{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:VXVDN2BQXJOEYPCQU3HJULLXIE","short_pith_number":"pith:VXVDN2BQ","canonical_record":{"source":{"id":"1808.02951","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-08-08T21:56:59Z","cross_cats_sorted":[],"title_canon_sha256":"b43f2ab21959d5525c85acde1de01879faabd8bbfe493c0f225d8c400a0b4bfe","abstract_canon_sha256":"838ddb83339c10a15e2ed5cab3b707d62db50e54db4b77c6d2727591c74b673c"},"schema_version":"1.0"},"canonical_sha256":"adea36e830ba5c4c3c50a6ce9a2d77410eb4f78c6011d5548d9566866311899e","source":{"kind":"arxiv","id":"1808.02951","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.02951","created_at":"2026-05-18T00:00:51Z"},{"alias_kind":"arxiv_version","alias_value":"1808.02951v1","created_at":"2026-05-18T00:00:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.02951","created_at":"2026-05-18T00:00:51Z"},{"alias_kind":"pith_short_12","alias_value":"VXVDN2BQXJOE","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VXVDN2BQXJOEYPCQ","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VXVDN2BQ","created_at":"2026-05-18T12:32:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:VXVDN2BQXJOEYPCQU3HJULLXIE","target":"record","payload":{"canonical_record":{"source":{"id":"1808.02951","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-08-08T21:56:59Z","cross_cats_sorted":[],"title_canon_sha256":"b43f2ab21959d5525c85acde1de01879faabd8bbfe493c0f225d8c400a0b4bfe","abstract_canon_sha256":"838ddb83339c10a15e2ed5cab3b707d62db50e54db4b77c6d2727591c74b673c"},"schema_version":"1.0"},"canonical_sha256":"adea36e830ba5c4c3c50a6ce9a2d77410eb4f78c6011d5548d9566866311899e","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:00:51.174712Z","signature_b64":"w4kjLGR5LuMu3N5z1DiVXivDn3dm4l7FO+TFPeGr6l2afuYel6giu5IGyzOmtPER39OxqtfLULKvaNEwvVzfCg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"adea36e830ba5c4c3c50a6ce9a2d77410eb4f78c6011d5548d9566866311899e","last_reissued_at":"2026-05-18T00:00:51.174177Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:00:51.174177Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1808.02951","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":"2026-05-18T00:00:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Qt1YaA2RBcx1aZb0KYfAsg7YWepWlvl1GMGciAOTqXbSZC8e7cKLPu2GwMJoeiukNZbriekmyEELpWgi2jpcBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T13:00:17.544909Z"},"content_sha256":"0b429272a537d8b16cf39e51a329c5c41887f4a1bfd4bce108dae6b77d65cda0","schema_version":"1.0","event_id":"sha256:0b429272a537d8b16cf39e51a329c5c41887f4a1bfd4bce108dae6b77d65cda0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:VXVDN2BQXJOEYPCQU3HJULLXIE","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Constructing a Non-additive Non-interacting Kinetic Energy Functional Approximation for Covalent Bonds from Exact Conditions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.chem-ph","authors_text":"Adam Wasserman, Jonathan Nafziger, Kaili Jiang","submitted_at":"2018-08-08T21:56:59Z","abstract_excerpt":"We present a non-decomposable approximation for the non-additive non-interacting kinetic energy (NAKE) for covalent bonds based on the exact behavior of the von Weizs\\\"{a}cker (vW) functional in regions dominated by one orbital. This covalent approximation (CA) seamlessly combines the vW and the Thomas-Fermi (TF) functional with a switching function of the fragment densities constructed to satisfy exact constraints. It also makes use of ensembles and fractionally-occupied spin-orbitals to yield highly accurate NAKE for stretched bonds while outperforming other standard NAKE approximations near"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.02951","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":"2026-05-18T00:00:51Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"qPLQNexAwIt4//O6v7IDIrvAf5V3OZ/KA/+b0Lk7+8l5phIImqBrfbG26kN3grkWdG8Jw37KXcYIhja2Nbu7BQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T13:00:17.545260Z"},"content_sha256":"321794794140807d0487d4e26b45782e805754c8be258d683bd94fc2f812ed83","schema_version":"1.0","event_id":"sha256:321794794140807d0487d4e26b45782e805754c8be258d683bd94fc2f812ed83"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/VXVDN2BQXJOEYPCQU3HJULLXIE/bundle.json","state_url":"https://