{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2025:OSJPTOPAGPFS3VXLIOEW7WHZOX","short_pith_number":"pith:OSJPTOPA","canonical_record":{"source":{"id":"2506.16523","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-06-19T18:06:56Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"f5a419590d1fc10f3789118898d0a7fbb37b236e5732e66767636b5a2c27b531","abstract_canon_sha256":"a7a8557edad809d6a9965977dc1507122a69cc4b6692da1f99e8aeb926d16c08"},"schema_version":"1.0"},"canonical_sha256":"7492f9b9e033cb2dd6eb43896fd8f975e18be1515c2b3f54ac09c85c8963961a","source":{"kind":"arxiv","id":"2506.16523","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.16523","created_at":"2026-07-05T11:24:54Z"},{"alias_kind":"arxiv_version","alias_value":"2506.16523v1","created_at":"2026-07-05T11:24:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.16523","created_at":"2026-07-05T11:24:54Z"},{"alias_kind":"pith_short_12","alias_value":"OSJPTOPAGPFS","created_at":"2026-07-05T11:24:54Z"},{"alias_kind":"pith_short_16","alias_value":"OSJPTOPAGPFS3VXL","created_at":"2026-07-05T11:24:54Z"},{"alias_kind":"pith_short_8","alias_value":"OSJPTOPA","created_at":"2026-07-05T11:24:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2025:OSJPTOPAGPFS3VXLIOEW7WHZOX","target":"record","payload":{"canonical_record":{"source":{"id":"2506.16523","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-06-19T18:06:56Z","cross_cats_sorted":["physics.bio-ph"],"title_canon_sha256":"f5a419590d1fc10f3789118898d0a7fbb37b236e5732e66767636b5a2c27b531","abstract_canon_sha256":"a7a8557edad809d6a9965977dc1507122a69cc4b6692da1f99e8aeb926d16c08"},"schema_version":"1.0"},"canonical_sha256":"7492f9b9e033cb2dd6eb43896fd8f975e18be1515c2b3f54ac09c85c8963961a","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:24:54.265452Z","signature_b64":"KQ8AY510vdp/scqMCxce3CygTrlacur2sEIPYuDfBXrO8xRJEiKKtZBjgVeV97pCYg7XeBLuy7JESz3XxzmgBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"7492f9b9e033cb2dd6eb43896fd8f975e18be1515c2b3f54ac09c85c8963961a","last_reissued_at":"2026-07-05T11:24:54.264969Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:24:54.264969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2506.16523","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":"2026-07-05T11:24:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OQvhgh4vEDDDcMMQa2Lm8kmzVqcsfLdDzoAiv1G1lQwlKyOc0A8+NyMKM7YvyLVhpjq/sK9+L5tyY9m0KHBDAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T05:41:15.760353Z"},"content_sha256":"1fceab7c4caa3df92bc89c4ff92d81909ac08d56281c21acb0a713a297629fca","schema_version":"1.0","event_id":"sha256:1fceab7c4caa3df92bc89c4ff92d81909ac08d56281c21acb0a713a297629fca"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2025:OSJPTOPAGPFS3VXLIOEW7WHZOX","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Thin active nematohydrodynamic layers: asymptotic theories and instabilities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.bio-ph"],"primary_cat":"cond-mat.soft","authors_text":"L. Mahadevan, Mehrana R. Nejad","submitted_at":"2025-06-19T18:06:56Z","abstract_excerpt":"Starting from a three-dimensional description of an active nematic layer, we employ an asymptotic theory to derive a series of low-dimensional continuum models that capture the coupled dynamics of flat and curved films, including variations in film thickness, shape deformations, internal velocity fields, and the dynamics of orientational order.\n  Using this asymptotic theory, we investigate instabilities driven by activity in both the nematic and isotropic phases for cylindrical and flat films. In the flat case, we demonstrate that incorporating shape and thickness variations fundamentally alt"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.16523","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2506.16523/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T11:24:54Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AHOq4ELRMjuIEB+uE4Uu/iaZC/0hYkQdgCdDQMTb6kVb/XoEDWLE7fwy4r1NVh9hfvOZw7WTtDaCHEB5li3UBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-09T05:41:15.760738Z"},"content_sha256":"ba9b97be1fe48548a22d87a04b3dca5ee238804896f54712473d400717e9d1bc","schema_version":"1.0","event_id":"sha256:ba9b97be1fe48548a22d87a04b3dca5ee238804896f54712473d400717e9d1bc"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OSJPTOPAGPFS3VXLIOEW7WHZOX/bundle.json","state_url":"https://pith.science/pith/OSJPTOPAGPFS