{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:2VG2OY55WKVKMBOV7TI4G3LHCM","short_pith_number":"pith:2VG2OY55","canonical_record":{"source":{"id":"1606.01306","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-06-03T23:36:49Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"8cddca12a67646cce1b4a4152b6cfe0950ada6acbb8c44e861dfcaa48b48601d","abstract_canon_sha256":"3976e09755b20b83b1eafd6d35bd855f8637bf74a3bf2ee31019ef6c9a75ad84"},"schema_version":"1.0"},"canonical_sha256":"d54da763bdb2aaa605d5fcd1c36d6713141450abe6f7977eb3ae53e69cdb295c","source":{"kind":"arxiv","id":"1606.01306","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.01306","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"arxiv_version","alias_value":"1606.01306v1","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.01306","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"pith_short_12","alias_value":"2VG2OY55WKVK","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2VG2OY55WKVKMBOV","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2VG2OY55","created_at":"2026-05-18T12:29:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:2VG2OY55WKVKMBOV7TI4G3LHCM","target":"record","payload":{"canonical_record":{"source":{"id":"1606.01306","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-06-03T23:36:49Z","cross_cats_sorted":["nucl-ex"],"title_canon_sha256":"8cddca12a67646cce1b4a4152b6cfe0950ada6acbb8c44e861dfcaa48b48601d","abstract_canon_sha256":"3976e09755b20b83b1eafd6d35bd855f8637bf74a3bf2ee31019ef6c9a75ad84"},"schema_version":"1.0"},"canonical_sha256":"d54da763bdb2aaa605d5fcd1c36d6713141450abe6f7977eb3ae53e69cdb295c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:12:02.160099Z","signature_b64":"wB60IF66TumKVBnG3wMnns3fMeqFQtnXWReSNdyECyiT/QpI8UGhIANe3Tic8VuCZo8jdMBoRLwP4erx/IoRDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d54da763bdb2aaa605d5fcd1c36d6713141450abe6f7977eb3ae53e69cdb295c","last_reissued_at":"2026-05-18T01:12:02.159765Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:12:02.159765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1606.01306","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":"2026-05-18T01:12:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"7s5YL8Sbq0XSLrPOBpAN93CD5mWvxAahznwC9c/VB2iTM5lYmsglfKIURLvXRYL0mJ71Qa5MSx+yM8mFCDT4DQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T03:25:19.396016Z"},"content_sha256":"0c3bf6df217c9b4519cff817898252214f7839a9d48712bfc31a52c3fb163c7f","schema_version":"1.0","event_id":"sha256:0c3bf6df217c9b4519cff817898252214f7839a9d48712bfc31a52c3fb163c7f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:2VG2OY55WKVKMBOV7TI4G3LHCM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Geometrical symmetries of nuclear systems: D(3h) and T(d) symmetries in light nuclei","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"nucl-th","authors_text":"Roelof Bijker","submitted_at":"2016-06-03T23:36:49Z","abstract_excerpt":"The role of discrete (or point-group) symmetries in alpha-cluster nuclei is discussed in the framework of the algebraic cluster model which describes the relative motion of the alpha-particles. Particular attention is paid to the discrete symmetry of the geometric arrangement of the alpha-particles, and the consequences for the structure of the corresponding rotational bands. The method is applied to study cluster states in the nuclei 12C and 16O. The observed level sequences can be understood in a simple way as a consequence of the underlying discrete symmetry that characterizes the geometric"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.01306","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":"2026-05-18T01:12:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1sVbLjMYnvL6inTVpy4UiygRFvzBZ7tD9qmd8c0F+fQJzcWObrBbmHlwk1JB7l/bzco4aoeasL8435SglH7VDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-27T03:25:19.396364Z"},"content_sha256":"269a034f4160a116983a58f58c3382fc63cee80c7a9e95c2c90c11ab00dbcd1c","schema_version":"1.0","event_id":"sha256:269a034f4160a116983a58f58c3382fc63cee80c7a9e95c2c90c11ab00dbcd1c"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2VG2OY55WKVKMBOV7TI4G3LHCM/bundle.json","state_url":"https://pith.science/pith/2VG2OY55WKVKMBOV7TI4G3