are characterized by infinite velocities and no persistence in the movement of individuals, two conditions that are violated when considering living organisms. Here we consider a discrete particle model in which individuals move following a persistent random walk with finite speed and grow with logistic dynamics. We show that when the number of individuals is very large, the individual-based model is well described by the continuous Reactive Cattaneo Equation (RCE), but for smaller values of the carrying capacity important finite-population effects aris"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1809.06137","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1809.06137","created_at":"2026-05-17T23:56:47.200174+00:00"},{"alias_kind":"arxiv_version","alias_value":"1809.06137v1","created_at":"2026-05-17T23:56:47.200174+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1809.06137","created_at":"2026-05-17T23:56:47.200174+00:00"},{"alias_kind":"pith_short_12","alias_value":"XD2XISYUZXTN","created_at":"2026-05-18T12:33:01.666342+00:00"},{"alias_kind":"pith_short_16","alias_value":"XD2XISYUZXTN3M6E","created_at":"2026-05-18T12:33:01.666342+00:00"},{"alias_kind":"pith_short_8","alias_value":"XD2XISYU","created_at":"2026-05-18T12:33:01.666342+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/XD2XISYUZXTN3M6ED2M6L27SJH","json":"https://pith.science/pith/XD2XISYUZXTN3M6ED2M6L27SJH.json","graph_json":"https://pith.science/api/pith-number/XD2XISYUZXTN3M6ED2M6L27SJH/graph.json","events_json":"https://pith.science/api/pith-number/XD2XISYUZXTN3M6ED2M6L27SJH/events.json","paper":"https://pith.science/paper/XD2XISYU"},"agent_actions":{"view_html":"https://pith.science/pith/XD2XISYUZXTN3M6ED2M6L27SJH","download_json":"https://pith.science/pith/XD2XISYUZXTN3M6ED2M6L27SJH.json","view_paper":"https://pith.science/paper/XD2XISYU","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1809.06137&json=true","fetch_graph":"https://pith.science/api/pith-number/XD2XISYUZXTN3M6ED2M6L27SJH/graph.json","fetch_events":"https://pith.science/api/pith-number/XD2XISYUZXTN3M6ED2M6L27SJH/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/XD2XISYUZXTN3M6ED2M6L27SJH/action/timestamp_anchor","attest_storage":"https://pith.science/pith/XD2XISYUZXTN3M6ED2M6L27SJH/action/storage_attestation","attest_author":"https://pith.science/pith/XD2XISYUZXTN3M6ED2M6L27SJH/action/author_attestation","sign_citation":"https://pith.science/pith/XD2XISYUZXTN3M6ED2M6L27SJH/action/citation_signature","submit_replication":"https://pith.science/pith/XD2XISYUZXTN3M6ED2M6L27SJH/action/replication_record"}},"created_at":"2026-05-17T23:56:47.200174+00:00","updated_at":"2026-05-17T23:56:47.200174+00:00"}