pith.science/pith/VXVDN2BQXJOEYPCQU3HJULLXIE/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/VXVDN2BQXJOEYPCQU3HJULLXIE/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":"2026-05-30T13:00:17Z","links":{"resolver":"https://pith.science/pith/VXVDN2BQXJOEYPCQU3HJULLXIE","bundle":"https://pith.science/pith/VXVDN2BQXJOEYPCQU3HJULLXIE/bundle.json","state":"https://pith.science/pith/VXVDN2BQXJOEYPCQU3HJULLXIE/state.json","well_known_bundle":"https://pith.science/.well-known/pith/VXVDN2BQXJOEYPCQU3HJULLXIE/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VXVDN2BQXJOEYPCQU3HJULLXIE","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":"838ddb83339c10a15e2ed5cab3b707d62db50e54db4b77c6d2727591c74b673c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-08-08T21:56:59Z","title_canon_sha256":"b43f2ab21959d5525c85acde1de01879faabd8bbfe493c0f225d8c400a0b4bfe"},"schema_version":"1.0","source":{"id":"1808.02951","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.02951","created_at":"2026-05-18T00:00:51Z"},{"alias_kind":"arxiv_version","alias_value":"1808.02951v1","created_at":"2026-05-18T00:00:51Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.02951","created_at":"2026-05-18T00:00:51Z"},{"alias_kind":"pith_short_12","alias_value":"VXVDN2BQXJOE","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VXVDN2BQXJOEYPCQ","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VXVDN2BQ","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:321794794140807d0487d4e26b45782e805754c8be258d683bd94fc2f812ed83","target":"graph","created_at":"2026-05-18T00:00:51Z","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 present a non-decomposable approximation for the non-additive non-interacting kinetic energy (NAKE) for covalent bonds based on the exact behavior of the von Weizs\\\"{a}cker (vW) functional in regions dominated by one orbital. This covalent approximation (CA) seamlessly combines the vW and the Thomas-Fermi (TF) functional with a switching function of the fragment densities constructed to satisfy exact constraints. It also makes use of ensembles and fractionally-occupied spin-orbitals to yield highly accurate NAKE for stretched bonds while outperforming other standard NAKE approximations near","authors_text":"Adam Wasserman, Jonathan Nafziger, Kaili Jiang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-08-08T21:56:59Z","title":"Constructing a Non-additive Non-interacting Kinetic Energy Functional Approximation for Covalent Bonds from Exact Conditions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.02951","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":"sha256:0b429272a537d8b16cf39e51a329c5c41887f4a1bfd4bce108dae6b77d65cda0","target":"record","created_at":"2026-05-18T00:00:51Z","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":"838ddb83339c10a15e2ed5cab3b707d62db50e54db4b77c6d2727591c74b673c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.chem-ph","submitted_at":"2018-08-08T21:56:59Z","title_canon_sha256":"b43f2ab21959d5525c85acde1de01879faabd8bbfe493c0f225d8c400a0b4bfe"},"schema_version":"1.0","source":{"id":"1808.02951","kind":"arxiv","version":1}},"canonical_sha256":"adea36e830ba5c4c3c50a6ce9a2d77410eb4f78c6011d5548d9566866311899e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"adea36e830ba5c4c3c50a6ce9a2d77410eb4f78c6011d5548d9566866311899e","first_computed_at":"2026-05-18T00:00:51.174177Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:00:51.174177Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"w4kjLGR5LuMu3N5z1DiVXivDn3dm4l7FO+TFPeGr6l2afuYel6giu5IGyzOmtPER39OxqtfLULKvaNEwvVzfCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:00:51.174712Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.02951","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0b429272a537d8b16cf39e51a329c5c41887f4a1bfd4bce108dae6b77d65cda0","sha256:321794794140807d0487d4e26b45782e805754c8be258d683bd94fc2f812ed83"],"state_sha256":"9af4a0692644b70d1157e5dcb16aafc35d4be7ef281649045e6bdc8766131d26"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3Lj1nEkRugDKh3+elXW5/Ll9Y+a2d5mPLubrNu3QXws5EMkjrlf9TbiruhkOLgvGOAvpm2O/s3M6CdHM/AHTAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T13:00:17.547490Z","bundle_sha256":"73c935e8e4c4cc006dce195a7478d605a5c22df26536f63c98b2127a1cafb599"}}