{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:LVF4QBUE4YZCGYG6WXXT3MCOCB","short_pith_number":"pith:LVF4QBUE","canonical_record":{"source":{"id":"1205.2477","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-05-11T10:49:13Z","cross_cats_sorted":[],"title_canon_sha256":"33be9569c4492cc5cb7489a3eb1c168a0d921e01422d50d5244ee518de563759","abstract_canon_sha256":"34c7a6fb45773c104204f85ba0b96039ec1366258842b44a42c972ba9fd4b338"},"schema_version":"1.0"},"canonical_sha256":"5d4bc80684e6322360deb5ef3db04e1072a594f302122899e31fd2c5e14a9e5f","source":{"kind":"arxiv","id":"1205.2477","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.2477","created_at":"2026-05-18T03:35:41Z"},{"alias_kind":"arxiv_version","alias_value":"1205.2477v1","created_at":"2026-05-18T03:35:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.2477","created_at":"2026-05-18T03:35:41Z"},{"alias_kind":"pith_short_12","alias_value":"LVF4QBUE4YZC","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LVF4QBUE4YZCGYG6","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LVF4QBUE","created_at":"2026-05-18T12:27:14Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:LVF4QBUE4YZCGYG6WXXT3MCOCB","target":"record","payload":{"canonical_record":{"source":{"id":"1205.2477","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-05-11T10:49:13Z","cross_cats_sorted":[],"title_canon_sha256":"33be9569c4492cc5cb7489a3eb1c168a0d921e01422d50d5244ee518de563759","abstract_canon_sha256":"34c7a6fb45773c104204f85ba0b96039ec1366258842b44a42c972ba9fd4b338"},"schema_version":"1.0"},"canonical_sha256":"5d4bc80684e6322360deb5ef3db04e1072a594f302122899e31fd2c5e14a9e5f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:35:41.055406Z","signature_b64":"Td063jfms5rNPv7aUk131xEhhseV1L/y/3NIdfIBm1jkZl+n+uJ6R6j/aYXAeKpA819KEfoYSghQLMXOC2g5Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5d4bc80684e6322360deb5ef3db04e1072a594f302122899e31fd2c5e14a9e5f","last_reissued_at":"2026-05-18T03:35:41.054580Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:35:41.054580Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1205.2477","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":"2026-05-18T03:35:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+XCST2a5PIKZdOI9A8pLFmwTsHGUNiiFB5ngODsBnr5CtNlkauc7Uyry23pP+iECW7VYh0TyAGxsdsbWq6x7Bg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:55:58.193195Z"},"content_sha256":"49fdf7123e11972b50f6853c648d54732b9b138e51c7b10e08ffdce14ee48777","schema_version":"1.0","event_id":"sha256:49fdf7123e11972b50f6853c648d54732b9b138e51c7b10e08ffdce14ee48777"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:LVF4QBUE4YZCGYG6WXXT3MCOCB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Optimized Effective Potential Using The Hylleraas Variational Method","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Keith Refson, Nikitas I. Gidopoulos, Stewart J. Clark, Tom W. Hollins","submitted_at":"2012-05-11T10:49:13Z","abstract_excerpt":"In electronic structure calculations the optimized effective potential (OEP) is a method that treats exchange interactions exactly using a local potential within density-functional theory (DFT). We present a method using density functional perturbation theory combined with the Hylleraas variational method for finding the OEP by direct minimization which avoids any sum over unoccupied states. The method has been implemented within the plane-wave, pseudopotential formalism. Band structures for zinc blende semiconductors Si, Ge C, GaAs, CdTe and ZnSe, wurtzite semiconductors InN, GaN and ZnO and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.2477","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":"2026-05-18T03:35:41Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QwtgUMyzkLrbK0vIW46A+2kHZIMHT7lVGiF+aZ+LLQxXXaup+R2zollW3Bc033uke5+/7SoJfejY7Xg9pTDZAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-25T19:55:58.193866Z"},"content_sha256":"6debdc28b3dc525b754fe00407f7f8f992ccba56e9f748e8a2f01811cf6f6471","schema_version":"1.0","event_id":"sha256:6debdc28b3dc525b754fe00407f7f8f992ccba56e9f748e8a2f01811cf6f6471"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LVF4QBUE4YZCGYG6WXXT3MCOCB/bundle.json","state_url":"https://pith.science/pith/LVF4QBUE4YZCGYG6WXXT3MCOCB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LVF4QBUE4YZCGYG6WXXT3MCOCB/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":"2026-05-25T19:55:58Z","links":{"resolver":"https://pith.science/pith/LVF4QBUE4YZCGYG6WXXT3MCOCB","bundle":"https://pith.science/pith/LVF4QBUE4YZCGYG6WXXT3MCOCB/bundle.json","state":"https://pith.science/pith/LVF4QBUE4YZCGYG6WXXT3MCOCB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LVF4QBUE4YZCGYG6WXXT3MCOCB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:LVF4QBUE4YZCGYG6WXXT3MCOCB","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":"34c7a6fb45773c104204f85ba0b96039ec1366258842b44a42c972ba9fd4b338","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-05-11T10:49:13Z","title_canon_sha256":"33be9569c4492cc5cb7489a3eb1c168a0d921e01422d50d5244ee518de563759"},"schema_version":"1.0","source":{"id":"1205.2477","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.2477","created_at":"2026-05-18T03:35:41Z"},{"alias_kind":"arxiv_version","alias_value":"1205.2477v1","created_at":"2026-05-18T03:35:41Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.2477","created_at":"2026-05-18T03:35:41Z"},{"alias_kind":"pith_short_12","alias_value":"LVF4QBUE4YZC","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_16","alias_value":"LVF4QBUE4YZCGYG6","created_at":"2026-05-18T12:27:14Z"},{"alias_kind":"pith_short_8","alias_value":"LVF4QBUE","created_at":"2026-05-18T12:27:14Z"}],"graph_snapshots":[{"event_id":"sha256:6debdc28b3dc525b754fe00407f7f8f992ccba56e9f748e8a2f01811cf6f6471","target":"graph","created_at":"2026-05-18T03:35:41Z","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":"In electronic structure calculations the optimized effective potential (OEP) is a method that treats exchange interactions exactly using a local potential within density-functional theory (DFT). We present a method using density functional perturbation theory combined with the Hylleraas variational method for finding the OEP by direct minimization which avoids any sum over unoccupied states. The method has been implemented within the plane-wave, pseudopotential formalism. Band structures for zinc blende semiconductors Si, Ge C, GaAs, CdTe and ZnSe, wurtzite semiconductors InN, GaN and ZnO and ","authors_text":"Keith Refson, Nikitas I. Gidopoulos, Stewart J. Clark, Tom W. Hollins","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-05-11T10:49:13Z","title":"Optimized Effective Potential Using The Hylleraas Variational Method"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.2477","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":"sha256:49fdf7123e11972b50f6853c648d54732b9b138e51c7b10e08ffdce14ee48777","target":"record","created_at":"2026-05-18T03:35:41Z","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":"34c7a6fb45773c104204f85ba0b96039ec1366258842b44a42c972ba9fd4b338","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2012-05-11T10:49:13Z","title_canon_sha256":"33be9569c4492cc5cb7489a3eb1c168a0d921e01422d50d5244ee518de563759"},"schema_version":"1.0","source":{"id":"1205.2477","kind":"arxiv","version":1}},"canonical_sha256":"5d4bc80684e6322360deb5ef3db04e1072a594f302122899e31fd2c5e14a9e5f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5d4bc80684e6322360deb5ef3db04e1072a594f302122899e31fd2c5e14a9e5f","first_computed_at":"2026-05-18T03:35:41.054580Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:35:41.054580Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Td063jfms5rNPv7aUk131xEhhseV1L/y/3NIdfIBm1jkZl+n+uJ6R6j/aYXAeKpA819KEfoYSghQLMXOC2g5Bg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:35:41.055406Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.2477","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:49fdf7123e11972b50f6853c648d54732b9b138e51c7b10e08ffdce14ee48777","sha256:6debdc28b3dc525b754fe00407f7f8f992ccba56e9f748e8a2f01811cf6f6471"],"state_sha256":"f77504aa4fa63ac7da444c27932be61a9db74172fef27ab61cc8215354ffbcae"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"jjUoPdUIg2/aZ+rRL6/pxmGFh4R4QpqbWV1Tr38D784mCYh+8IGC24h0+Ssxx7nPbhUd7W0J+Rwmz9HfsyKdDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-25T19:55:58.196361Z","bundle_sha256":"216fe67b53f02dabad302c426efd4c82380b0b9d63970cd3f93d1edbbec737c6"}}