{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:6SCB7HZWN6BK7ADNOESM2LIGB6","short_pith_number":"pith:6SCB7HZW","canonical_record":{"source":{"id":"1504.06368","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-24T00:00:48Z","cross_cats_sorted":[],"title_canon_sha256":"2c0bd5c2f6f03cc61ea0095b72c225314c1cdfe719efbddf8c0b25bce01be44f","abstract_canon_sha256":"3004346a0776ace12f46ff9caaa9911027bb90ccb4e689789b70ea45d51a6abb"},"schema_version":"1.0"},"canonical_sha256":"f4841f9f366f82af806d7124cd2d060faf387d47c78b1eca004aa2bd40dd4e9d","source":{"kind":"arxiv","id":"1504.06368","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.06368","created_at":"2026-05-18T01:51:24Z"},{"alias_kind":"arxiv_version","alias_value":"1504.06368v2","created_at":"2026-05-18T01:51:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.06368","created_at":"2026-05-18T01:51:24Z"},{"alias_kind":"pith_short_12","alias_value":"6SCB7HZWN6BK","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6SCB7HZWN6BK7ADN","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6SCB7HZW","created_at":"2026-05-18T12:29:07Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:6SCB7HZWN6BK7ADNOESM2LIGB6","target":"record","payload":{"canonical_record":{"source":{"id":"1504.06368","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-24T00:00:48Z","cross_cats_sorted":[],"title_canon_sha256":"2c0bd5c2f6f03cc61ea0095b72c225314c1cdfe719efbddf8c0b25bce01be44f","abstract_canon_sha256":"3004346a0776ace12f46ff9caaa9911027bb90ccb4e689789b70ea45d51a6abb"},"schema_version":"1.0"},"canonical_sha256":"f4841f9f366f82af806d7124cd2d060faf387d47c78b1eca004aa2bd40dd4e9d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:51:24.805289Z","signature_b64":"6aHIXg28tFMTbZsVuEcvwuvSM1WaRf3BIcv5Nzf8rZQq2XpLTkNnCZ5E5hUcPETPGHt+IXFmegMtp0LoDECoBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f4841f9f366f82af806d7124cd2d060faf387d47c78b1eca004aa2bd40dd4e9d","last_reissued_at":"2026-05-18T01:51:24.804221Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:51:24.804221Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1504.06368","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:51:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4b51Y0KUv8cxImV6aBuoVcourBOcg/0V+cYC5MZOjHhcP+BPn0nGF9VlcZZFpdUMqSK1+tPs0lqi9ZwEf1+iAw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T08:35:41.754777Z"},"content_sha256":"053802a7baacd5ed6dc694f77132fb3cd7261cb3001fc68308ab563d67d358bb","schema_version":"1.0","event_id":"sha256:053802a7baacd5ed6dc694f77132fb3cd7261cb3001fc68308ab563d67d358bb"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:6SCB7HZWN6BK7ADNOESM2LIGB6","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Real-space formulation of orbital-free density functional theory using finite-element discretization: The case for Al, Mg, and Al-Mg intermetallics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.mtrl-sci","authors_text":"Mrinal Iyer, Sambit Das, Vikram Gavini","submitted_at":"2015-04-24T00:00:48Z","abstract_excerpt":"We propose a local real-space formulation for orbital-free DFT with density dependent kinetic energy functionals and a unified variational framework for computing the configurational forces associated with geometry optimization of both internal atomic positions as well as the cell geometry. The proposed real-space formulation, which involves a reformulation of the extended interactions in electrostatic and kinetic energy functionals as local variational problems in auxiliary potential fields, also readily extends to all-electron orbital-free DFT calculations that are employed in warm dense mat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.06368","kind":"arxiv","version":2},"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":"2026-05-18T01:51:24Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9ZbqDtTvHYONsXHK4tWEXFDkTslOxeLTDjh7mgSqPn+Iy9T1xZkMO3zTH1237XViicnHmh/EI06UdeJrhIgXBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-30T08:35:41.755112Z"},"content_sha256":"8323e25ef46a2a4bcd96188b00609d220479d1a8662bef21a36c0a855a9b6c49","schema_version":"1.0","event_id":"sha256:8323e25ef46a2a4bcd96188b00609d220479d1a8662bef21a36c0a855a9b6c49"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6SCB7HZWN6BK7ADNOESM2LIGB6/bundle.json","state_url":"https://pith.science/pith/6SCB7HZWN6BK7ADNOESM2LIGB6/