{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:KB4NAXDHNANSHXRYJZZI3WRMNM","short_pith_number":"pith:KB4NAXDH","schema_version":"1.0","canonical_sha256":"5078d05c67681b23de384e728dda2c6b04028a5f7e63d29d2c3acc6c687dc571","source":{"kind":"arxiv","id":"1806.06529","version":1},"attestation_state":"computed","paper":{"title":"Understanding the instability of a vibrated granular monolayer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.stat-mech","authors_text":"J. Javier Brey, M. I. Garc\\'ia de Soria, P. Maynar","submitted_at":"2018-06-18T07:36:45Z","abstract_excerpt":"We investigate the dynamics of an ensemble of inelastic hard spheres confined between two horizontal plates separated a distance smaller than twice the diameter of the particles, in such a way that the system is quasi-two-dimensional. The bottom wall is vibrating and, therefore, it injects energy into the system in the vertical direction and a stationary state is reached. It is found that, if the size of the plates is small enough, the stationary state is homogeneous. Otherwise, a cluster of particles is developed. The instability is understood by using some effective hydrodynamic equations in"},"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":"1806.06529","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.stat-mech","submitted_at":"2018-06-18T07:36:45Z","cross_cats_sorted":[],"title_canon_sha256":"8b14299379a5bea4d13c4e71fe29eb0fd5a102d5d5fd6f8f3d1063b6641fba09","abstract_canon_sha256":"a3189c76b67caa6c46366e02f8f02c172c8454bbe47258652ef2e42082594dfb"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:50:13.380747Z","signature_b64":"CsVZpuOoB31wddj/uhcILn12+9kuIZfFP43I/dc0j0Fyk9ECQKHbv2tdKCphMKgi1OBowaM8qVkFPetOY62jAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5078d05c67681b23de384e728dda2c6b04028a5f7e63d29d2c3acc6c687dc571","last_reissued_at":"2026-05-17T23:50:13.380139Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:50:13.380139Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Understanding the instability of a vibrated granular monolayer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.stat-mech","authors_text":"J. Javier Brey, M. I. Garc\\'ia de Soria, P. Maynar","submitted_at":"2018-06-18T07:36:45Z","abstract_excerpt":"We investigate the dynamics of an ensemble of inelastic hard spheres confined between two horizontal plates separated a distance smaller than twice the diameter of the particles, in such a way that the system is quasi-two-dimensional. The bottom wall is vibrating and, therefore, it injects energy into the system in the vertical direction and a stationary state is reached. It is found that, if the size of the plates is small enough, the stationary state is homogeneous. Otherwise, a cluster of particles is developed. The instability is understood by using some effective hydrodynamic equations in"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1806.06529","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":"1806.06529","created_at":"2026-05-17T23:50:13.380247+00:00"},{"alias_kind":"arxiv_version","alias_value":"1806.06529v1","created_at":"2026-05-17T23:50:13.380247+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1806.06529","created_at":"2026-05-17T23:50:13.380247+00:00"},{"alias_kind":"pith_short_12","alias_value":"KB4NAXDHNANS","created_at":"2026-05-18T12:32:33.847187+00:00"},{"alias_kind":"pith_short_16","alias_value":"KB4NAXDHNANSHXRY","created_at":"2026-05-18T12:32:33.847187+00:00"},{"alias_kind":"pith_short_8","alias_value":"KB4NAXDH","created_at":"2026-05-18T12:32:33.847187+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/KB4NAXDHNANSHXRYJZZI3WRMNM","json":"https://pith.science/pith/KB4NAXDHNANSHXRYJZZI3WRMNM.json","graph_json":"https://pith.science/api/pith-number/KB4NAXDHNANSHXRYJZZI3WRMNM/graph.json","events_json":"https://pith.science/api/pith-number/KB4NAXDHNANSHXRYJZZI3WRMNM/events.json","paper":"https://pith.science/paper/KB4NAXDH"},"agent_actions":{"view_html":"https://pith.science/pith/KB4NAXDHNANSHXRYJZZI3WRMNM","download_json":"https://pith.science/pith/KB4NAXDHNANSHXRYJZZI3WRMNM.json","view_paper":"https://pith.science/paper/KB4NAXDH","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1806.06529&json=true","fetch_graph":"https://pith.science/api/pith-number/KB4NAXDHNANSHXRYJZZI3WRMNM/graph.json","fetch_events":"https://pith.science/api/pith-number/KB4NAXDHNANSHXRYJZZI3WRMNM/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/KB4NAXDHNANSHXRYJZZI3WRMNM/action/timestamp_anchor","attest_storage":"https://pith.science/pith/KB4NAXDHNANSHXRYJZZI3WRMNM/action/storage_attestation","attest_author":"https://pith.science/pith/KB4NAXDHNANSHXRYJZZI3WRMNM/action/author_attestation","sign_citation":"https://pith.science/pith/KB4NAXDHNANSHXRYJZZI3WRMNM/action/citation_signature","submit_replication":"https://pith.science/pith/KB4NAXDHNANSHXRYJZZI3WRMNM/action/replication_record"}},"created_at":"2026-05-17T23:50:13.380247+00:00","updated_at":"2026-05-17T23:50:13.380247+00:00"}