{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:427MOZSPVIH7CC6DEXWBY7KHMW","short_pith_number":"pith:427MOZSP","canonical_record":{"source":{"id":"nlin/0202062","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nlin.CD","submitted_at":"2002-02-27T13:47:57Z","cross_cats_sorted":["cs.NA","math.NA","physics.flu-dyn"],"title_canon_sha256":"13be81f8ec0ba51aad9957303d00be30864504e8ac55b182d9b903b5263f9e1e","abstract_canon_sha256":"a68703c1507091a354cb1d663899344e3060ae6ca1ac1443d0eb84d31bc67b58"},"schema_version":"1.0"},"canonical_sha256":"e6bec7664faa0ff10bc325ec1c7d47659871d58128de4945033be016a0c3fe85","source":{"kind":"arxiv","id":"nlin/0202062","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nlin/0202062","created_at":"2026-06-03T22:06:22Z"},{"alias_kind":"arxiv_version","alias_value":"nlin/0202062v1","created_at":"2026-06-03T22:06:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nlin/0202062","created_at":"2026-06-03T22:06:22Z"},{"alias_kind":"pith_short_12","alias_value":"427MOZSPVIH7","created_at":"2026-06-03T22:06:22Z"},{"alias_kind":"pith_short_16","alias_value":"427MOZSPVIH7CC6D","created_at":"2026-06-03T22:06:22Z"},{"alias_kind":"pith_short_8","alias_value":"427MOZSP","created_at":"2026-06-03T22:06:22Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:427MOZSPVIH7CC6DEXWBY7KHMW","target":"record","payload":{"canonical_record":{"source":{"id":"nlin/0202062","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nlin.CD","submitted_at":"2002-02-27T13:47:57Z","cross_cats_sorted":["cs.NA","math.NA","physics.flu-dyn"],"title_canon_sha256":"13be81f8ec0ba51aad9957303d00be30864504e8ac55b182d9b903b5263f9e1e","abstract_canon_sha256":"a68703c1507091a354cb1d663899344e3060ae6ca1ac1443d0eb84d31bc67b58"},"schema_version":"1.0"},"canonical_sha256":"e6bec7664faa0ff10bc325ec1c7d47659871d58128de4945033be016a0c3fe85","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-03T22:06:22.495647Z","signature_b64":"C8sNlcIPUF3DSQmtIhwWl2cE0m1J++qakI97CW1EQ9nPxVlhlBIvrzRQ5A9wF/ozAY1UTN+US6cOFuxJcT2nDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e6bec7664faa0ff10bc325ec1c7d47659871d58128de4945033be016a0c3fe85","last_reissued_at":"2026-06-03T22:06:22.495241Z","signature_status":"signed_v1","first_computed_at":"2026-06-03T22:06:22.495241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"nlin/0202062","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":"2026-06-03T22:06:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"568pbZ7UX3K5Lonj+QtkQUsUG7JkPxn7tlQS1pX46VC4IANVZlC0h1ys1Hu3AIkU0PUegcNTY6TuZ9cemFEDAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T05:46:27.674872Z"},"content_sha256":"af50ed089bfc9c8f67af0b21687491d9d62fad3a383661c126bd367d7934f2c6","schema_version":"1.0","event_id":"sha256:af50ed089bfc9c8f67af0b21687491d9d62fad3a383661c126bd367d7934f2c6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:427MOZSPVIH7CC6DEXWBY7KHMW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Leray simulation of turbulent shear layers","license":"","headline":"","cross_cats":["cs.NA","math.NA","physics.flu-dyn"],"primary_cat":"nlin.CD","authors_text":"Bernard J. Geurts, Darryl D. Holm","submitted_at":"2002-02-27T13:47:57Z","abstract_excerpt":"We consider so-called Leray regularization of the convective contributions. This gives rise to a subgrid parameterization which involves both explicit filtering and (approximate) inversion. The Leray model also arises from the alpha-modeling strategy derived via Kelvin's circulation theorem. We study the dynamics associated with the Leray model in a turbulent mixing layer and compare predictions with filtered DNS results and findings due to dynamic (mixed) models. In particular, the kinetic energy, momentum thickness and energy-spectra are analyzed, establishing favorable performance of the Le"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nlin/0202062","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/nlin/0202062/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":"2026-06-03T22:06:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ks4o7bz606weyflHME29Cq8r/h5GpEuFbthrIhyXX47D082J7JUS+lXwHVZeslmtvDZ+bYSj9f3zyPAMdNbrBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-05T05:46:27.675612Z"},"content_sha256":"b29cf9826cbe4f8b68b2eba7b6e65e208d3f32dd64d5ba9437d7220f7d6199d5","schema_version":"1.0","event_id":"sha256:b29cf9826cbe4f8b68b2eba7b6e65e208d3f32dd64d5ba9437d7220f7d6199d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/427MOZSPVIH7CC6DEXWBY7KHMW/bundle.json","state_url":"https://pith