{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:TDQ6VYIHQJ3M52MF5WCUCVINW5","short_pith_number":"pith:TDQ6VYIH","canonical_record":{"source":{"id":"1204.2626","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-04-12T06:42:14Z","cross_cats_sorted":[],"title_canon_sha256":"4f0a0d65c8f0e7fbc3c24f6ac4e0822493c0d2ba41413ef90aa08821b8459cfc","abstract_canon_sha256":"e1fc3b46733faa0f93a9aac0ecfc863a546fdb28490395b07f5231c9bca98dcd"},"schema_version":"1.0"},"canonical_sha256":"98e1eae1078276cee985ed8541550db74304aee2024fe073e8eca156e290d29c","source":{"kind":"arxiv","id":"1204.2626","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.2626","created_at":"2026-05-18T03:56:21Z"},{"alias_kind":"arxiv_version","alias_value":"1204.2626v1","created_at":"2026-05-18T03:56:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.2626","created_at":"2026-05-18T03:56:21Z"},{"alias_kind":"pith_short_12","alias_value":"TDQ6VYIHQJ3M","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"TDQ6VYIHQJ3M52MF","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"TDQ6VYIH","created_at":"2026-05-18T12:27:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:TDQ6VYIHQJ3M52MF5WCUCVINW5","target":"record","payload":{"canonical_record":{"source":{"id":"1204.2626","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-04-12T06:42:14Z","cross_cats_sorted":[],"title_canon_sha256":"4f0a0d65c8f0e7fbc3c24f6ac4e0822493c0d2ba41413ef90aa08821b8459cfc","abstract_canon_sha256":"e1fc3b46733faa0f93a9aac0ecfc863a546fdb28490395b07f5231c9bca98dcd"},"schema_version":"1.0"},"canonical_sha256":"98e1eae1078276cee985ed8541550db74304aee2024fe073e8eca156e290d29c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:56:21.767004Z","signature_b64":"z25+oV1G6KZYHc/e3LiD3ka6kXk9WZTVfbVdiYqagWVeLDlwkCJ6JSmNgG+EbjkqWtIPOgs5GYhQxh9yg0YwDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"98e1eae1078276cee985ed8541550db74304aee2024fe073e8eca156e290d29c","last_reissued_at":"2026-05-18T03:56:21.766329Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:56:21.766329Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1204.2626","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":"2026-05-18T03:56:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qYfOOJEeaCM+rgf58V13zaDNbGiOTY7q+ITJ032VwLC2Bc6aMJx6I4LaRcPFIs14H+/tT0zvxvQsMi0EbpD+BA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T06:05:07.372619Z"},"content_sha256":"56bb5ab7f14201aff96a9f72aa9abb2af7843de9ea418fd2956f55963fb86332","schema_version":"1.0","event_id":"sha256:56bb5ab7f14201aff96a9f72aa9abb2af7843de9ea418fd2956f55963fb86332"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:TDQ6VYIHQJ3M52MF5WCUCVINW5","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Variational procedure for nuclear shell-model calculations and energy-variance extrapolation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Michio Honma, Noritaka Shimizu, Takaharu Otsuka, Takahiro Mizusaki, Yusuke Tsunoda, Yutaka Utsuno","submitted_at":"2012-04-12T06:42:14Z","abstract_excerpt":"We discuss a variational calculation for nuclear shell-model calculations and propose a new procedure for the energy-variance extrapolation (EVE) method using a sequence of the approximated wave functions obtained by the variational calculation. The wave functions are described as linear combinations of the parity, angular-momentum projected Slater determinants, the energy of which is minimized by the conjugate gradient method obeying the variational principle. The EVE generally works well using the wave functions, but we found some difficult cases where the EVE gives a poor estimation. We dis"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.2626","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":"2026-05-18T03:56:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"pdKF11c+RjFRsP5aVFBXs4gZrdJk2+fiMTsyJVYV+JeDyx9OgSNFOWGelR41ad2Wa4Lc/XiVWOvf7jUT0QNKDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-06T06:05:07.373303Z"},"content_sha256":"5e1c7cb6b62ed2c6e324cf8b1ea0baea89c3087b0f7a052336c44496015bd5a7","schema_version":"1.0","event_id":"sha256:5e1c7cb6b62ed2c6e324cf8b1ea0baea89c3087b0f7a052336c44496015bd5a7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/TDQ6VYIHQJ3M52MF5WCUCVINW5/bundle.json","state_url":"https://pith.science/pith