{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:XBOQC5FHTD5GT2T2MUTESUA6GF","short_pith_number":"pith:XBOQC5FH","canonical_record":{"source":{"id":"1807.01975","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2018-07-05T12:53:05Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.soft","cond-mat.stat-mech"],"title_canon_sha256":"7a380c5ac448ea6922b319334e223de209c5d8a60b5c3978582adf31a4e29c50","abstract_canon_sha256":"a450789364fef069c0ee8b816da1913f46058ad97b5207d187c210b3bd2ff28f"},"schema_version":"1.0"},"canonical_sha256":"b85d0174a798fa69ea7a652649501e3174136a62aecd27b21427738701a27225","source":{"kind":"arxiv","id":"1807.01975","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.01975","created_at":"2026-05-18T00:00:18Z"},{"alias_kind":"arxiv_version","alias_value":"1807.01975v2","created_at":"2026-05-18T00:00:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01975","created_at":"2026-05-18T00:00:18Z"},{"alias_kind":"pith_short_12","alias_value":"XBOQC5FHTD5G","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"XBOQC5FHTD5GT2T2","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"XBOQC5FH","created_at":"2026-05-18T12:33:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:XBOQC5FHTD5GT2T2MUTESUA6GF","target":"record","payload":{"canonical_record":{"source":{"id":"1807.01975","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2018-07-05T12:53:05Z","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.soft","cond-mat.stat-mech"],"title_canon_sha256":"7a380c5ac448ea6922b319334e223de209c5d8a60b5c3978582adf31a4e29c50","abstract_canon_sha256":"a450789364fef069c0ee8b816da1913f46058ad97b5207d187c210b3bd2ff28f"},"schema_version":"1.0"},"canonical_sha256":"b85d0174a798fa69ea7a652649501e3174136a62aecd27b21427738701a27225","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:18.994235Z","signature_b64":"PdNUJBS5qLFGqxsXsks0TgtkrRjCuG9wotkjAZl4lWhBT1gI9q1e8ZfpxN9McE5++9YIt55yEZ6G62/t1X1mDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b85d0174a798fa69ea7a652649501e3174136a62aecd27b21427738701a27225","last_reissued_at":"2026-05-18T00:00:18.993734Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:18.993734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1807.01975","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:00:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Spn+GjEkYoPzxrVly7Le0w5IEyEABuIWnpst178fBmE6BaGBFitffHaKyEzE6yy+59VkTWanbnx1DUDh8Ru3DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T14:42:53.309601Z"},"content_sha256":"f1594e1834666a507082f5694d7c178e8bd8fc8c3207e835bb7a0ec56c915787","schema_version":"1.0","event_id":"sha256:f1594e1834666a507082f5694d7c178e8bd8fc8c3207e835bb7a0ec56c915787"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:XBOQC5FHTD5GT2T2MUTESUA6GF","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Universality of jamming of non-spherical particles","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.mtrl-sci","cond-mat.soft","cond-mat.stat-mech"],"primary_cat":"cond-mat.dis-nn","authors_text":"Carolina Brito, Francesco Zamponi, Harukuni Ikeda, Matthieu Wyart, Pierfrancesco Urbani","submitted_at":"2018-07-05T12:53:05Z","abstract_excerpt":"Amorphous packings of non-spherical particles such as ellipsoids and spherocylinders are known to be hypostatic: the number of mechanical contacts between particles is smaller than the number of degrees of freedom, thus violating Maxwell's mechanical stability criterion. In this work, we propose a general theory of hypostatic amorphous packings and the associated jamming transition. First, we show that many systems fall into a same universality class. As an example, we explicitly map ellipsoids into a system of `breathing' particles. We show by using a marginal stability argument that in both "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01975","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":""},"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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:00:18Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"MVeTsvdVuoNXV7nuHLwmzwC7DN/mezJ56CemV5USaamvsMfKYJgg1hRXXZydLv8VrmbLXgPdoZ6AzVBAYnuZDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T14:42:53.309951Z"},"content_sha256":"69e17cfbdad6fd95c195770d7c76a2218fb2728a7b930f8c318afece067d1ec7","schema_version":"1.0","event_id":"sha256:69e17cfbdad6fd95c195770d7c76a2218fb2728a7b930f8c318afece067d1ec7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XBOQC5FHTD5GT2T2MUTESUA6GF/bundle.json","state_url":"https://pith.science/pith/XBOQC5FHTD5GT2T2MUTESUA6GF/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XBOQC5FHTD5GT2T2MUTESUA6GF/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-03T14:42:53Z","links":{"resolver":"https://pith.science/pith/XBOQC5FHTD5GT2T2MUTESUA6GF","bundle":"https://pith.science/pith/XBOQC5FHTD5GT2T2MUTESUA6GF/bundle.json","state":"https://pith.science/pith/XBOQC5FHTD5GT2T2MUTESUA6GF/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XBOQC5FHTD5GT2T2MUTESUA6GF/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:XBOQC5FHTD5GT2T2MUTESUA6GF","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":"a450789364fef069c0ee8b816da1913f46058ad97b5207d187c210b3bd2ff28f","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.soft","cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2018-07-05T12:53:05Z","title_canon_sha256":"7a380c5ac448ea6922b319334e223de209c5d8a60b5c3978582adf31a4e29c50"},"schema_version":"1.0","source":{"id":"1807.01975","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1807.01975","created_at":"2026-05-18T00:00:18Z"},{"alias_kind":"arxiv_version","alias_value":"1807.01975v2","created_at":"2026-05-18T00:00:18Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1807.01975","created_at":"2026-05-18T00:00:18Z"},{"alias_kind":"pith_short_12","alias_value":"XBOQC5FHTD5G","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_16","alias_value":"XBOQC5FHTD5GT2T2","created_at":"2026-05-18T12:33:01Z"},{"alias_kind":"pith_short_8","alias_value":"XBOQC5FH","created_at":"2026-05-18T12:33:01Z"}],"graph_snapshots":[{"event_id":"sha256:69e17cfbdad6fd95c195770d7c76a2218fb2728a7b930f8c318afece067d1ec7","target":"graph","created_at":"2026-05-18T00:00:18Z","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":"Amorphous packings of non-spherical particles such as ellipsoids and spherocylinders are known to be hypostatic: the number of mechanical contacts between particles is smaller than the number of degrees of freedom, thus violating Maxwell's mechanical stability criterion. In this work, we propose a general theory of hypostatic amorphous packings and the associated jamming transition. First, we show that many systems fall into a same universality class. As an example, we explicitly map ellipsoids into a system of `breathing' particles. We show by using a marginal stability argument that in both ","authors_text":"Carolina Brito, Francesco Zamponi, Harukuni Ikeda, Matthieu Wyart, Pierfrancesco Urbani","cross_cats":["cond-mat.mtrl-sci","cond-mat.soft","cond-mat.stat-mech"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2018-07-05T12:53:05Z","title":"Universality of jamming of non-spherical particles"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.01975","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:f1594e1834666a507082f5694d7c178e8bd8fc8c3207e835bb7a0ec56c915787","target":"record","created_at":"2026-05-18T00:00:18Z","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":"a450789364fef069c0ee8b816da1913f46058ad97b5207d187c210b3bd2ff28f","cross_cats_sorted":["cond-mat.mtrl-sci","cond-mat.soft","cond-mat.stat-mech"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.dis-nn","submitted_at":"2018-07-05T12:53:05Z","title_canon_sha256":"7a380c5ac448ea6922b319334e223de209c5d8a60b5c3978582adf31a4e29c50"},"schema_version":"1.0","source":{"id":"1807.01975","kind":"arxiv","version":2}},"canonical_sha256":"b85d0174a798fa69ea7a652649501e3174136a62aecd27b21427738701a27225","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b85d0174a798fa69ea7a652649501e3174136a62aecd27b21427738701a27225","first_computed_at":"2026-05-18T00:00:18.993734Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:18.993734Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PdNUJBS5qLFGqxsXsks0TgtkrRjCuG9wotkjAZl4lWhBT1gI9q1e8ZfpxN9McE5++9YIt55yEZ6G62/t1X1mDw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:18.994235Z","signed_message":"canonical_sha256_bytes"},"source_id":"1807.01975","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f1594e1834666a507082f5694d7c178e8bd8fc8c3207e835bb7a0ec56c915787","sha256:69e17cfbdad6fd95c195770d7c76a2218fb2728a7b930f8c318afece067d1ec7"],"state_sha256":"b131957d2e0edd944ecdaafc3f225b3411e16eac0f1400f4a15ad055bcb1ba60"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C+WI6dT26B/6BpYdg7xHvX91MAH625utkdC4AbbpDXP40fzfCxGSlhbgkcn482riiM3XMrmiG/faUd4lj1qXBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T14:42:53.311858Z","bundle_sha256":"db9c6ea80f69329122d832150791ec8ae2613e26294701fe7279b7d876606101"}}