3VXLIOEW7WHZOX/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OSJPTOPAGPFS3VXLIOEW7WHZOX/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":"2026-07-09T05:41:15Z","links":{"resolver":"https://pith.science/pith/OSJPTOPAGPFS3VXLIOEW7WHZOX","bundle":"https://pith.science/pith/OSJPTOPAGPFS3VXLIOEW7WHZOX/bundle.json","state":"https://pith.science/pith/OSJPTOPAGPFS3VXLIOEW7WHZOX/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OSJPTOPAGPFS3VXLIOEW7WHZOX/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2025:OSJPTOPAGPFS3VXLIOEW7WHZOX","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":"a7a8557edad809d6a9965977dc1507122a69cc4b6692da1f99e8aeb926d16c08","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-06-19T18:06:56Z","title_canon_sha256":"f5a419590d1fc10f3789118898d0a7fbb37b236e5732e66767636b5a2c27b531"},"schema_version":"1.0","source":{"id":"2506.16523","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2506.16523","created_at":"2026-07-05T11:24:54Z"},{"alias_kind":"arxiv_version","alias_value":"2506.16523v1","created_at":"2026-07-05T11:24:54Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2506.16523","created_at":"2026-07-05T11:24:54Z"},{"alias_kind":"pith_short_12","alias_value":"OSJPTOPAGPFS","created_at":"2026-07-05T11:24:54Z"},{"alias_kind":"pith_short_16","alias_value":"OSJPTOPAGPFS3VXL","created_at":"2026-07-05T11:24:54Z"},{"alias_kind":"pith_short_8","alias_value":"OSJPTOPA","created_at":"2026-07-05T11:24:54Z"}],"graph_snapshots":[{"event_id":"sha256:ba9b97be1fe48548a22d87a04b3dca5ee238804896f54712473d400717e9d1bc","target":"graph","created_at":"2026-07-05T11:24:54Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2506.16523/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Starting from a three-dimensional description of an active nematic layer, we employ an asymptotic theory to derive a series of low-dimensional continuum models that capture the coupled dynamics of flat and curved films, including variations in film thickness, shape deformations, internal velocity fields, and the dynamics of orientational order.\n  Using this asymptotic theory, we investigate instabilities driven by activity in both the nematic and isotropic phases for cylindrical and flat films. In the flat case, we demonstrate that incorporating shape and thickness variations fundamentally alt","authors_text":"L. Mahadevan, Mehrana R. Nejad","cross_cats":["physics.bio-ph"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-06-19T18:06:56Z","title":"Thin active nematohydrodynamic layers: asymptotic theories and instabilities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2506.16523","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":"sha256:1fceab7c4caa3df92bc89c4ff92d81909ac08d56281c21acb0a713a297629fca","target":"record","created_at":"2026-07-05T11:24:54Z","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":"a7a8557edad809d6a9965977dc1507122a69cc4b6692da1f99e8aeb926d16c08","cross_cats_sorted":["physics.bio-ph"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cond-mat.soft","submitted_at":"2025-06-19T18:06:56Z","title_canon_sha256":"f5a419590d1fc10f3789118898d0a7fbb37b236e5732e66767636b5a2c27b531"},"schema_version":"1.0","source":{"id":"2506.16523","kind":"arxiv","version":1}},"canonical_sha256":"7492f9b9e033cb2dd6eb43896fd8f975e18be1515c2b3f54ac09c85c8963961a","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"7492f9b9e033cb2dd6eb43896fd8f975e18be1515c2b3f54ac09c85c8963961a","first_computed_at":"2026-07-05T11:24:54.264969Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:24:54.264969Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"KQ8AY510vdp/scqMCxce3CygTrlacur2sEIPYuDfBXrO8xRJEiKKtZBjgVeV97pCYg7XeBLuy7JESz3XxzmgBA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:24:54.265452Z","signed_message":"canonical_sha256_bytes"},"source_id":"2506.16523","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:1fceab7c4caa3df92bc89c4ff92d81909ac08d56281c21acb0a713a297629fca","sha256:ba9b97be1fe48548a22d87a04b3dca5ee238804896f54712473d400717e9d1bc"],"state_sha256":"43ca3ff56b75235595c674d3087712eb7355519af28644863eb4e2b19abce326"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p4sdf66t22PndFDw93d/k69kG928aMcN9g3Es45JPtdo2THY0ecprl3GNXmLIxS6ygRj3SdL96wixXYKUVASCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-09T05:41:15.762862Z","bundle_sha256":"10e4e1603671842cb4e5919e4ed738d5b76b15c5d8024ee693f0f6e276e0e545"}}