{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2017:XLPK3D2VHYZLDZ7YL5QKZ3Y6GA","short_pith_number":"pith:XLPK3D2V","canonical_record":{"source":{"id":"1703.00824","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-03-02T15:05:41Z","cross_cats_sorted":[],"title_canon_sha256":"1ed1d6aad3981249872271283fb248eace7e19f91f25959fa2668bf19569cf6e","abstract_canon_sha256":"7153fb205482895187093ae03d32bcd9dde1a0d0d1ca253aaa8b8db6382bfc29"},"schema_version":"1.0"},"canonical_sha256":"badead8f553e32b1e7f85f60acef1e30290d24f75fc7f26ffc27a549e305aa1d","source":{"kind":"arxiv","id":"1703.00824","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.00824","created_at":"2026-05-18T00:38:03Z"},{"alias_kind":"arxiv_version","alias_value":"1703.00824v2","created_at":"2026-05-18T00:38:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.00824","created_at":"2026-05-18T00:38:03Z"},{"alias_kind":"pith_short_12","alias_value":"XLPK3D2VHYZL","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"XLPK3D2VHYZLDZ7Y","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"XLPK3D2V","created_at":"2026-05-18T12:31:56Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2017:XLPK3D2VHYZLDZ7YL5QKZ3Y6GA","target":"record","payload":{"canonical_record":{"source":{"id":"1703.00824","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-03-02T15:05:41Z","cross_cats_sorted":[],"title_canon_sha256":"1ed1d6aad3981249872271283fb248eace7e19f91f25959fa2668bf19569cf6e","abstract_canon_sha256":"7153fb205482895187093ae03d32bcd9dde1a0d0d1ca253aaa8b8db6382bfc29"},"schema_version":"1.0"},"canonical_sha256":"badead8f553e32b1e7f85f60acef1e30290d24f75fc7f26ffc27a549e305aa1d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:38:03.437920Z","signature_b64":"TZdmK6UR36nqEy3Lvx9xrTNESRKeJdoYPlXlFlANr4AAa7bGRT8Wiujim+nmehbNTnZpMXbiiVlVNRPJCBLiCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"badead8f553e32b1e7f85f60acef1e30290d24f75fc7f26ffc27a549e305aa1d","last_reissued_at":"2026-05-18T00:38:03.437335Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:38:03.437335Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1703.00824","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":"2026-05-18T00:38:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"h31eD6vwX6TJvW6AvNJwjDt//pUWYPxvrcAicQvQKm2RPxoENVWtm9U+Th8TndoN3ScS8Drntd0mpgzoz/UIDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T01:58:07.350155Z"},"content_sha256":"600f0505b54b95990adfe6e183aa314c5e62ba6f939f951fb890d91ad6ccbf39","schema_version":"1.0","event_id":"sha256:600f0505b54b95990adfe6e183aa314c5e62ba6f939f951fb890d91ad6ccbf39"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2017:XLPK3D2VHYZLDZ7YL5QKZ3Y6GA","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Density functional theory for dense nematics with steric interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Eduardo S. Nascimento, Epifanio G. Virga, Jamie M. Taylor, Peter Palffy-Muhoray, Xiaoyu Zheng","submitted_at":"2017-03-02T15:05:41Z","abstract_excerpt":"The celebrated work of Onsager on hard particle systems, based on the truncated second order virial expansion, is valid at relatively low volume fractions for large aspect ratio particles. While it predicts the isotropic-nematic phase transition, it fails to provide a realistic equation of state in that the pressure remains finite for arbitrarily high densities. In this work, we derive a mean field density functional form of the Helmholtz free energy for nematics with hard core repulsion. In addition to predicting the isotropic-nematic transition, the model provides a more realistic equation o"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.00824","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":"2026-05-18T00:38:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gw4OTOncn0oVN7fIknH/i0oLxUJI1PyMFkdNzhxxFo6tKX+EVBzIhvSo8GiJLzI1aPvry+cBg6TAVhLg30NcBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-22T01:58:07.350685Z"},"content_sha256":"9dfee44a787d47275307e3295daddd7350d1615ceda0d5a9598ed2ea0c56b94f","schema_version":"1.0","event_id":"sha256:9dfee44a787d47275307e3295daddd7350d1615ceda0d5a9598ed2ea0c56b94f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XLPK3D2VHYZLDZ7YL5QKZ3Y6GA/bundle.json","state_url":"https://pith.science/pith/XLPK3D2VHYZLDZ7YL5QKZ3Y