{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:2JF3UVEIA26BINY2AUN4ZG77RS","short_pith_number":"pith:2JF3UVEI","canonical_record":{"source":{"id":"1303.0905","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-03-05T01:47:51Z","cross_cats_sorted":["physics.atom-ph","physics.comp-ph"],"title_canon_sha256":"2ab4740088923a52e4537c3e721d2fe5564d2fa8ad4107bcd67e7e92f2b4732b","abstract_canon_sha256":"6e30bfe0bcfe53f6db75e132f27c49d7afae49475c42e65f4af94e602bbf655c"},"schema_version":"1.0"},"canonical_sha256":"d24bba548806bc14371a051bcc9bff8c9ca8fefc1e8fc0959c4df76d5622fcb4","source":{"kind":"arxiv","id":"1303.0905","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.0905","created_at":"2026-05-18T01:51:17Z"},{"alias_kind":"arxiv_version","alias_value":"1303.0905v3","created_at":"2026-05-18T01:51:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.0905","created_at":"2026-05-18T01:51:17Z"},{"alias_kind":"pith_short_12","alias_value":"2JF3UVEIA26B","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"2JF3UVEIA26BINY2","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"2JF3UVEI","created_at":"2026-05-18T12:27:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:2JF3UVEIA26BINY2AUN4ZG77RS","target":"record","payload":{"canonical_record":{"source":{"id":"1303.0905","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-03-05T01:47:51Z","cross_cats_sorted":["physics.atom-ph","physics.comp-ph"],"title_canon_sha256":"2ab4740088923a52e4537c3e721d2fe5564d2fa8ad4107bcd67e7e92f2b4732b","abstract_canon_sha256":"6e30bfe0bcfe53f6db75e132f27c49d7afae49475c42e65f4af94e602bbf655c"},"schema_version":"1.0"},"canonical_sha256":"d24bba548806bc14371a051bcc9bff8c9ca8fefc1e8fc0959c4df76d5622fcb4","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:17.041440Z","signature_b64":"i4219hH6wm+WHYl5LmE5fAt7Wn2E8VIAHzEBg/Gwjh0UJv0v7Mp87+tFfwgwvHwAagGxHhKSPw2HRxDq2VMoCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d24bba548806bc14371a051bcc9bff8c9ca8fefc1e8fc0959c4df76d5622fcb4","last_reissued_at":"2026-05-18T01:51:17.040777Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:17.040777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1303.0905","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:51:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jtbo4aBZTf1dgpKesHKIMxqMYzVl+ar/9tnk8WuwkPLCWif8JpF8dQRVcT9OwQbGTBtY+7L73viry6ddhBSWBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T08:46:41.618467Z"},"content_sha256":"f3828f5f180b039a68cd1846e769be73cb04d52f252baf197d6556f6c5c67c3c","schema_version":"1.0","event_id":"sha256:f3828f5f180b039a68cd1846e769be73cb04d52f252baf197d6556f6c5c67c3c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:2JF3UVEIA26BINY2AUN4ZG77RS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Factorization in large-scale many-body calculations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.atom-ph","physics.comp-ph"],"primary_cat":"nucl-th","authors_text":"Calvin W. Johnson, Plamen G. Krastev, W. Erich Ormand","submitted_at":"2013-03-05T01:47:51Z","abstract_excerpt":"One approach for solving interacting many-fermion systems is the configuration-interaction method, also sometimes called the interacting shell model, where one finds eigenvalues of the Hamiltonian in a many-body basis of Slater determinants (antisymmeterized products of single-particle wavefunctions). The resulting Hamiltonian matrix is typically very sparse, but for large systems the nonzero matrix elements can nonetheless require terabytes or more of storage. An alternate algorithm, applicable to a broad class of systems with symmetry, in our case rotational invariance, is to exactly factori"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.0905","kind":"arxiv","version":3},"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":"2026-05-18T01:51:17Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Mca3hDCn6cMuC3MF3b/1Q+JKiUTWUcUa2zd33MLWiLrup6CsTF4a22oG1hSxU08AjWMazSf9wii09kXweLl4Bw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-12T08:46:41.619247Z"},"content_sha256":"c7ce38768ad55157ea614a681d98b575f237120db43b3d01b63881d6a5282cb0","schema_version":"1.0","event_id":"sha256:c7ce38768ad55157ea614a681d98b575f237120db43b3d01b63881d6a5282cb0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/2JF3UVEIA26BINY2AUN4ZG77RS/bundle.json","state_url":"https://pith.science/pith/2JF3UVEIA26BINY2AUN4ZG77RS