/TDQ6VYIHQJ3M52MF5WCUCVINW5/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/TDQ6VYIHQJ3M52MF5WCUCVINW5/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":"2026-06-06T06:05:07Z","links":{"resolver":"https://pith.science/pith/TDQ6VYIHQJ3M52MF5WCUCVINW5","bundle":"https://pith.science/pith/TDQ6VYIHQJ3M52MF5WCUCVINW5/bundle.json","state":"https://pith.science/pith/TDQ6VYIHQJ3M52MF5WCUCVINW5/state.json","well_known_bundle":"https://pith.science/.well-known/pith/TDQ6VYIHQJ3M52MF5WCUCVINW5/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:TDQ6VYIHQJ3M52MF5WCUCVINW5","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":"e1fc3b46733faa0f93a9aac0ecfc863a546fdb28490395b07f5231c9bca98dcd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-04-12T06:42:14Z","title_canon_sha256":"4f0a0d65c8f0e7fbc3c24f6ac4e0822493c0d2ba41413ef90aa08821b8459cfc"},"schema_version":"1.0","source":{"id":"1204.2626","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1204.2626","created_at":"2026-05-18T03:56:21Z"},{"alias_kind":"arxiv_version","alias_value":"1204.2626v1","created_at":"2026-05-18T03:56:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1204.2626","created_at":"2026-05-18T03:56:21Z"},{"alias_kind":"pith_short_12","alias_value":"TDQ6VYIHQJ3M","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"TDQ6VYIHQJ3M52MF","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"TDQ6VYIH","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:5e1c7cb6b62ed2c6e324cf8b1ea0baea89c3087b0f7a052336c44496015bd5a7","target":"graph","created_at":"2026-05-18T03:56:21Z","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 discuss a variational calculation for nuclear shell-model calculations and propose a new procedure for the energy-variance extrapolation (EVE) method using a sequence of the approximated wave functions obtained by the variational calculation. The wave functions are described as linear combinations of the parity, angular-momentum projected Slater determinants, the energy of which is minimized by the conjugate gradient method obeying the variational principle. The EVE generally works well using the wave functions, but we found some difficult cases where the EVE gives a poor estimation. We dis","authors_text":"Michio Honma, Noritaka Shimizu, Takaharu Otsuka, Takahiro Mizusaki, Yusuke Tsunoda, Yutaka Utsuno","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-04-12T06:42:14Z","title":"Variational procedure for nuclear shell-model calculations and energy-variance extrapolation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1204.2626","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":"sha256:56bb5ab7f14201aff96a9f72aa9abb2af7843de9ea418fd2956f55963fb86332","target":"record","created_at":"2026-05-18T03:56:21Z","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":"e1fc3b46733faa0f93a9aac0ecfc863a546fdb28490395b07f5231c9bca98dcd","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2012-04-12T06:42:14Z","title_canon_sha256":"4f0a0d65c8f0e7fbc3c24f6ac4e0822493c0d2ba41413ef90aa08821b8459cfc"},"schema_version":"1.0","source":{"id":"1204.2626","kind":"arxiv","version":1}},"canonical_sha256":"98e1eae1078276cee985ed8541550db74304aee2024fe073e8eca156e290d29c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"98e1eae1078276cee985ed8541550db74304aee2024fe073e8eca156e290d29c","first_computed_at":"2026-05-18T03:56:21.766329Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:56:21.766329Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"z25+oV1G6KZYHc/e3LiD3ka6kXk9WZTVfbVdiYqagWVeLDlwkCJ6JSmNgG+EbjkqWtIPOgs5GYhQxh9yg0YwDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:56:21.767004Z","signed_message":"canonical_sha256_bytes"},"source_id":"1204.2626","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:56bb5ab7f14201aff96a9f72aa9abb2af7843de9ea418fd2956f55963fb86332","sha256:5e1c7cb6b62ed2c6e324cf8b1ea0baea89c3087b0f7a052336c44496015bd5a7"],"state_sha256":"03949813390e31833ff7eb28ab2ee47f1c57ca3ab0064b392493d71af028f2b4"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"US3NoKUMuaZQPDeXlCrWSdlJ9KzxS1/DFTsrEo0vu8bhL9/0vVxqNAWWiZ6J9BUzE4zvkBo7Tfcj7dFvh0KrDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-06T06:05:07.377826Z","bundle_sha256":"243ac20ad2e43b5e75ccff5e79fab4cb2ecc90fbc2f76f7dec0a0e19af13b9be"}}