{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2020:YX3GQJI6VP37E7HAK4KTVKQA4C","short_pith_number":"pith:YX3GQJI6","schema_version":"1.0","canonical_sha256":"c5f668251eabf7f27ce057153aaa00e096f278a7e263f126e58dd5d601ba9aa1","source":{"kind":"arxiv","id":"2006.15174","version":2},"attestation_state":"computed","paper":{"title":"Beyond Quality and Quantity: Contact Distribution Encodes Frictional Strength","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.geo-ph"],"primary_cat":"cond-mat.soft","authors_text":"Michael P Brenner, Sam Dillavou, Shmuel M Rubinstein, Yohai Bar Sinai","submitted_at":"2020-06-26T18:59:55Z","abstract_excerpt":"Classically, the quantity of contact area $A_R$ between two bodies is considered a proxy for the force of friction. However, bond density across the interface - quality of contact - is also relevant, and contemporary debate often centers around the relative importance of these two factors. In this work, we demonstrate that a third factor, often overlooked, plays a significant role in static frictional strength: the distribution of contact. We perform static friction measurements, $\\mu$, on three pairs of solid blocks while imaging the contact plane. By using linear regression on hundreds of im"},"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":"2006.15174","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2020-06-26T18:59:55Z","cross_cats_sorted":["physics.geo-ph"],"title_canon_sha256":"af9426c52e9f0aebfe3eb422a776a6322134845cf9bcdb153e15b328c48539e3","abstract_canon_sha256":"9f3d073b4d0a7722db6412f4614fe1c7e24f1dd9378802c65458e082abd381fe"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:55:35.228888Z","signature_b64":"h0+SBjrCTiaC97o+4PxeQuPe0UJkLv6eWlr5N8M5hrSfGTct6+rRXWN5eM1YEpQA1r88aiF4NVTJsPLx/6tNDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"c5f668251eabf7f27ce057153aaa00e096f278a7e263f126e58dd5d601ba9aa1","last_reissued_at":"2026-07-05T04:55:35.228480Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:55:35.228480Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Beyond Quality and Quantity: Contact Distribution Encodes Frictional Strength","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.geo-ph"],"primary_cat":"cond-mat.soft","authors_text":"Michael P Brenner, Sam Dillavou, Shmuel M Rubinstein, Yohai Bar Sinai","submitted_at":"2020-06-26T18:59:55Z","abstract_excerpt":"Classically, the quantity of contact area $A_R$ between two bodies is considered a proxy for the force of friction. However, bond density across the interface - quality of contact - is also relevant, and contemporary debate often centers around the relative importance of these two factors. In this work, we demonstrate that a third factor, often overlooked, plays a significant role in static frictional strength: the distribution of contact. We perform static friction measurements, $\\mu$, on three pairs of solid blocks while imaging the contact plane. By using linear regression on hundreds of im"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.15174","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2006.15174/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2006.15174","created_at":"2026-07-05T04:55:35.228545+00:00"},{"alias_kind":"arxiv_version","alias_value":"2006.15174v2","created_at":"2026-07-05T04:55:35.228545+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.15174","created_at":"2026-07-05T04:55:35.228545+00:00"},{"alias_kind":"pith_short_12","alias_value":"YX3GQJI6VP37","created_at":"2026-07-05T04:55:35.228545+00:00"},{"alias_kind":"pith_short_16","alias_value":"YX3GQJI6VP37E7HA","created_at":"2026-07-05T04:55:35.228545+00:00"},{"alias_kind":"pith_short_8","alias_value":"YX3GQJI6","created_at":"2026-07-05T04:55:35.228545+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/YX3GQJI6VP37E7HAK4KTVKQA4C","json":"https://pith.science/pith/YX3GQJI6VP37E7HAK4KTVKQA4C.json","graph_json":"https://pith.science/api/pith-number/YX3GQJI6VP37E7HAK4KTVKQA4C/graph.json","events_json":"https://pith.science/api/pith-number/YX3GQJI6VP37E7HAK4KTVKQA4C/events.json","paper":"https://pith.science/paper/YX3GQJI6"},"agent_actions":{"view_html":"https://pith.science/pith/YX3GQJI6VP37E7HAK4KTVKQA4C","download_json":"https://pith.science/pith/YX3GQJI6VP37E7HAK4KTVKQA4C.json","view_paper":"https://pith.science/paper/YX3GQJI6","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2006.15174&json=true","fetch_graph":"https://pith.science/api/pith-number/YX3GQJI6VP37E7HAK4KTVKQA4C/graph.json","fetch_events":"https://pith.science/api/pith-number/YX3GQJI6VP37E7HAK4KTVKQA4C/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/YX3GQJI6VP37E7HAK4KTVKQA4C/action/timestamp_anchor","attest_storage":"https://pith.science/pith/YX3GQJI6VP37E7HAK4KTVKQA4C/action/storage_attestation","attest_author":"https://pith.science/pith/YX3GQJI6VP37E7HAK4KTVKQA4C/action/author_attestation","sign_citation":"https://pith.science/pith/YX3GQJI6VP37E7HAK4KTVKQA4C/action/citation_signature","submit_replication":"https://pith.science/pith/YX3GQJI6VP37E7HAK4KTVKQA4C/action/replication_record"}},"created_at":"2026-07-05T04:55:35.228545+00:00","updated_at":"2026-07-05T04:55:35.228545+00:00"}