{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:G4HENY4K4HOA2STNFPAVWHQGVU","short_pith_number":"pith:G4HENY4K","canonical_record":{"source":{"id":"1609.01781","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2016-09-06T22:41:02Z","cross_cats_sorted":["astro-ph.EP","astro-ph.SR","nlin.CD"],"title_canon_sha256":"e044664e410dcf34c190ef5ba58421cf04e65a0a027b51c4924f0a003b3d689b","abstract_canon_sha256":"2cf1f863a6691927d9f703de037b6e1c3508c8a383af67e35a63b9217d2b4b71"},"schema_version":"1.0"},"canonical_sha256":"370e46e38ae1dc0d4a6d2bc15b1e06ad22d47de36d2c40d9651e9530584921eb","source":{"kind":"arxiv","id":"1609.01781","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.01781","created_at":"2026-05-18T00:49:46Z"},{"alias_kind":"arxiv_version","alias_value":"1609.01781v2","created_at":"2026-05-18T00:49:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.01781","created_at":"2026-05-18T00:49:46Z"},{"alias_kind":"pith_short_12","alias_value":"G4HENY4K4HOA","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"G4HENY4K4HOA2STN","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"G4HENY4K","created_at":"2026-05-18T12:30:15Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:G4HENY4K4HOA2STNFPAVWHQGVU","target":"record","payload":{"canonical_record":{"source":{"id":"1609.01781","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2016-09-06T22:41:02Z","cross_cats_sorted":["astro-ph.EP","astro-ph.SR","nlin.CD"],"title_canon_sha256":"e044664e410dcf34c190ef5ba58421cf04e65a0a027b51c4924f0a003b3d689b","abstract_canon_sha256":"2cf1f863a6691927d9f703de037b6e1c3508c8a383af67e35a63b9217d2b4b71"},"schema_version":"1.0"},"canonical_sha256":"370e46e38ae1dc0d4a6d2bc15b1e06ad22d47de36d2c40d9651e9530584921eb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:49:46.846918Z","signature_b64":"0p3AjGo474gcJMe88yVo8pUTKRcwpwgxj7nZIeWVi12jeXQ5zOqnpDKAjlMygnJfsD8QbJULreUVAeQf+SJRDQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"370e46e38ae1dc0d4a6d2bc15b1e06ad22d47de36d2c40d9651e9530584921eb","last_reissued_at":"2026-05-18T00:49:46.846368Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:49:46.846368Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1609.01781","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":"2026-05-18T00:49:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"wYH6uuLuu4bAvsBx8YkzcJTx4JPDzr5y52un9poM0x6WmSZm/kbeQ0uQgK2g4BanqRJ+8TWf1QhhCEnlXBl4CA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T02:23:13.775718Z"},"content_sha256":"ce4937a8c75c1f14e4b8d793f080d3ee268c565f47ead46fac3e3ae0b3b6af96","schema_version":"1.0","event_id":"sha256:ce4937a8c75c1f14e4b8d793f080d3ee268c565f47ead46fac3e3ae0b3b6af96"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:G4HENY4K4HOA2STNFPAVWHQGVU","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Effects of magnetic and kinetic helicities on the growth of magnetic fields in laminar and turbulent flows by helical-Fourier decomposition","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.EP","astro-ph.SR","nlin.CD"],"primary_cat":"physics.flu-dyn","authors_text":"Arjun Berera, Ganapati Sahoo, Luca Biferale, Mairi McKay, Moritz Linkmann","submitted_at":"2016-09-06T22:41:02Z","abstract_excerpt":"We present a numerical and analytical study of incompressible homogeneous conducting fluids using a helical Fourier representation. We analytically study both small- and large-scale dynamo properties, as well as the inverse cascade of magnetic helicity, in the most general minimal subset of interacting velocity and magnetic fields on a closed Fourier triad. We mainly focus on the dependency of magnetic field growth as a function of the distribution of kinetic and magnetic helicities among the three interacting wavenumbers. By combining direct numerical simulations of the full magnetohydrodynam"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.01781","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":"2026-05-18T00:49:46Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"kySB+LKQKj+JDQYs0mJfVwkXsA9H0wf8gYLOIVTsMj+/BaPvnFSXsKucON3kICuiefgqGCx/t7sRdhFyiTEbDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-26T02:23:13.776435Z"},"content_sha256":"ecdb2e39f7169f9a98870be4f88fc56bff8bf4acdb63644f8a4c7f0dd6530ab2","schema_version":"1.0","event_id":"sha256:ecdb2e39f7169f9a98870be4f88fc56bff8bf4acdb63644f8a4c7f0dd6530ab2"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/G4HENY4K4HOA2STNFPAVWHQGVU/bundle.json","state_url":"https://pith.science/pith/G4HENY4K4HOA2STNFPAVWHQGVU/