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6SCB7HZWN6BK7ADNOESM2LIGB6/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":"2026-05-30T08:35:41Z","links":{"resolver":"https://pith.science/pith/6SCB7HZWN6BK7ADNOESM2LIGB6","bundle":"https://pith.science/pith/6SCB7HZWN6BK7ADNOESM2LIGB6/bundle.json","state":"https://pith.science/pith/6SCB7HZWN6BK7ADNOESM2LIGB6/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6SCB7HZWN6BK7ADNOESM2LIGB6/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:6SCB7HZWN6BK7ADNOESM2LIGB6","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":"3004346a0776ace12f46ff9caaa9911027bb90ccb4e689789b70ea45d51a6abb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-24T00:00:48Z","title_canon_sha256":"2c0bd5c2f6f03cc61ea0095b72c225314c1cdfe719efbddf8c0b25bce01be44f"},"schema_version":"1.0","source":{"id":"1504.06368","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1504.06368","created_at":"2026-05-18T01:51:24Z"},{"alias_kind":"arxiv_version","alias_value":"1504.06368v2","created_at":"2026-05-18T01:51:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1504.06368","created_at":"2026-05-18T01:51:24Z"},{"alias_kind":"pith_short_12","alias_value":"6SCB7HZWN6BK","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_16","alias_value":"6SCB7HZWN6BK7ADN","created_at":"2026-05-18T12:29:07Z"},{"alias_kind":"pith_short_8","alias_value":"6SCB7HZW","created_at":"2026-05-18T12:29:07Z"}],"graph_snapshots":[{"event_id":"sha256:8323e25ef46a2a4bcd96188b00609d220479d1a8662bef21a36c0a855a9b6c49","target":"graph","created_at":"2026-05-18T01:51:24Z","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 propose a local real-space formulation for orbital-free DFT with density dependent kinetic energy functionals and a unified variational framework for computing the configurational forces associated with geometry optimization of both internal atomic positions as well as the cell geometry. The proposed real-space formulation, which involves a reformulation of the extended interactions in electrostatic and kinetic energy functionals as local variational problems in auxiliary potential fields, also readily extends to all-electron orbital-free DFT calculations that are employed in warm dense mat","authors_text":"Mrinal Iyer, Sambit Das, Vikram Gavini","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-24T00:00:48Z","title":"Real-space formulation of orbital-free density functional theory using finite-element discretization: The case for Al, Mg, and Al-Mg intermetallics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.06368","kind":"arxiv","version":2},"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":"sha256:053802a7baacd5ed6dc694f77132fb3cd7261cb3001fc68308ab563d67d358bb","target":"record","created_at":"2026-05-18T01:51:24Z","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":"3004346a0776ace12f46ff9caaa9911027bb90ccb4e689789b70ea45d51a6abb","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.mtrl-sci","submitted_at":"2015-04-24T00:00:48Z","title_canon_sha256":"2c0bd5c2f6f03cc61ea0095b72c225314c1cdfe719efbddf8c0b25bce01be44f"},"schema_version":"1.0","source":{"id":"1504.06368","kind":"arxiv","version":2}},"canonical_sha256":"f4841f9f366f82af806d7124cd2d060faf387d47c78b1eca004aa2bd40dd4e9d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f4841f9f366f82af806d7124cd2d060faf387d47c78b1eca004aa2bd40dd4e9d","first_computed_at":"2026-05-18T01:51:24.804221Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:51:24.804221Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"6aHIXg28tFMTbZsVuEcvwuvSM1WaRf3BIcv5Nzf8rZQq2XpLTkNnCZ5E5hUcPETPGHt+IXFmegMtp0LoDECoBg==","signature_status":"signed_v1","signed_at":"2026-05-18T01:51:24.805289Z","signed_message":"canonical_sha256_bytes"},"source_id":"1504.06368","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:053802a7baacd5ed6dc694f77132fb3cd7261cb3001fc68308ab563d67d358bb","sha256:8323e25ef46a2a4bcd96188b00609d220479d1a8662bef21a36c0a855a9b6c49"],"state_sha256":"074bf303c75455445e00f5736b96d57a0341d0d0a23b57e47cce55e833f9c93f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"uopblNy7HYv0Aq27+7AMghnUsAgRgHM/63g0hexLanDDm0A3f1CmtkQxfnPnFpUKDq4gvzkgwtfldTF6LcYFAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-30T08:35:41.757023Z","bundle_sha256":"10302a1560a7560dc47a6265620393dfe0134415b3a6dbc3ab6bc539b58ad1f6"}}