6GA/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XLPK3D2VHYZLDZ7YL5QKZ3Y6GA/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":"2026-05-22T01:58:07Z","links":{"resolver":"https://pith.science/pith/XLPK3D2VHYZLDZ7YL5QKZ3Y6GA","bundle":"https://pith.science/pith/XLPK3D2VHYZLDZ7YL5QKZ3Y6GA/bundle.json","state":"https://pith.science/pith/XLPK3D2VHYZLDZ7YL5QKZ3Y6GA/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XLPK3D2VHYZLDZ7YL5QKZ3Y6GA/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2017:XLPK3D2VHYZLDZ7YL5QKZ3Y6GA","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":"7153fb205482895187093ae03d32bcd9dde1a0d0d1ca253aaa8b8db6382bfc29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-03-02T15:05:41Z","title_canon_sha256":"1ed1d6aad3981249872271283fb248eace7e19f91f25959fa2668bf19569cf6e"},"schema_version":"1.0","source":{"id":"1703.00824","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1703.00824","created_at":"2026-05-18T00:38:03Z"},{"alias_kind":"arxiv_version","alias_value":"1703.00824v2","created_at":"2026-05-18T00:38:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1703.00824","created_at":"2026-05-18T00:38:03Z"},{"alias_kind":"pith_short_12","alias_value":"XLPK3D2VHYZL","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_16","alias_value":"XLPK3D2VHYZLDZ7Y","created_at":"2026-05-18T12:31:56Z"},{"alias_kind":"pith_short_8","alias_value":"XLPK3D2V","created_at":"2026-05-18T12:31:56Z"}],"graph_snapshots":[{"event_id":"sha256:9dfee44a787d47275307e3295daddd7350d1615ceda0d5a9598ed2ea0c56b94f","target":"graph","created_at":"2026-05-18T00:38:03Z","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":"The celebrated work of Onsager on hard particle systems, based on the truncated second order virial expansion, is valid at relatively low volume fractions for large aspect ratio particles. While it predicts the isotropic-nematic phase transition, it fails to provide a realistic equation of state in that the pressure remains finite for arbitrarily high densities. In this work, we derive a mean field density functional form of the Helmholtz free energy for nematics with hard core repulsion. In addition to predicting the isotropic-nematic transition, the model provides a more realistic equation o","authors_text":"Eduardo S. Nascimento, Epifanio G. Virga, Jamie M. Taylor, Peter Palffy-Muhoray, Xiaoyu Zheng","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-03-02T15:05:41Z","title":"Density functional theory for dense nematics with steric interactions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1703.00824","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":"sha256:600f0505b54b95990adfe6e183aa314c5e62ba6f939f951fb890d91ad6ccbf39","target":"record","created_at":"2026-05-18T00:38:03Z","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":"7153fb205482895187093ae03d32bcd9dde1a0d0d1ca253aaa8b8db6382bfc29","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2017-03-02T15:05:41Z","title_canon_sha256":"1ed1d6aad3981249872271283fb248eace7e19f91f25959fa2668bf19569cf6e"},"schema_version":"1.0","source":{"id":"1703.00824","kind":"arxiv","version":2}},"canonical_sha256":"badead8f553e32b1e7f85f60acef1e30290d24f75fc7f26ffc27a549e305aa1d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"badead8f553e32b1e7f85f60acef1e30290d24f75fc7f26ffc27a549e305aa1d","first_computed_at":"2026-05-18T00:38:03.437335Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:38:03.437335Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"TZdmK6UR36nqEy3Lvx9xrTNESRKeJdoYPlXlFlANr4AAa7bGRT8Wiujim+nmehbNTnZpMXbiiVlVNRPJCBLiCA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:38:03.437920Z","signed_message":"canonical_sha256_bytes"},"source_id":"1703.00824","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:600f0505b54b95990adfe6e183aa314c5e62ba6f939f951fb890d91ad6ccbf39","sha256:9dfee44a787d47275307e3295daddd7350d1615ceda0d5a9598ed2ea0c56b94f"],"state_sha256":"cbf86e980b07419b685f9f4e55360f3e117dff952f8fcc55225c8f27273b7d9d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xZPm8NppBOWzuZLRQNYnJj7948ljI7jPqQK3zKcbhwh82HTeP2tlwvjuJRveZk0aVwaGeFhg1sorgaAWF/BGAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-22T01:58:07.354182Z","bundle_sha256":"51d5005f711916d13cefdbd5c80804bbf5729db583246b581bd5cc4431c59dd8"}}