{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:ILPYYVK6AWUMLDIIBX6Q5ZMEWM","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":"5293efb6f78ef3f588a95e48e98e236d0e3025a041902db402a6b762cd4763ee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2019-01-09T20:38:05Z","title_canon_sha256":"36de93c0c2990de871bb624d26cd9d49bc8a1ae3c2290842bc62f53a9c7c4eab"},"schema_version":"1.0","source":{"id":"1901.02925","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1901.02925","created_at":"2026-05-17T23:41:24Z"},{"alias_kind":"arxiv_version","alias_value":"1901.02925v2","created_at":"2026-05-17T23:41:24Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1901.02925","created_at":"2026-05-17T23:41:24Z"},{"alias_kind":"pith_short_12","alias_value":"ILPYYVK6AWUM","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_16","alias_value":"ILPYYVK6AWUMLDII","created_at":"2026-05-18T12:33:18Z"},{"alias_kind":"pith_short_8","alias_value":"ILPYYVK6","created_at":"2026-05-18T12:33:18Z"}],"graph_snapshots":[{"event_id":"sha256:957feb181949f2d1e5927908facbeb4c74caba2388abc40424c1902b75100892","target":"graph","created_at":"2026-05-17T23:41:24Z","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 perform linear and nonlinear stability analysis for thermal convection in a fluid overlying a saturated porous medium. We use a coupled system, with the Navier-Stokes equations and Darcy's equation governing the free-flow and the porous regions respectively. Incorporating a dynamic pressure term in the Lions interface condition (which specifies the normal force balance across the fluid-medium interface) permits an energy bound on the typically uncooperative nonlinear advection term, enabling new nonlinear stability results. Within certain regimes, the nonlinear stability thresholds agree cl","authors_text":"M. McCurdy, M.N.J. Moore, X. Wang","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2019-01-09T20:38:05Z","title":"Convection in a coupled fluid-porous media system"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1901.02925","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":"sha256:68f9c9d1edfab92896a4c37b0868e78abcfa5d4b464b03dce9dc4501ef6ad5d2","target":"record","created_at":"2026-05-17T23:41:24Z","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":"5293efb6f78ef3f588a95e48e98e236d0e3025a041902db402a6b762cd4763ee","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2019-01-09T20:38:05Z","title_canon_sha256":"36de93c0c2990de871bb624d26cd9d49bc8a1ae3c2290842bc62f53a9c7c4eab"},"schema_version":"1.0","source":{"id":"1901.02925","kind":"arxiv","version":2}},"canonical_sha256":"42df8c555e05a8c58d080dfd0ee584b304eefac6a1477a67d2f518bd64eea55e","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"42df8c555e05a8c58d080dfd0ee584b304eefac6a1477a67d2f518bd64eea55e","first_computed_at":"2026-05-17T23:41:24.699423Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:41:24.699423Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"UQYpA5LFAFaLUST39Fb/qGa7rgMsjpWOEZvJjtb0fBSTLplwWFuXC1HVxY7+16ljxqNeZuBNXENe/Eq5OTZZBw==","signature_status":"signed_v1","signed_at":"2026-05-17T23:41:24.700058Z","signed_message":"canonical_sha256_bytes"},"source_id":"1901.02925","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:68f9c9d1edfab92896a4c37b0868e78abcfa5d4b464b03dce9dc4501ef6ad5d2","sha256:957feb181949f2d1e5927908facbeb4c74caba2388abc40424c1902b75100892"],"state_sha256":"6585a850f9fd331e689fdae4fc5196cec650aea3239075694885f842815846fa"}