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/2JF3UVEIA26BINY2AUN4ZG77RS/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":"2026-08-12T08:46:41Z","links":{"resolver":"https://pith.science/pith/2JF3UVEIA26BINY2AUN4ZG77RS","bundle":"https://pith.science/pith/2JF3UVEIA26BINY2AUN4ZG77RS/bundle.json","state":"https://pith.science/pith/2JF3UVEIA26BINY2AUN4ZG77RS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/2JF3UVEIA26BINY2AUN4ZG77RS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:2JF3UVEIA26BINY2AUN4ZG77RS","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":"6e30bfe0bcfe53f6db75e132f27c49d7afae49475c42e65f4af94e602bbf655c","cross_cats_sorted":["physics.atom-ph","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-03-05T01:47:51Z","title_canon_sha256":"2ab4740088923a52e4537c3e721d2fe5564d2fa8ad4107bcd67e7e92f2b4732b"},"schema_version":"1.0","source":{"id":"1303.0905","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1303.0905","created_at":"2026-05-18T01:51:17Z"},{"alias_kind":"arxiv_version","alias_value":"1303.0905v3","created_at":"2026-05-18T01:51:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1303.0905","created_at":"2026-05-18T01:51:17Z"},{"alias_kind":"pith_short_12","alias_value":"2JF3UVEIA26B","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_16","alias_value":"2JF3UVEIA26BINY2","created_at":"2026-05-18T12:27:30Z"},{"alias_kind":"pith_short_8","alias_value":"2JF3UVEI","created_at":"2026-05-18T12:27:30Z"}],"graph_snapshots":[{"event_id":"sha256:c7ce38768ad55157ea614a681d98b575f237120db43b3d01b63881d6a5282cb0","target":"graph","created_at":"2026-05-18T01:51:17Z","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":"One approach for solving interacting many-fermion systems is the configuration-interaction method, also sometimes called the interacting shell model, where one finds eigenvalues of the Hamiltonian in a many-body basis of Slater determinants (antisymmeterized products of single-particle wavefunctions). The resulting Hamiltonian matrix is typically very sparse, but for large systems the nonzero matrix elements can nonetheless require terabytes or more of storage. An alternate algorithm, applicable to a broad class of systems with symmetry, in our case rotational invariance, is to exactly factori","authors_text":"Calvin W. Johnson, Plamen G. Krastev, W. Erich Ormand","cross_cats":["physics.atom-ph","physics.comp-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-03-05T01:47:51Z","title":"Factorization in large-scale many-body calculations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1303.0905","kind":"arxiv","version":3},"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:f3828f5f180b039a68cd1846e769be73cb04d52f252baf197d6556f6c5c67c3c","target":"record","created_at":"2026-05-18T01:51:17Z","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":"6e30bfe0bcfe53f6db75e132f27c49d7afae49475c42e65f4af94e602bbf655c","cross_cats_sorted":["physics.atom-ph","physics.comp-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2013-03-05T01:47:51Z","title_canon_sha256":"2ab4740088923a52e4537c3e721d2fe5564d2fa8ad4107bcd67e7e92f2b4732b"},"schema_version":"1.0","source":{"id":"1303.0905","kind":"arxiv","version":3}},"canonical_sha256":"d24bba548806bc14371a051bcc9bff8c9ca8fefc1e8fc0959c4df76d5622fcb4","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d24bba548806bc14371a051bcc9bff8c9ca8fefc1e8fc0959c4df76d5622fcb4","first_computed_at":"2026-05-18T01:51:17.040777Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:17.040777Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"i4219hH6wm+WHYl5LmE5fAt7Wn2E8VIAHzEBg/Gwjh0UJv0v7Mp87+tFfwgwvHwAagGxHhKSPw2HRxDq2VMoCw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:17.041440Z","signed_message":"canonical_sha256_bytes"},"source_id":"1303.0905","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:f3828f5f180b039a68cd1846e769be73cb04d52f252baf197d6556f6c5c67c3c","sha256:c7ce38768ad55157ea614a681d98b575f237120db43b3d01b63881d6a5282cb0"],"state_sha256":"a39a328524b593245b6913c2e2eca3a71b8f751ec60b8ddb7ff21846324fd7af"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0TFhmGAqlbmt77TVrIeRMQ2Tw54SvEwQfMIV7AM4wMxUe9lt24xOq1A3vIaxGVQerDM4zuDgPgVsFBvlMrvzCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-12T08:46:41.624705Z","bundle_sha256":"db5a85b66d3ed872bce965aa4bc3d76978ce27f165fb98cd1a531603a48fb493"}}