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/G4HENY4K4HOA2STNFPAVWHQGVU/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":"2026-05-26T02:23:13Z","links":{"resolver":"https://pith.science/pith/G4HENY4K4HOA2STNFPAVWHQGVU","bundle":"https://pith.science/pith/G4HENY4K4HOA2STNFPAVWHQGVU/bundle.json","state":"https://pith.science/pith/G4HENY4K4HOA2STNFPAVWHQGVU/state.json","well_known_bundle":"https://pith.science/.well-known/pith/G4HENY4K4HOA2STNFPAVWHQGVU/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:G4HENY4K4HOA2STNFPAVWHQGVU","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":"2cf1f863a6691927d9f703de037b6e1c3508c8a383af67e35a63b9217d2b4b71","cross_cats_sorted":["astro-ph.EP","astro-ph.SR","nlin.CD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2016-09-06T22:41:02Z","title_canon_sha256":"e044664e410dcf34c190ef5ba58421cf04e65a0a027b51c4924f0a003b3d689b"},"schema_version":"1.0","source":{"id":"1609.01781","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1609.01781","created_at":"2026-05-18T00:49:46Z"},{"alias_kind":"arxiv_version","alias_value":"1609.01781v2","created_at":"2026-05-18T00:49:46Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1609.01781","created_at":"2026-05-18T00:49:46Z"},{"alias_kind":"pith_short_12","alias_value":"G4HENY4K4HOA","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_16","alias_value":"G4HENY4K4HOA2STN","created_at":"2026-05-18T12:30:15Z"},{"alias_kind":"pith_short_8","alias_value":"G4HENY4K","created_at":"2026-05-18T12:30:15Z"}],"graph_snapshots":[{"event_id":"sha256:ecdb2e39f7169f9a98870be4f88fc56bff8bf4acdb63644f8a4c7f0dd6530ab2","target":"graph","created_at":"2026-05-18T00:49:46Z","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 present a numerical and analytical study of incompressible homogeneous conducting fluids using a helical Fourier representation. We analytically study both small- and large-scale dynamo properties, as well as the inverse cascade of magnetic helicity, in the most general minimal subset of interacting velocity and magnetic fields on a closed Fourier triad. We mainly focus on the dependency of magnetic field growth as a function of the distribution of kinetic and magnetic helicities among the three interacting wavenumbers. By combining direct numerical simulations of the full magnetohydrodynam","authors_text":"Arjun Berera, Ganapati Sahoo, Luca Biferale, Mairi McKay, Moritz Linkmann","cross_cats":["astro-ph.EP","astro-ph.SR","nlin.CD"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2016-09-06T22:41:02Z","title":"Effects of magnetic and kinetic helicities on the growth of magnetic fields in laminar and turbulent flows by helical-Fourier decomposition"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1609.01781","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:ce4937a8c75c1f14e4b8d793f080d3ee268c565f47ead46fac3e3ae0b3b6af96","target":"record","created_at":"2026-05-18T00:49:46Z","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":"2cf1f863a6691927d9f703de037b6e1c3508c8a383af67e35a63b9217d2b4b71","cross_cats_sorted":["astro-ph.EP","astro-ph.SR","nlin.CD"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.flu-dyn","submitted_at":"2016-09-06T22:41:02Z","title_canon_sha256":"e044664e410dcf34c190ef5ba58421cf04e65a0a027b51c4924f0a003b3d689b"},"schema_version":"1.0","source":{"id":"1609.01781","kind":"arxiv","version":2}},"canonical_sha256":"370e46e38ae1dc0d4a6d2bc15b1e06ad22d47de36d2c40d9651e9530584921eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"370e46e38ae1dc0d4a6d2bc15b1e06ad22d47de36d2c40d9651e9530584921eb","first_computed_at":"2026-05-18T00:49:46.846368Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:49:46.846368Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0p3AjGo474gcJMe88yVo8pUTKRcwpwgxj7nZIeWVi12jeXQ5zOqnpDKAjlMygnJfsD8QbJULreUVAeQf+SJRDQ==","signature_status":"signed_v1","signed_at":"2026-05-18T00:49:46.846918Z","signed_message":"canonical_sha256_bytes"},"source_id":"1609.01781","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ce4937a8c75c1f14e4b8d793f080d3ee268c565f47ead46fac3e3ae0b3b6af96","sha256:ecdb2e39f7169f9a98870be4f88fc56bff8bf4acdb63644f8a4c7f0dd6530ab2"],"state_sha256":"c77be271facfe27700dc3999285066dcb0de4669e3b675a4412e96f95775161d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"9DMS9CSCXneHJiz8jCOc+JbW2uiN+9vv9lBUxSQnZXaMJAnuBMH2pYVvFePEblWxc/k2TAow7P8HMUvYtx79CQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-26T02:23:13.780227Z","bundle_sha256":"94928f0510e003be047880643d9fa6c2a289aca6f47538ec46f47bbe01916c1e"}}