{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:YDT6IAEI42HRD7D47F4Z3FXA52","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":"eaaad34cf60cfccc4a8b5ee501948b49337ef0a20201d2ffef4cbc80c4f9910b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-08-02T14:25:40Z","title_canon_sha256":"214e7af13da6e5e553d80929ac08bcffa448c06e2822ef3db73a9fbfe73199e3"},"schema_version":"1.0","source":{"id":"1208.0499","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1208.0499","created_at":"2026-05-18T01:55:23Z"},{"alias_kind":"arxiv_version","alias_value":"1208.0499v1","created_at":"2026-05-18T01:55:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1208.0499","created_at":"2026-05-18T01:55:23Z"},{"alias_kind":"pith_short_12","alias_value":"YDT6IAEI42HR","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_16","alias_value":"YDT6IAEI42HRD7D4","created_at":"2026-05-18T12:27:27Z"},{"alias_kind":"pith_short_8","alias_value":"YDT6IAEI","created_at":"2026-05-18T12:27:27Z"}],"graph_snapshots":[{"event_id":"sha256:dc8b3d1c3e6a0d4fdcc16d22acc9b0f8fdee3002b10fd97fa751fd7836db4261","target":"graph","created_at":"2026-05-18T01:55:23Z","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":"Particle shape is a key to the space-filling and strength properties of granular matter. We consider a shape parameter $\\eta$ describing the degree of distortion from a perfectly spherical shape. Encompassing most specific shape characteristics such as elongation, angularity and nonconvexity, $\\eta$ is a low-order but generic parameter that we used in a numerical benchmark test for a systematic investigation of shape-dependence in sheared granular packings composed of particles of different shapes. We find that the shear strength is an increasing function of $\\eta$ with nearly the same trend f","authors_text":"B. Saint-Cyr, C. Nouguier-Lehon, C. Voivret, E. Az\\'ema, F. Radja\\\"i, G. Combe, J.-Y. Delenne, K. Szarf, M. Chaze, P. Sornay, P. Villard, V. Richefeu","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-08-02T14:25:40Z","title":"Particle shape dependence in 2D granular media"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1208.0499","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:a6fb185965f2c051dabf86a196511d302b5693f6282a3704b28e2effd3f9bf41","target":"record","created_at":"2026-05-18T01:55:23Z","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":"eaaad34cf60cfccc4a8b5ee501948b49337ef0a20201d2ffef4cbc80c4f9910b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2012-08-02T14:25:40Z","title_canon_sha256":"214e7af13da6e5e553d80929ac08bcffa448c06e2822ef3db73a9fbfe73199e3"},"schema_version":"1.0","source":{"id":"1208.0499","kind":"arxiv","version":1}},"canonical_sha256":"c0e7e40088e68f11fc7cf9799d96e0ee98b4c8d62d2cc9eca1f77d31630349c3","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c0e7e40088e68f11fc7cf9799d96e0ee98b4c8d62d2cc9eca1f77d31630349c3","first_computed_at":"2026-05-18T01:55:23.803524Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:55:23.803524Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"37ec4rNEZ1tcHSerw7ggY6xUAHmg93O+FeLPua9dcY0T9tnMCV5ubqbzAnr9drUwcRJlcmdNXPpDSUFXaNFXDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:55:23.804034Z","signed_message":"canonical_sha256_bytes"},"source_id":"1208.0499","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a6fb185965f2c051dabf86a196511d302b5693f6282a3704b28e2effd3f9bf41","sha256:dc8b3d1c3e6a0d4fdcc16d22acc9b0f8fdee3002b10fd97fa751fd7836db4261"],"state_sha256":"f5afe5fbcdf8acb1ee2e000d6920e4cb751c1d8e612749793488b809a1c5b089"}