{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2008:LC7WAZ4Q7GIAKB4BOZ4BKSFNEE","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":"26ad95a04a3f9ee0c6a70fc11f30f12c0c570babfb820ce56c81cdc692dbd7de","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2008-07-01T10:02:56Z","title_canon_sha256":"96322b90ec0dffecf2719f7edaa6dd33f3e9176548afe275dcbbe70d3e838aad"},"schema_version":"1.0","source":{"id":"0807.0097","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0807.0097","created_at":"2026-05-18T04:24:04Z"},{"alias_kind":"arxiv_version","alias_value":"0807.0097v2","created_at":"2026-05-18T04:24:04Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0807.0097","created_at":"2026-05-18T04:24:04Z"},{"alias_kind":"pith_short_12","alias_value":"LC7WAZ4Q7GIA","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_16","alias_value":"LC7WAZ4Q7GIAKB4B","created_at":"2026-05-18T12:25:57Z"},{"alias_kind":"pith_short_8","alias_value":"LC7WAZ4Q","created_at":"2026-05-18T12:25:57Z"}],"graph_snapshots":[{"event_id":"sha256:8dd3c27ac3da41e9df70bf7afe75c73b7c779b16a79d75c7dbbd719836cc63ca","target":"graph","created_at":"2026-05-18T04:24:04Z","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":"Static packings of frictional rigid particles are investigated by means of discrete element simulations. We explore the ensemble of allowed force realizations in the space of contact forces for a given packing structure. We estimate the extent of force indeterminacy with different methods. The indeterminacy exhibits a nonmonotonic dependence on the interparticle friction coefficient. We verify directly that larger force-indeterminacy is accompanied by a more robust behavior against local perturbations. We also investigate the local indeterminacy of individual contact forces. The probability di","authors_text":"Janos Kertesz, M. Reza Shaebani, Tamas Unger","cross_cats":["cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2008-07-01T10:02:56Z","title":"Extent of force indeterminacy in packings of frictional rigid disks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0807.0097","kind":"arxiv","version":2},"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":"sha256:0e2bad362ce7283434dab860ee2c19c6c6efb11c6775db394737cb626da94298","target":"record","created_at":"2026-05-18T04:24:04Z","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":"26ad95a04a3f9ee0c6a70fc11f30f12c0c570babfb820ce56c81cdc692dbd7de","cross_cats_sorted":["cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2008-07-01T10:02:56Z","title_canon_sha256":"96322b90ec0dffecf2719f7edaa6dd33f3e9176548afe275dcbbe70d3e838aad"},"schema_version":"1.0","source":{"id":"0807.0097","kind":"arxiv","version":2}},"canonical_sha256":"58bf606790f99005078176781548ad2120a4f514bd7a1b7a54bf1291517074c2","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"58bf606790f99005078176781548ad2120a4f514bd7a1b7a54bf1291517074c2","first_computed_at":"2026-05-18T04:24:04.826335Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:24:04.826335Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"tErKnO87EYzwtVZNkg5uWVDoXj6ijKB5+ciYs4BMGVn2RBVrMPKw5EUJM1Rv0utYhvlErXrpr1A3BktRpV0FCg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:24:04.827158Z","signed_message":"canonical_sha256_bytes"},"source_id":"0807.0097","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0e2bad362ce7283434dab860ee2c19c6c6efb11c6775db394737cb626da94298","sha256:8dd3c27ac3da41e9df70bf7afe75c73b7c779b16a79d75c7dbbd719836cc63ca"],"state_sha256":"bfca66b9f8e6ff8ee7874f2193cb0d7ecfa354b6ccda2d4fdbd77bc6ccd13a3a"}