LHCM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2VG2OY55WKVKMBOV7TI4G3LHCM/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":"2026-06-27T03:25:19Z","links":{"resolver":"https://pith.science/pith/2VG2OY55WKVKMBOV7TI4G3LHCM","bundle":"https://pith.science/pith/2VG2OY55WKVKMBOV7TI4G3LHCM/bundle.json","state":"https://pith.science/pith/2VG2OY55WKVKMBOV7TI4G3LHCM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2VG2OY55WKVKMBOV7TI4G3LHCM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:2VG2OY55WKVKMBOV7TI4G3LHCM","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":"3976e09755b20b83b1eafd6d35bd855f8637bf74a3bf2ee31019ef6c9a75ad84","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-06-03T23:36:49Z","title_canon_sha256":"8cddca12a67646cce1b4a4152b6cfe0950ada6acbb8c44e861dfcaa48b48601d"},"schema_version":"1.0","source":{"id":"1606.01306","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1606.01306","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"arxiv_version","alias_value":"1606.01306v1","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1606.01306","created_at":"2026-05-18T01:12:02Z"},{"alias_kind":"pith_short_12","alias_value":"2VG2OY55WKVK","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_16","alias_value":"2VG2OY55WKVKMBOV","created_at":"2026-05-18T12:29:55Z"},{"alias_kind":"pith_short_8","alias_value":"2VG2OY55","created_at":"2026-05-18T12:29:55Z"}],"graph_snapshots":[{"event_id":"sha256:269a034f4160a116983a58f58c3382fc63cee80c7a9e95c2c90c11ab00dbcd1c","target":"graph","created_at":"2026-05-18T01:12:02Z","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":"The role of discrete (or point-group) symmetries in alpha-cluster nuclei is discussed in the framework of the algebraic cluster model which describes the relative motion of the alpha-particles. Particular attention is paid to the discrete symmetry of the geometric arrangement of the alpha-particles, and the consequences for the structure of the corresponding rotational bands. The method is applied to study cluster states in the nuclei 12C and 16O. The observed level sequences can be understood in a simple way as a consequence of the underlying discrete symmetry that characterizes the geometric","authors_text":"Roelof Bijker","cross_cats":["nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-06-03T23:36:49Z","title":"Geometrical symmetries of nuclear systems: D(3h) and T(d) symmetries in light nuclei"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1606.01306","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":"sha256:0c3bf6df217c9b4519cff817898252214f7839a9d48712bfc31a52c3fb163c7f","target":"record","created_at":"2026-05-18T01:12:02Z","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":"3976e09755b20b83b1eafd6d35bd855f8637bf74a3bf2ee31019ef6c9a75ad84","cross_cats_sorted":["nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2016-06-03T23:36:49Z","title_canon_sha256":"8cddca12a67646cce1b4a4152b6cfe0950ada6acbb8c44e861dfcaa48b48601d"},"schema_version":"1.0","source":{"id":"1606.01306","kind":"arxiv","version":1}},"canonical_sha256":"d54da763bdb2aaa605d5fcd1c36d6713141450abe6f7977eb3ae53e69cdb295c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d54da763bdb2aaa605d5fcd1c36d6713141450abe6f7977eb3ae53e69cdb295c","first_computed_at":"2026-05-18T01:12:02.159765Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:12:02.159765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"wB60IF66TumKVBnG3wMnns3fMeqFQtnXWReSNdyECyiT/QpI8UGhIANe3Tic8VuCZo8jdMBoRLwP4erx/IoRDw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:12:02.160099Z","signed_message":"canonical_sha256_bytes"},"source_id":"1606.01306","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0c3bf6df217c9b4519cff817898252214f7839a9d48712bfc31a52c3fb163c7f","sha256:269a034f4160a116983a58f58c3382fc63cee80c7a9e95c2c90c11ab00dbcd1c"],"state_sha256":"fbaae5fe1ecf9cea37856ea8ea3ca08c4b4b7f363a6bd904693b9790174bc0d4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"PAmfpCsOIqbFt36ERWpRjUYrslMvxKN+PeKIgxcGflXG3UBT91TR2x8t5M9wJfreTZ385168YYSWD1qBWzUFDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-27T03:25:19.398734Z","bundle_sha256":"476b5ef58931b73585973dfa3af87a3757f78b126364a9ba552093718ee32e32"}}