{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:ZYKUJVAJPR4CWJ7IIJMN7VDDCW","short_pith_number":"pith:ZYKUJVAJ","canonical_record":{"source":{"id":"1403.4112","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2014-03-17T14:40:30Z","cross_cats_sorted":[],"title_canon_sha256":"a139d08a0eb1b4d6890c70b6d2d8bc88a2b51977cf36788452f562cc1c5052b6","abstract_canon_sha256":"63bd46a3b83a6d3f98e18f485282e80d0f1030ca7c51262b9fb163543186966e"},"schema_version":"1.0"},"canonical_sha256":"ce1544d4097c782b27e84258dfd46315827c650ec7465530ed7e3e59c901d91b","source":{"kind":"arxiv","id":"1403.4112","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.4112","created_at":"2026-05-18T01:20:02Z"},{"alias_kind":"arxiv_version","alias_value":"1403.4112v1","created_at":"2026-05-18T01:20:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.4112","created_at":"2026-05-18T01:20:02Z"},{"alias_kind":"pith_short_12","alias_value":"ZYKUJVAJPR4C","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZYKUJVAJPR4CWJ7I","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZYKUJVAJ","created_at":"2026-05-18T12:28:59Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:ZYKUJVAJPR4CWJ7IIJMN7VDDCW","target":"record","payload":{"canonical_record":{"source":{"id":"1403.4112","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2014-03-17T14:40:30Z","cross_cats_sorted":[],"title_canon_sha256":"a139d08a0eb1b4d6890c70b6d2d8bc88a2b51977cf36788452f562cc1c5052b6","abstract_canon_sha256":"63bd46a3b83a6d3f98e18f485282e80d0f1030ca7c51262b9fb163543186966e"},"schema_version":"1.0"},"canonical_sha256":"ce1544d4097c782b27e84258dfd46315827c650ec7465530ed7e3e59c901d91b","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:20:02.091580Z","signature_b64":"IVF8VWGUS0tEf0ZG6e1KJQKeuXoHmofREy0sMRUnXvRoPptCi+OFxcnLhGPACqnDy0JYEfJYYIlgg0OfbFrZAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"ce1544d4097c782b27e84258dfd46315827c650ec7465530ed7e3e59c901d91b","last_reissued_at":"2026-05-18T01:20:02.090864Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:20:02.090864Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1403.4112","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":"2026-05-18T01:20:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"K8y6kwpU4g3tVjyxWUvy9CSoX397imFD1kMgEh6PGLZEEZONDHIiQ7Bwca7XgjVdlirMLMaSp27MXxDup+LOAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T19:13:19.745204Z"},"content_sha256":"6fda05bac6b8e11f1cf69698b4ba2b5d3ef5777ae898a09012299f1626b35cf3","schema_version":"1.0","event_id":"sha256:6fda05bac6b8e11f1cf69698b4ba2b5d3ef5777ae898a09012299f1626b35cf3"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:ZYKUJVAJPR4CWJ7IIJMN7VDDCW","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Well-balanced high order schemes on non-uniform grids and entropy residuals","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"math.NA","authors_text":"Gabriella Puppo, Matteo Semplice","submitted_at":"2014-03-17T14:40:30Z","abstract_excerpt":"This paper is concerned with the construction of high order schemes on irregular grids for balance laws, including a discussion of an a-posteriori error indicator based on the numerical entropy production. We also impose well-balancing on non uniform grids for the shallow water equations, which can be extended similarly to other cases, obtaining schemes up to fourth order of accuracy with very weak assumptions on the regularity of the grid. Our results show the expected convergence rates, the correct propagation of shocks across grid discontinuities and demonstrate the improved resolution achi"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.4112","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":""},"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":"2026-05-18T01:20:02Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lnU2T50m51+ElrBICBEYGrgOq8yYPJREU4hMDK41QGK3VItZZodmL7cUJANkPuOegGyIj/MEz+J9YwQFNQNJBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-08T19:13:19.746034Z"},"content_sha256":"4c564d639d465b7824a262da54e8cf9555e17c56553d7c41e362c28dfcb790ba","schema_version":"1.0","event_id":"sha256:4c564d639d465b7824a262da54e8cf9555e17c56553d7c41e362c28dfcb790ba"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ZYKUJVAJPR4CWJ7IIJMN7VDDCW/bundle.json","state_url":"https://pith.science