{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2009:OX24ELQQ6KK7FYDTOG5WBBAZGB","short_pith_number":"pith:OX24ELQQ","canonical_record":{"source":{"id":"0903.0171","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2009-03-01T19:59:09Z","cross_cats_sorted":[],"title_canon_sha256":"963bb4b32040c9595d69a2405a6f0e1a4feea85eae023ab6b3210778574b27e3","abstract_canon_sha256":"d0a685f30f76363fde5591707e88a10d8de652f5f84088c99c29f2e01a0e9b57"},"schema_version":"1.0"},"canonical_sha256":"75f5c22e10f295f2e07371bb608419305afb91b18897028442b8d2a90edfdbf1","source":{"kind":"arxiv","id":"0903.0171","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.0171","created_at":"2026-05-18T04:28:56Z"},{"alias_kind":"arxiv_version","alias_value":"0903.0171v1","created_at":"2026-05-18T04:28:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.0171","created_at":"2026-05-18T04:28:56Z"},{"alias_kind":"pith_short_12","alias_value":"OX24ELQQ6KK7","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"OX24ELQQ6KK7FYDT","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"OX24ELQQ","created_at":"2026-05-18T12:26:01Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2009:OX24ELQQ6KK7FYDTOG5WBBAZGB","target":"record","payload":{"canonical_record":{"source":{"id":"0903.0171","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2009-03-01T19:59:09Z","cross_cats_sorted":[],"title_canon_sha256":"963bb4b32040c9595d69a2405a6f0e1a4feea85eae023ab6b3210778574b27e3","abstract_canon_sha256":"d0a685f30f76363fde5591707e88a10d8de652f5f84088c99c29f2e01a0e9b57"},"schema_version":"1.0"},"canonical_sha256":"75f5c22e10f295f2e07371bb608419305afb91b18897028442b8d2a90edfdbf1","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:28:56.849717Z","signature_b64":"sVBvR+8BCy+L7HD9KoBhP1JTip8xueZC97VvjqoPsIRxAfUuAdPD1hYEocnf57osl9blPOjwGjhLi/fDIEoRBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"75f5c22e10f295f2e07371bb608419305afb91b18897028442b8d2a90edfdbf1","last_reissued_at":"2026-05-18T04:28:56.849120Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:28:56.849120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0903.0171","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T04:28:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"C81hRL+zBtEsOThZmY5ZpX6+2b1xa8dVi3emIlGWWXUxuLkyofIu9CJ4XguUA/OLcfrGX0yNi+ShYeH9cY52Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T04:05:05.349959Z"},"content_sha256":"e73849a09bcf6b209288739a5236af1b45a05762732723c4974cfb89e84901ed","schema_version":"1.0","event_id":"sha256:e73849a09bcf6b209288739a5236af1b45a05762732723c4974cfb89e84901ed"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2009:OX24ELQQ6KK7FYDTOG5WBBAZGB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"The effect of nuclear deformation on level statistics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"A. Al-Sayed","submitted_at":"2009-03-01T19:59:09Z","abstract_excerpt":"We analyze the nearest neighbor spacing distributions of low-lying 2+ levels of even-even nuclei. We grouped the nuclei into classes defined by the quadrupole deformation parameter (Beta2). We calculate the nearest neighbor spacing distributions for each class. Then, we determine the chaoticity parameter for each class with the help of the Bayesian inference method. We compare these distributions to a formula that describes the transition to chaos by varying a tuning parameter. This parameter appears to depend in a non-trivial way on the nuclear deformation, and takes small values indicating r"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.0171","kind":"arxiv","version":1},"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":"2026-05-18T04:28:56Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3J24cFObdmwZZ2Dd6ApapmAeBa/V5L/OFkwMP4S18nhJ4j+mJ9lYBNR5iK+IQeGUsy/S6eKe/D2RRrKZ2KC3BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-02T04:05:05.350309Z"},"content_sha256":"05ca1a6554da4191070baf2545e871bf86b3a630be01ce1f381f4dcd7a156e61","schema_version":"1.0","event_id":"sha256:05ca1a6554da4191070baf2545e871bf86b3a630be01ce1f381f4dcd7a156e61"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OX24ELQQ6KK7FYDTOG5WBBAZGB/bundle.json","state_url":"https://pith.science/pith/OX24ELQQ6KK7FYDTOG5WBBAZGB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OX24ELQQ6KK7FYDTOG5WBBAZGB/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":"2026-06-02T04:05:05Z","links":{"resolver":"https://pith.science/pith/OX24ELQQ6KK7FYDTOG5WBBAZGB","bundle":"https://pith.science/pith/OX24ELQQ6KK7FYDTOG5WBBAZGB/bundle.json","state":"https://pith.science/pith/OX24ELQQ6KK7FYDTOG5WBBAZGB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OX24ELQQ6KK7FYDTOG5WBBAZGB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2009:OX24ELQQ6KK7FYDTOG5WBBAZGB","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":"d0a685f30f76363fde5591707e88a10d8de652f5f84088c99c29f2e01a0e9b57","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2009-03-01T19:59:09Z","title_canon_sha256":"963bb4b32040c9595d69a2405a6f0e1a4feea85eae023ab6b3210778574b27e3"},"schema_version":"1.0","source":{"id":"0903.0171","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0903.0171","created_at":"2026-05-18T04:28:56Z"},{"alias_kind":"arxiv_version","alias_value":"0903.0171v1","created_at":"2026-05-18T04:28:56Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0903.0171","created_at":"2026-05-18T04:28:56Z"},{"alias_kind":"pith_short_12","alias_value":"OX24ELQQ6KK7","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_16","alias_value":"OX24ELQQ6KK7FYDT","created_at":"2026-05-18T12:26:01Z"},{"alias_kind":"pith_short_8","alias_value":"OX24ELQQ","created_at":"2026-05-18T12:26:01Z"}],"graph_snapshots":[{"event_id":"sha256:05ca1a6554da4191070baf2545e871bf86b3a630be01ce1f381f4dcd7a156e61","target":"graph","created_at":"2026-05-18T04:28:56Z","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 analyze the nearest neighbor spacing distributions of low-lying 2+ levels of even-even nuclei. We grouped the nuclei into classes defined by the quadrupole deformation parameter (Beta2). We calculate the nearest neighbor spacing distributions for each class. Then, we determine the chaoticity parameter for each class with the help of the Bayesian inference method. We compare these distributions to a formula that describes the transition to chaos by varying a tuning parameter. This parameter appears to depend in a non-trivial way on the nuclear deformation, and takes small values indicating r","authors_text":"A. Al-Sayed","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2009-03-01T19:59:09Z","title":"The effect of nuclear deformation on level statistics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0903.0171","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:e73849a09bcf6b209288739a5236af1b45a05762732723c4974cfb89e84901ed","target":"record","created_at":"2026-05-18T04:28:56Z","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":"d0a685f30f76363fde5591707e88a10d8de652f5f84088c99c29f2e01a0e9b57","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2009-03-01T19:59:09Z","title_canon_sha256":"963bb4b32040c9595d69a2405a6f0e1a4feea85eae023ab6b3210778574b27e3"},"schema_version":"1.0","source":{"id":"0903.0171","kind":"arxiv","version":1}},"canonical_sha256":"75f5c22e10f295f2e07371bb608419305afb91b18897028442b8d2a90edfdbf1","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"75f5c22e10f295f2e07371bb608419305afb91b18897028442b8d2a90edfdbf1","first_computed_at":"2026-05-18T04:28:56.849120Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:28:56.849120Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"sVBvR+8BCy+L7HD9KoBhP1JTip8xueZC97VvjqoPsIRxAfUuAdPD1hYEocnf57osl9blPOjwGjhLi/fDIEoRBg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:28:56.849717Z","signed_message":"canonical_sha256_bytes"},"source_id":"0903.0171","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e73849a09bcf6b209288739a5236af1b45a05762732723c4974cfb89e84901ed","sha256:05ca1a6554da4191070baf2545e871bf86b3a630be01ce1f381f4dcd7a156e61"],"state_sha256":"5614f510b5d8a7029a86f43e81e085d1dabb5d19de9d3709e554c0ed7c668564"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ac8tdofRoEFnC6cAKcrAhLmofS8mKXgy2FdbryJ+O+oLMmndUrP9KGCnaukSZdPgxKgybyXA6W2OJJq36jiqAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-02T04:05:05.352391Z","bundle_sha256":"5d2b83dc63118f6450581ad05ea892c0d79a38ea29aae86f9575fc386fcd1ea7"}}