{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:EJ53SNB6TYXR2E2CCPRQK2OPPO","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":"e0d5f5893b684fb282d0488bde25c6b0f1a5d8ecf48f4cd512601337c9ff7162","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2016-10-03T17:31:55Z","title_canon_sha256":"6c67a8b662baee98e377a80824a9ba5dd27d1f0a6aec120fdb455060bc0d3bd8"},"schema_version":"1.0","source":{"id":"1610.00643","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1610.00643","created_at":"2026-05-18T00:33:22Z"},{"alias_kind":"arxiv_version","alias_value":"1610.00643v1","created_at":"2026-05-18T00:33:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1610.00643","created_at":"2026-05-18T00:33:22Z"},{"alias_kind":"pith_short_12","alias_value":"EJ53SNB6TYXR","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_16","alias_value":"EJ53SNB6TYXR2E2C","created_at":"2026-05-18T12:30:12Z"},{"alias_kind":"pith_short_8","alias_value":"EJ53SNB6","created_at":"2026-05-18T12:30:12Z"}],"graph_snapshots":[{"event_id":"sha256:ec8e3790005e0b7f2c0fb0c8929822d4a28ae4944b9ec8f07c89b9acd673e5f3","target":"graph","created_at":"2026-05-18T00:33:22Z","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":"Recently, Tao and Mo proposed an accurate meta-generalized gradient approximation for the exchange-correlation energy. The exchange part is derived from the density matrix expansion, while the correlation part is obtained by improving the TPSS correlation in the low-density limit. To better understand this exchange functional, in this work, we combine the TM exchange with the original TPSS correlation, which we call TMTPSS, and make a systematic assessment on molecular properties. The test sets include the 223 G3/99 enthalpies of formation, 58 electron affinities, 8 proton affinities, 96 bond ","authors_text":"Guocai Tian, Jianmin Tao, Yuxiang Mo","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2016-10-03T17:31:55Z","title":"Performance of a nonempirical exchange functional from the density matrix expansion: comparative study with different correlation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.00643","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:d9a8ccfd30737b448149c0a4e47ab60757c34dd68a0c7ca18602d71f8c94a39a","target":"record","created_at":"2026-05-18T00:33:22Z","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":"e0d5f5893b684fb282d0488bde25c6b0f1a5d8ecf48f4cd512601337c9ff7162","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2016-10-03T17:31:55Z","title_canon_sha256":"6c67a8b662baee98e377a80824a9ba5dd27d1f0a6aec120fdb455060bc0d3bd8"},"schema_version":"1.0","source":{"id":"1610.00643","kind":"arxiv","version":1}},"canonical_sha256":"227bb9343e9e2f1d134213e30569cf7b87c28270305008f79b5145a86891e0fe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"227bb9343e9e2f1d134213e30569cf7b87c28270305008f79b5145a86891e0fe","first_computed_at":"2026-05-18T00:33:22.789100Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:33:22.789100Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"QkBi7nqIC0Kq8ESeGXcMBGCngVbT2bkDXuEJ2QkUCLQKD8Fy3YMEHuGz3AXA6gbol0/cQfFUz1htCwlWh9m6AA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:33:22.789656Z","signed_message":"canonical_sha256_bytes"},"source_id":"1610.00643","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9a8ccfd30737b448149c0a4e47ab60757c34dd68a0c7ca18602d71f8c94a39a","sha256:ec8e3790005e0b7f2c0fb0c8929822d4a28ae4944b9ec8f07c89b9acd673e5f3"],"state_sha256":"24afde47c064d616031e307b44e7e412e400dd900c75daec2e78b832ba37c826"}