/pith/ZYKUJVAJPR4CWJ7IIJMN7VDDCW/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ZYKUJVAJPR4CWJ7IIJMN7VDDCW/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":"2026-06-08T19:13:19Z","links":{"resolver":"https://pith.science/pith/ZYKUJVAJPR4CWJ7IIJMN7VDDCW","bundle":"https://pith.science/pith/ZYKUJVAJPR4CWJ7IIJMN7VDDCW/bundle.json","state":"https://pith.science/pith/ZYKUJVAJPR4CWJ7IIJMN7VDDCW/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ZYKUJVAJPR4CWJ7IIJMN7VDDCW/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:ZYKUJVAJPR4CWJ7IIJMN7VDDCW","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":"63bd46a3b83a6d3f98e18f485282e80d0f1030ca7c51262b9fb163543186966e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2014-03-17T14:40:30Z","title_canon_sha256":"a139d08a0eb1b4d6890c70b6d2d8bc88a2b51977cf36788452f562cc1c5052b6"},"schema_version":"1.0","source":{"id":"1403.4112","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1403.4112","created_at":"2026-05-18T01:20:02Z"},{"alias_kind":"arxiv_version","alias_value":"1403.4112v1","created_at":"2026-05-18T01:20:02Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1403.4112","created_at":"2026-05-18T01:20:02Z"},{"alias_kind":"pith_short_12","alias_value":"ZYKUJVAJPR4C","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_16","alias_value":"ZYKUJVAJPR4CWJ7I","created_at":"2026-05-18T12:28:59Z"},{"alias_kind":"pith_short_8","alias_value":"ZYKUJVAJ","created_at":"2026-05-18T12:28:59Z"}],"graph_snapshots":[{"event_id":"sha256:4c564d639d465b7824a262da54e8cf9555e17c56553d7c41e362c28dfcb790ba","target":"graph","created_at":"2026-05-18T01:20:02Z","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":"This paper is concerned with the construction of high order schemes on irregular grids for balance laws, including a discussion of an a-posteriori error indicator based on the numerical entropy production. We also impose well-balancing on non uniform grids for the shallow water equations, which can be extended similarly to other cases, obtaining schemes up to fourth order of accuracy with very weak assumptions on the regularity of the grid. Our results show the expected convergence rates, the correct propagation of shocks across grid discontinuities and demonstrate the improved resolution achi","authors_text":"Gabriella Puppo, Matteo Semplice","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2014-03-17T14:40:30Z","title":"Well-balanced high order schemes on non-uniform grids and entropy residuals"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.4112","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":"sha256:6fda05bac6b8e11f1cf69698b4ba2b5d3ef5777ae898a09012299f1626b35cf3","target":"record","created_at":"2026-05-18T01:20:02Z","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":"63bd46a3b83a6d3f98e18f485282e80d0f1030ca7c51262b9fb163543186966e","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"math.NA","submitted_at":"2014-03-17T14:40:30Z","title_canon_sha256":"a139d08a0eb1b4d6890c70b6d2d8bc88a2b51977cf36788452f562cc1c5052b6"},"schema_version":"1.0","source":{"id":"1403.4112","kind":"arxiv","version":1}},"canonical_sha256":"ce1544d4097c782b27e84258dfd46315827c650ec7465530ed7e3e59c901d91b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"ce1544d4097c782b27e84258dfd46315827c650ec7465530ed7e3e59c901d91b","first_computed_at":"2026-05-18T01:20:02.090864Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:20:02.090864Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"IVF8VWGUS0tEf0ZG6e1KJQKeuXoHmofREy0sMRUnXvRoPptCi+OFxcnLhGPACqnDy0JYEfJYYIlgg0OfbFrZAw==","signature_status":"signed_v1","signed_at":"2026-05-18T01:20:02.091580Z","signed_message":"canonical_sha256_bytes"},"source_id":"1403.4112","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6fda05bac6b8e11f1cf69698b4ba2b5d3ef5777ae898a09012299f1626b35cf3","sha256:4c564d639d465b7824a262da54e8cf9555e17c56553d7c41e362c28dfcb790ba"],"state_sha256":"1364cefa8095779ac477076c0fecb933897f1ac776b7b289ad28e1bf15ab6021"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Lit+RYXelNO9dxsW/YcR/xPxZVzBbeTQxsIzDIeOOeCkfYwivbg4ipvVAsgoziT2j944MhhavSmAprjMKxCvCQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-08T19:13:19.751171Z","bundle_sha256":"d1a475fe3fe16cbb14f4604199b54f765d9b771ca1695f788cc908cd72020426"}}