{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2026:MV7BRPK3UB6W5IPZPQJ2LNXDGV","short_pith_number":"pith:MV7BRPK3","canonical_record":{"source":{"id":"2606.17759","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.NA","submitted_at":"2026-06-16T10:24:16Z","cross_cats_sorted":["cs.NA"],"title_canon_sha256":"27824f05651431e54a53c4f3c1136c78d3ecffb1dc26aed6750b888f7d5fd2de","abstract_canon_sha256":"ee65da7dfec54a23135d3bf439ced36aa2b657a75b0e38b579156acb15891cc7"},"schema_version":"1.0"},"canonical_sha256":"657e18bd5ba07d6ea1f97c13a5b6e335583ec04a36eb510dc03f8a9dc69c6577","source":{"kind":"arxiv","id":"2606.17759","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.17759","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"arxiv_version","alias_value":"2606.17759v1","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.17759","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"pith_short_12","alias_value":"MV7BRPK3UB6W","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"pith_short_16","alias_value":"MV7BRPK3UB6W5IPZ","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"pith_short_8","alias_value":"MV7BRPK3","created_at":"2026-06-19T16:10:21Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2026:MV7BRPK3UB6W5IPZPQJ2LNXDGV","target":"record","payload":{"canonical_record":{"source":{"id":"2606.17759","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.NA","submitted_at":"2026-06-16T10:24:16Z","cross_cats_sorted":["cs.NA"],"title_canon_sha256":"27824f05651431e54a53c4f3c1136c78d3ecffb1dc26aed6750b888f7d5fd2de","abstract_canon_sha256":"ee65da7dfec54a23135d3bf439ced36aa2b657a75b0e38b579156acb15891cc7"},"schema_version":"1.0"},"canonical_sha256":"657e18bd5ba07d6ea1f97c13a5b6e335583ec04a36eb510dc03f8a9dc69c6577","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-06-19T16:10:21.118124Z","signature_b64":"T3ms1eE0UGOb5nUL4DBVgttf6+PiCZBv58ekF+85euVbL9BjlVAyQDm27O5VrK4EUD21t5WpQz2UhQvGIMwbAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"657e18bd5ba07d6ea1f97c13a5b6e335583ec04a36eb510dc03f8a9dc69c6577","last_reissued_at":"2026-06-19T16:10:21.117793Z","signature_status":"signed_v1","first_computed_at":"2026-06-19T16:10:21.117793Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2606.17759","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":"2026-06-19T16:10:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"YLkPhf9iE3QI/PB/V+/hYvv64M43hruULDPE4ky5GSHarpPxRuPFwrRRsmj1vn75JQN0V4mL+91U13eu+KCGDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T08:42:41.205039Z"},"content_sha256":"92fef4bc049e4c56833ea9c9e49e0a308a3bc1c06c468c6e2d0ad10e60d4485d","schema_version":"1.0","event_id":"sha256:92fef4bc049e4c56833ea9c9e49e0a308a3bc1c06c468c6e2d0ad10e60d4485d"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2026:MV7BRPK3UB6W5IPZPQJ2LNXDGV","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Time integration as filtering: a space-time discretization-aware LES formulation","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["cs.NA"],"primary_cat":"math.NA","authors_text":"Syver D{\\o}ving Agdestein","submitted_at":"2026-06-16T10:24:16Z","abstract_excerpt":"Discretization-aware LES yields an exact expression for the discrete target flux in finite-volume LES by recognizing that a coarse finite difference is a top-hat-filtered exact derivative (the \"filter-swap\" property). That argument is purely spatial; here we observe that the forward-Euler time difference is itself a (one-sided) top-hat-filtered exact time derivative, and repeat the construction in space-time. The resulting exact discrete flux decomposition extends the spatial one with a single temporal term: a flux-quadrature error that shrinks with the quadrature order of the time integrator."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.17759","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/2606.17759/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":"2026-06-19T16:10:21Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"+TfhWN52CTIqBOTaqxZmkQp+M1QzHlL7l1Z1aB2UgglCmWCu5isGGXEMafINyzYXWPx8BEUgGcfopvWI2OGqCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T08:42:41.205433Z"},"content_sha256":"44d9b4a68293a9939ad6dfef623a3a69fdf81d67571952520d30b10ca5562244","schema_version":"1.0","event_id":"sha256:44d9b4a68293a9939ad6dfef623a3a69fdf81d67571952520d30b10ca5562244"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MV7BRPK3UB6W5IPZPQJ2LNXDGV/bundle.json","state_url":"https://pith.science/pith/MV7BRPK