.science/pith/427MOZSPVIH7CC6DEXWBY7KHMW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/427MOZSPVIH7CC6DEXWBY7KHMW/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":"2026-06-05T05:46:27Z","links":{"resolver":"https://pith.science/pith/427MOZSPVIH7CC6DEXWBY7KHMW","bundle":"https://pith.science/pith/427MOZSPVIH7CC6DEXWBY7KHMW/bundle.json","state":"https://pith.science/pith/427MOZSPVIH7CC6DEXWBY7KHMW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/427MOZSPVIH7CC6DEXWBY7KHMW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:427MOZSPVIH7CC6DEXWBY7KHMW","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":"a68703c1507091a354cb1d663899344e3060ae6ca1ac1443d0eb84d31bc67b58","cross_cats_sorted":["cs.NA","math.NA","physics.flu-dyn"],"license":"","primary_cat":"nlin.CD","submitted_at":"2002-02-27T13:47:57Z","title_canon_sha256":"13be81f8ec0ba51aad9957303d00be30864504e8ac55b182d9b903b5263f9e1e"},"schema_version":"1.0","source":{"id":"nlin/0202062","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nlin/0202062","created_at":"2026-06-03T22:06:22Z"},{"alias_kind":"arxiv_version","alias_value":"nlin/0202062v1","created_at":"2026-06-03T22:06:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nlin/0202062","created_at":"2026-06-03T22:06:22Z"},{"alias_kind":"pith_short_12","alias_value":"427MOZSPVIH7","created_at":"2026-06-03T22:06:22Z"},{"alias_kind":"pith_short_16","alias_value":"427MOZSPVIH7CC6D","created_at":"2026-06-03T22:06:22Z"},{"alias_kind":"pith_short_8","alias_value":"427MOZSP","created_at":"2026-06-03T22:06:22Z"}],"graph_snapshots":[{"event_id":"sha256:b29cf9826cbe4f8b68b2eba7b6e65e208d3f32dd64d5ba9437d7220f7d6199d5","target":"graph","created_at":"2026-06-03T22:06:22Z","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/nlin/0202062/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We consider so-called Leray regularization of the convective contributions. This gives rise to a subgrid parameterization which involves both explicit filtering and (approximate) inversion. The Leray model also arises from the alpha-modeling strategy derived via Kelvin's circulation theorem. We study the dynamics associated with the Leray model in a turbulent mixing layer and compare predictions with filtered DNS results and findings due to dynamic (mixed) models. In particular, the kinetic energy, momentum thickness and energy-spectra are analyzed, establishing favorable performance of the Le","authors_text":"Bernard J. Geurts, Darryl D. Holm","cross_cats":["cs.NA","math.NA","physics.flu-dyn"],"headline":"","license":"","primary_cat":"nlin.CD","submitted_at":"2002-02-27T13:47:57Z","title":"Leray simulation of turbulent shear layers"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nlin/0202062","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:af50ed089bfc9c8f67af0b21687491d9d62fad3a383661c126bd367d7934f2c6","target":"record","created_at":"2026-06-03T22:06:22Z","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":"a68703c1507091a354cb1d663899344e3060ae6ca1ac1443d0eb84d31bc67b58","cross_cats_sorted":["cs.NA","math.NA","physics.flu-dyn"],"license":"","primary_cat":"nlin.CD","submitted_at":"2002-02-27T13:47:57Z","title_canon_sha256":"13be81f8ec0ba51aad9957303d00be30864504e8ac55b182d9b903b5263f9e1e"},"schema_version":"1.0","source":{"id":"nlin/0202062","kind":"arxiv","version":1}},"canonical_sha256":"e6bec7664faa0ff10bc325ec1c7d47659871d58128de4945033be016a0c3fe85","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"e6bec7664faa0ff10bc325ec1c7d47659871d58128de4945033be016a0c3fe85","first_computed_at":"2026-06-03T22:06:22.495241Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-03T22:06:22.495241Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"C8sNlcIPUF3DSQmtIhwWl2cE0m1J++qakI97CW1EQ9nPxVlhlBIvrzRQ5A9wF/ozAY1UTN+US6cOFuxJcT2nDA==","signature_status":"signed_v1","signed_at":"2026-06-03T22:06:22.495647Z","signed_message":"canonical_sha256_bytes"},"source_id":"nlin/0202062","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:af50ed089bfc9c8f67af0b21687491d9d62fad3a383661c126bd367d7934f2c6","sha256:b29cf9826cbe4f8b68b2eba7b6e65e208d3f32dd64d5ba9437d7220f7d6199d5"],"state_sha256":"800220ee52a9b9e871f3f3a5dd51456fd5f9c5b0f33c47a1326768eda0d9637f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Jr2rI4vU6+vGX6PAdsB9dLFTvs7ZHBz6t667ZHSWoLcHbaEQrf+B5G9barzkNjH6C/ncAMrUUUJLKlO6ttxOCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-05T05:46:27.679106Z","bundle_sha256":"f2abb1f0989f1080e5abeecef242b0c9e9d718fb3055cc2e6f8ac9291e61e96b"}}