{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:VLOIIRFT7ZX4EOC4RQ2N2ZLJSA","short_pith_number":"pith:VLOIIRFT","canonical_record":{"source":{"id":"1212.3054","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2012-12-13T05:33:56Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"48dd97bfbf2c145376f54f19499dd48aed6e3151c665a02b4d8b118415b46f13","abstract_canon_sha256":"07517e94ffd3cdf46725d046950ea2e2376e11f43faa62f96847e4b1bf47bf8b"},"schema_version":"1.0"},"canonical_sha256":"aadc8444b3fe6fc2385c8c34dd65699011b858fc707c624065c6161641c29dee","source":{"kind":"arxiv","id":"1212.3054","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.3054","created_at":"2026-05-18T01:52:39Z"},{"alias_kind":"arxiv_version","alias_value":"1212.3054v3","created_at":"2026-05-18T01:52:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.3054","created_at":"2026-05-18T01:52:39Z"},{"alias_kind":"pith_short_12","alias_value":"VLOIIRFT7ZX4","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VLOIIRFT7ZX4EOC4","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VLOIIRFT","created_at":"2026-05-18T12:27:25Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:VLOIIRFT7ZX4EOC4RQ2N2ZLJSA","target":"record","payload":{"canonical_record":{"source":{"id":"1212.3054","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2012-12-13T05:33:56Z","cross_cats_sorted":["cond-mat.other"],"title_canon_sha256":"48dd97bfbf2c145376f54f19499dd48aed6e3151c665a02b4d8b118415b46f13","abstract_canon_sha256":"07517e94ffd3cdf46725d046950ea2e2376e11f43faa62f96847e4b1bf47bf8b"},"schema_version":"1.0"},"canonical_sha256":"aadc8444b3fe6fc2385c8c34dd65699011b858fc707c624065c6161641c29dee","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:52:39.124245Z","signature_b64":"hu3ZrTWaqZOREzeU+aWkzR3/BLnE8BLVRb11zLXfHa4WoTasECfBd8rtvRScoAMe0oAllt5WoqCkNTiEJ2E/Cw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"aadc8444b3fe6fc2385c8c34dd65699011b858fc707c624065c6161641c29dee","last_reissued_at":"2026-05-18T01:52:39.123811Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:52:39.123811Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1212.3054","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":"2026-05-18T01:52:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AACFufb+UPmFiW5PErfUI56YMUBmD/MoIxyX7Rb7oFAjAiFKIyl1ov4yYMx+GP4vgQArb8vPCwj5WxPo7qqXCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:56:21.415017Z"},"content_sha256":"8ac10ea2c44822b1dc78d0255af3a168b36c218764511cefe68352ee34775e9c","schema_version":"1.0","event_id":"sha256:8ac10ea2c44822b1dc78d0255af3a168b36c218764511cefe68352ee34775e9c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:VLOIIRFT7ZX4EOC4RQ2N2ZLJSA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Understanding and reducing errors in density functional calculations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cond-mat.other"],"primary_cat":"physics.chem-ph","authors_text":"Eunji Sim, Kieron Burke, Min-Cheol Kim","submitted_at":"2012-12-13T05:33:56Z","abstract_excerpt":"We decompose the energy error of any variational DFT calculation into a contribution due to the approximate functional and that due to the approximate density. Typically, the functional error dominates, but in many interesting situations, the density-driven error dominates. Examples range from calculations of electron affinities to preferred geometries of ions and radicals in solution. In these abnormal cases, the DFT error can be greatly reduced by using a more accurate density. A small orbital gap often indicates a substantial density-driven error."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.3054","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":"2026-05-18T01:52:39Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"bU+0fMs8F/1CvfqZgx8bqWVzxPb4sukTWrhm/k596EfQsHuzux+tnhCGvv47DZjzmxYQUS1zk5sKgecWaTPdCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T21:56:21.415377Z"},"content_sha256":"03bd3acb731bd00f26c6383c19010945e53940fc5ea1b8afa27c62995b737f92","schema_version":"1.0","event_id":"sha256:03bd3acb731bd00f26c6383c19010945e53940fc5ea1b8afa27c62995b737f92"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VLOIIRFT7ZX4EOC4RQ2N2ZLJSA/bundle.json","state_url":"https://pith.science/pith/VLOIIRFT7ZX4EOC4RQ2N2ZLJSA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VLOIIRFT7ZX4EOC4RQ2N2ZLJSA/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":"2026-05-28T21:56:21Z","links":{"resolver":"https://pith.science/pith/VLOIIRFT7ZX4EOC4RQ2N2ZLJSA","bundle":"https://pith.science/pith/VLOIIRFT7ZX4EOC4RQ2N2ZLJSA/bundle.json","state":"https://pith.science/pith/VLOIIRFT7ZX4EOC4RQ2N2ZLJSA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VLOIIRFT7ZX4EOC4RQ2N2ZLJSA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:VLOIIRFT7ZX4EOC4RQ2N2ZLJSA","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":"07517e94ffd3cdf46725d046950ea2e2376e11f43faa62f96847e4b1bf47bf8b","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2012-12-13T05:33:56Z","title_canon_sha256":"48dd97bfbf2c145376f54f19499dd48aed6e3151c665a02b4d8b118415b46f13"},"schema_version":"1.0","source":{"id":"1212.3054","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1212.3054","created_at":"2026-05-18T01:52:39Z"},{"alias_kind":"arxiv_version","alias_value":"1212.3054v3","created_at":"2026-05-18T01:52:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1212.3054","created_at":"2026-05-18T01:52:39Z"},{"alias_kind":"pith_short_12","alias_value":"VLOIIRFT7ZX4","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_16","alias_value":"VLOIIRFT7ZX4EOC4","created_at":"2026-05-18T12:27:25Z"},{"alias_kind":"pith_short_8","alias_value":"VLOIIRFT","created_at":"2026-05-18T12:27:25Z"}],"graph_snapshots":[{"event_id":"sha256:03bd3acb731bd00f26c6383c19010945e53940fc5ea1b8afa27c62995b737f92","target":"graph","created_at":"2026-05-18T01:52:39Z","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 decompose the energy error of any variational DFT calculation into a contribution due to the approximate functional and that due to the approximate density. Typically, the functional error dominates, but in many interesting situations, the density-driven error dominates. Examples range from calculations of electron affinities to preferred geometries of ions and radicals in solution. In these abnormal cases, the DFT error can be greatly reduced by using a more accurate density. A small orbital gap often indicates a substantial density-driven error.","authors_text":"Eunji Sim, Kieron Burke, Min-Cheol Kim","cross_cats":["cond-mat.other"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2012-12-13T05:33:56Z","title":"Understanding and reducing errors in density functional calculations"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1212.3054","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":"sha256:8ac10ea2c44822b1dc78d0255af3a168b36c218764511cefe68352ee34775e9c","target":"record","created_at":"2026-05-18T01:52:39Z","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":"07517e94ffd3cdf46725d046950ea2e2376e11f43faa62f96847e4b1bf47bf8b","cross_cats_sorted":["cond-mat.other"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2012-12-13T05:33:56Z","title_canon_sha256":"48dd97bfbf2c145376f54f19499dd48aed6e3151c665a02b4d8b118415b46f13"},"schema_version":"1.0","source":{"id":"1212.3054","kind":"arxiv","version":3}},"canonical_sha256":"aadc8444b3fe6fc2385c8c34dd65699011b858fc707c624065c6161641c29dee","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"aadc8444b3fe6fc2385c8c34dd65699011b858fc707c624065c6161641c29dee","first_computed_at":"2026-05-18T01:52:39.123811Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:52:39.123811Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"hu3ZrTWaqZOREzeU+aWkzR3/BLnE8BLVRb11zLXfHa4WoTasECfBd8rtvRScoAMe0oAllt5WoqCkNTiEJ2E/Cw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:52:39.124245Z","signed_message":"canonical_sha256_bytes"},"source_id":"1212.3054","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:8ac10ea2c44822b1dc78d0255af3a168b36c218764511cefe68352ee34775e9c","sha256:03bd3acb731bd00f26c6383c19010945e53940fc5ea1b8afa27c62995b737f92"],"state_sha256":"a605a51a93d110390f520f64b605bc47e9652c06501206aba2f139cff450172f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"GTt3Gv80CEyo1pqQ5/1Hmz1VKA/XwtW9l9zKMPyD5Yrlv9hVj4TqnXfJgT1brStFQse7eD44oaUN59VagsMUBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T21:56:21.417492Z","bundle_sha256":"76ecd18e263c10a5895d3c724797abefdce84afdded19587856d9bdd7cf34826"}}