3UB6W5IPZPQJ2LNXDGV/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MV7BRPK3UB6W5IPZPQJ2LNXDGV/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":"2026-06-23T08:42:41Z","links":{"resolver":"https://pith.science/pith/MV7BRPK3UB6W5IPZPQJ2LNXDGV","bundle":"https://pith.science/pith/MV7BRPK3UB6W5IPZPQJ2LNXDGV/bundle.json","state":"https://pith.science/pith/MV7BRPK3UB6W5IPZPQJ2LNXDGV/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MV7BRPK3UB6W5IPZPQJ2LNXDGV/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2026:MV7BRPK3UB6W5IPZPQJ2LNXDGV","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":"ee65da7dfec54a23135d3bf439ced36aa2b657a75b0e38b579156acb15891cc7","cross_cats_sorted":["cs.NA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.NA","submitted_at":"2026-06-16T10:24:16Z","title_canon_sha256":"27824f05651431e54a53c4f3c1136c78d3ecffb1dc26aed6750b888f7d5fd2de"},"schema_version":"1.0","source":{"id":"2606.17759","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2606.17759","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"arxiv_version","alias_value":"2606.17759v1","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2606.17759","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"pith_short_12","alias_value":"MV7BRPK3UB6W","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"pith_short_16","alias_value":"MV7BRPK3UB6W5IPZ","created_at":"2026-06-19T16:10:21Z"},{"alias_kind":"pith_short_8","alias_value":"MV7BRPK3","created_at":"2026-06-19T16:10:21Z"}],"graph_snapshots":[{"event_id":"sha256:44d9b4a68293a9939ad6dfef623a3a69fdf81d67571952520d30b10ca5562244","target":"graph","created_at":"2026-06-19T16:10:21Z","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/2606.17759/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Discretization-aware LES yields an exact expression for the discrete target flux in finite-volume LES by recognizing that a coarse finite difference is a top-hat-filtered exact derivative (the \"filter-swap\" property). That argument is purely spatial; here we observe that the forward-Euler time difference is itself a (one-sided) top-hat-filtered exact time derivative, and repeat the construction in space-time. The resulting exact discrete flux decomposition extends the spatial one with a single temporal term: a flux-quadrature error that shrinks with the quadrature order of the time integrator.","authors_text":"Syver D{\\o}ving Agdestein","cross_cats":["cs.NA"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.NA","submitted_at":"2026-06-16T10:24:16Z","title":"Time integration as filtering: a space-time discretization-aware LES formulation"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2606.17759","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":"sha256:92fef4bc049e4c56833ea9c9e49e0a308a3bc1c06c468c6e2d0ad10e60d4485d","target":"record","created_at":"2026-06-19T16:10:21Z","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":"ee65da7dfec54a23135d3bf439ced36aa2b657a75b0e38b579156acb15891cc7","cross_cats_sorted":["cs.NA"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"math.NA","submitted_at":"2026-06-16T10:24:16Z","title_canon_sha256":"27824f05651431e54a53c4f3c1136c78d3ecffb1dc26aed6750b888f7d5fd2de"},"schema_version":"1.0","source":{"id":"2606.17759","kind":"arxiv","version":1}},"canonical_sha256":"657e18bd5ba07d6ea1f97c13a5b6e335583ec04a36eb510dc03f8a9dc69c6577","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"657e18bd5ba07d6ea1f97c13a5b6e335583ec04a36eb510dc03f8a9dc69c6577","first_computed_at":"2026-06-19T16:10:21.117793Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-06-19T16:10:21.117793Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"T3ms1eE0UGOb5nUL4DBVgttf6+PiCZBv58ekF+85euVbL9BjlVAyQDm27O5VrK4EUD21t5WpQz2UhQvGIMwbAg==","signature_status":"signed_v1","signed_at":"2026-06-19T16:10:21.118124Z","signed_message":"canonical_sha256_bytes"},"source_id":"2606.17759","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:92fef4bc049e4c56833ea9c9e49e0a308a3bc1c06c468c6e2d0ad10e60d4485d","sha256:44d9b4a68293a9939ad6dfef623a3a69fdf81d67571952520d30b10ca5562244"],"state_sha256":"9658fb985fbf656208f43278f9b7b5e35a3b1752d78714681388dc13325f376f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oTaIZZ/glKyHWQgPIIpD4YQYE49Og9K9pViLDgrNA7sfMwiaAO8BliZ9usHjznXLK9hX0cw0FOk/roB10SzCBg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T08:42:41.207595Z","bundle_sha256":"8def9a76b7b0c7935c6345e66335540442e37ab45ddbe90bb24ec958340851f9"}}