{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:R7IUC2CLP54RBDBF7ZUZTVOUAD","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":"00291d1cddaa612d36bff1ffd6ecad006eba5eb8a31fb18d9ebe25e8ce573773","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-09-27T08:26:15Z","title_canon_sha256":"a60302485918c5b07a12b768cb26c0b4c019f0adc6976646b7c92e87dccb5c9a"},"schema_version":"1.0","source":{"id":"1309.7147","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.7147","created_at":"2026-05-18T03:12:00Z"},{"alias_kind":"arxiv_version","alias_value":"1309.7147v1","created_at":"2026-05-18T03:12:00Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.7147","created_at":"2026-05-18T03:12:00Z"},{"alias_kind":"pith_short_12","alias_value":"R7IUC2CLP54R","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_16","alias_value":"R7IUC2CLP54RBDBF","created_at":"2026-05-18T12:27:57Z"},{"alias_kind":"pith_short_8","alias_value":"R7IUC2CL","created_at":"2026-05-18T12:27:57Z"}],"graph_snapshots":[{"event_id":"sha256:830c095e3f7fe6004d32693a0164a00b37df13dd7c1a7b8df21fe2264a1cd1df","target":"graph","created_at":"2026-05-18T03:12:00Z","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":"We have explored isotropically jammed states of semi-2D granular materials through cyclic compression. In each compression cycle, systems of either identical ellipses or bi-disperse disks, transition between jammed and unjammed states. We determine the evolution of the average pressure, P, and structure through consecutive jammed states. We observe a transition point, {\\phi}m, above which P persists over many cycles; below {\\phi}m, P relaxes slowly. The relaxation time scale associated with P increases with packing fraction, while the relaxation time scale for collective particle motion remain","authors_text":"Alex Z Zhu, Robert P Behringer, Somayeh Farhadi","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-09-27T08:26:15Z","title":"Stress relaxation for granular materials near Jamming under cyclic compression"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.7147","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":"sha256:671e0085be023a42de6c14020ee28d26688d3424f03e8fc22914afcdeb7b30b2","target":"record","created_at":"2026-05-18T03:12:00Z","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":"00291d1cddaa612d36bff1ffd6ecad006eba5eb8a31fb18d9ebe25e8ce573773","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2013-09-27T08:26:15Z","title_canon_sha256":"a60302485918c5b07a12b768cb26c0b4c019f0adc6976646b7c92e87dccb5c9a"},"schema_version":"1.0","source":{"id":"1309.7147","kind":"arxiv","version":1}},"canonical_sha256":"8fd141684b7f79108c25fe6999d5d400c7fb3082121184c95a657d451f249a20","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8fd141684b7f79108c25fe6999d5d400c7fb3082121184c95a657d451f249a20","first_computed_at":"2026-05-18T03:12:00.083470Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:12:00.083470Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yZfPFiuE0tJsunbIV+R3D1lPn7ntpOLfYkvWsyeKkmhFanu/UIoJNGdYisA5Efuf4VDIfRz/AFyj1uS8L8bPAA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:12:00.084501Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.7147","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:671e0085be023a42de6c14020ee28d26688d3424f03e8fc22914afcdeb7b30b2","sha256:830c095e3f7fe6004d32693a0164a00b37df13dd7c1a7b8df21fe2264a1cd1df"],"state_sha256":"577144faa14309a3136ee11957ffdd4db594ef3570743c6498474223b98fc431"}