{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2018:SPD2ZIJNNQSLCWOOVB2AEYLLMT","short_pith_number":"pith:SPD2ZIJN","canonical_record":{"source":{"id":"1805.07074","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-05-18T07:07:53Z","cross_cats_sorted":[],"title_canon_sha256":"a06843fe1ccdc92ec4e6829e925ed72ac8ed7cb0276e9ea792d48fe7a5b21363","abstract_canon_sha256":"decf764f9978ff70b8eeb25087dbc13f81ed318fea2a11c519c8087e5d17378c"},"schema_version":"1.0"},"canonical_sha256":"93c7aca12d6c24b159cea87402616b64cea36af57bf5ea3742a8fd52e1af9c6f","source":{"kind":"arxiv","id":"1805.07074","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.07074","created_at":"2026-05-18T00:06:50Z"},{"alias_kind":"arxiv_version","alias_value":"1805.07074v1","created_at":"2026-05-18T00:06:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.07074","created_at":"2026-05-18T00:06:50Z"},{"alias_kind":"pith_short_12","alias_value":"SPD2ZIJNNQSL","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SPD2ZIJNNQSLCWOO","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SPD2ZIJN","created_at":"2026-05-18T12:32:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2018:SPD2ZIJNNQSLCWOOVB2AEYLLMT","target":"record","payload":{"canonical_record":{"source":{"id":"1805.07074","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-05-18T07:07:53Z","cross_cats_sorted":[],"title_canon_sha256":"a06843fe1ccdc92ec4e6829e925ed72ac8ed7cb0276e9ea792d48fe7a5b21363","abstract_canon_sha256":"decf764f9978ff70b8eeb25087dbc13f81ed318fea2a11c519c8087e5d17378c"},"schema_version":"1.0"},"canonical_sha256":"93c7aca12d6c24b159cea87402616b64cea36af57bf5ea3742a8fd52e1af9c6f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:06:50.692517Z","signature_b64":"DmijUbolL3gtYSgSwBUN/iCtUWvTIueY2cog8/lqsmI+/QFjx5skg9LN9CVE9C/pXW0vTU18wRTmPLDLCOcOCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"93c7aca12d6c24b159cea87402616b64cea36af57bf5ea3742a8fd52e1af9c6f","last_reissued_at":"2026-05-18T00:06:50.691959Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:06:50.691959Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1805.07074","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":"2026-05-18T00:06:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J9bUOEJxoS2wlFur6TiBoRpop45WjzaAx8dbimFjdCgXh639dcM8XYOjczcgDh5wsW/6HzmYy2mPXi8yRfC/Cw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T12:41:23.376390Z"},"content_sha256":"bc06a43a15024f78a023e442fe326cecddd82db1b1c081634f00427cc6ebfd57","schema_version":"1.0","event_id":"sha256:bc06a43a15024f78a023e442fe326cecddd82db1b1c081634f00427cc6ebfd57"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2018:SPD2ZIJNNQSLCWOOVB2AEYLLMT","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effective Landau theory of ferronematics","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"cond-mat.soft","authors_text":"Grigorii Zarubin, Markus Bier, Siegfried Dietrich","submitted_at":"2018-05-18T07:07:53Z","abstract_excerpt":"An effective Landau-like description of ferronematics, i.e., suspensions of magnetic colloidal particles in a nematic liquid crystal (NLC), is developed in terms of the corresponding magnetization and nematic director fields. The study is based on a microscopic model and on classical density functional theory. Ferronematics are susceptible to weak magnetic fields and they can exhibit a ferromagnetic phase, which has been predicted several decades ago and which has recently been found experimentally. Within the proposed effective Landau theory of ferronematics one has quantitative access, e.g.,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.07074","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":"2026-05-18T00:06:50Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9CI5eYJngnTr9dA4a9pQyGulwjt9GgL1OoYnD1EliqxRHgQ2dsKfx8O6xRi9UMZXjqGRM29wM8gvHT2WhQ3UDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-26T12:41:23.376735Z"},"content_sha256":"403d8c28a9b7586dd169dfd579358c5a712712b5b0cf958c0ba4c563335229ce","schema_version":"1.0","event_id":"sha256:403d8c28a9b7586dd169dfd579358c5a712712b5b0cf958c0ba4c563335229ce"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/SPD2ZIJNNQSLCWOOVB2AEYLLMT/bundle.json","state_url":"https://pith.science/pith/SPD2ZIJNNQSLCWOOVB2AEYLLMT/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/SPD2ZIJNNQSLCWOOVB2AEYLLMT/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":"2026-06-26T12:41:23Z","links":{"resolver":"https://pith.science/pith/SPD2ZIJNNQSLCWOOVB2AEYLLMT","bundle":"https://pith.science/pith/SPD2ZIJNNQSLCWOOVB2AEYLLMT/bundle.json","state":"https://pith.science/pith/SPD2ZIJNNQSLCWOOVB2AEYLLMT/state.json","well_known_bundle":"https://pith.science/.well-known/pith/SPD2ZIJNNQSLCWOOVB2AEYLLMT/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:SPD2ZIJNNQSLCWOOVB2AEYLLMT","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":"decf764f9978ff70b8eeb25087dbc13f81ed318fea2a11c519c8087e5d17378c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-05-18T07:07:53Z","title_canon_sha256":"a06843fe1ccdc92ec4e6829e925ed72ac8ed7cb0276e9ea792d48fe7a5b21363"},"schema_version":"1.0","source":{"id":"1805.07074","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1805.07074","created_at":"2026-05-18T00:06:50Z"},{"alias_kind":"arxiv_version","alias_value":"1805.07074v1","created_at":"2026-05-18T00:06:50Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1805.07074","created_at":"2026-05-18T00:06:50Z"},{"alias_kind":"pith_short_12","alias_value":"SPD2ZIJNNQSL","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_16","alias_value":"SPD2ZIJNNQSLCWOO","created_at":"2026-05-18T12:32:53Z"},{"alias_kind":"pith_short_8","alias_value":"SPD2ZIJN","created_at":"2026-05-18T12:32:53Z"}],"graph_snapshots":[{"event_id":"sha256:403d8c28a9b7586dd169dfd579358c5a712712b5b0cf958c0ba4c563335229ce","target":"graph","created_at":"2026-05-18T00:06:50Z","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":"An effective Landau-like description of ferronematics, i.e., suspensions of magnetic colloidal particles in a nematic liquid crystal (NLC), is developed in terms of the corresponding magnetization and nematic director fields. The study is based on a microscopic model and on classical density functional theory. Ferronematics are susceptible to weak magnetic fields and they can exhibit a ferromagnetic phase, which has been predicted several decades ago and which has recently been found experimentally. Within the proposed effective Landau theory of ferronematics one has quantitative access, e.g.,","authors_text":"Grigorii Zarubin, Markus Bier, Siegfried Dietrich","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-05-18T07:07:53Z","title":"Effective Landau theory of ferronematics"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.07074","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:bc06a43a15024f78a023e442fe326cecddd82db1b1c081634f00427cc6ebfd57","target":"record","created_at":"2026-05-18T00:06:50Z","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":"decf764f9978ff70b8eeb25087dbc13f81ed318fea2a11c519c8087e5d17378c","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2018-05-18T07:07:53Z","title_canon_sha256":"a06843fe1ccdc92ec4e6829e925ed72ac8ed7cb0276e9ea792d48fe7a5b21363"},"schema_version":"1.0","source":{"id":"1805.07074","kind":"arxiv","version":1}},"canonical_sha256":"93c7aca12d6c24b159cea87402616b64cea36af57bf5ea3742a8fd52e1af9c6f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"93c7aca12d6c24b159cea87402616b64cea36af57bf5ea3742a8fd52e1af9c6f","first_computed_at":"2026-05-18T00:06:50.691959Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:06:50.691959Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"DmijUbolL3gtYSgSwBUN/iCtUWvTIueY2cog8/lqsmI+/QFjx5skg9LN9CVE9C/pXW0vTU18wRTmPLDLCOcOCQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:06:50.692517Z","signed_message":"canonical_sha256_bytes"},"source_id":"1805.07074","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:bc06a43a15024f78a023e442fe326cecddd82db1b1c081634f00427cc6ebfd57","sha256:403d8c28a9b7586dd169dfd579358c5a712712b5b0cf958c0ba4c563335229ce"],"state_sha256":"cf682c7a41b9f8a0d2241c9ce9a8a3412d181d72d64889009c54bc8a343bc992"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zTGwYsP2Nrq06eIZD7P6E1Xl9/YHzXf28hDVLan3J8UV/eeMjrDYov/D/vhe78mRK5jgZldeiJ/40NIaM9VaCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-26T12:41:23.378647Z","bundle_sha256":"d2eb9668782d43d658a6be5fd3451c562868b43681f55eff158c6018bd27d0f9"}}