{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:OWYWTT7UM722NMZ2SDGQCJNFFK","short_pith_number":"pith:OWYWTT7U","canonical_record":{"source":{"id":"2302.00575","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-02-01T16:48:42Z","cross_cats_sorted":[],"title_canon_sha256":"23510b8bd7c5d01f84f9ed3b693d05f4c17167debab89c1b26a7a103c695d749","abstract_canon_sha256":"25d9a2cd7691ca376b8225eb837e2090ce47dfe0b1bdb8442e4c8f5628ecb7bf"},"schema_version":"1.0"},"canonical_sha256":"75b169cff467f5a6b33a90cd0125a52a9c1300c2b5caf3926a3058966893dfe5","source":{"kind":"arxiv","id":"2302.00575","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.00575","created_at":"2026-07-05T06:15:23Z"},{"alias_kind":"arxiv_version","alias_value":"2302.00575v1","created_at":"2026-07-05T06:15:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.00575","created_at":"2026-07-05T06:15:23Z"},{"alias_kind":"pith_short_12","alias_value":"OWYWTT7UM722","created_at":"2026-07-05T06:15:23Z"},{"alias_kind":"pith_short_16","alias_value":"OWYWTT7UM722NMZ2","created_at":"2026-07-05T06:15:23Z"},{"alias_kind":"pith_short_8","alias_value":"OWYWTT7U","created_at":"2026-07-05T06:15:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:OWYWTT7UM722NMZ2SDGQCJNFFK","target":"record","payload":{"canonical_record":{"source":{"id":"2302.00575","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-02-01T16:48:42Z","cross_cats_sorted":[],"title_canon_sha256":"23510b8bd7c5d01f84f9ed3b693d05f4c17167debab89c1b26a7a103c695d749","abstract_canon_sha256":"25d9a2cd7691ca376b8225eb837e2090ce47dfe0b1bdb8442e4c8f5628ecb7bf"},"schema_version":"1.0"},"canonical_sha256":"75b169cff467f5a6b33a90cd0125a52a9c1300c2b5caf3926a3058966893dfe5","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:15:23.162238Z","signature_b64":"FmsqX6EWd2p7ps2ySsbMOhKN0DMiYsNZSfrC5gwB4NLgFbR/rLXWQNDPH/Cx7BQr5Tr/v9GGpPu4SKsvoa/PBA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"75b169cff467f5a6b33a90cd0125a52a9c1300c2b5caf3926a3058966893dfe5","last_reissued_at":"2026-07-05T06:15:23.161765Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:15:23.161765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2302.00575","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":"2026-07-05T06:15:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"vipl6GVOx9pur8bSTxTwJ8x55hMgzAI8fa/bBSPWHalVF+KleMPLx+ypA2Ph+dbCfKm1gLntgzADXK/eMv8KBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T20:21:27.757707Z"},"content_sha256":"a1836bfd2ae8a008b5a7fe2e18c5866beba124725332714b703279a3269bf510","schema_version":"1.0","event_id":"sha256:a1836bfd2ae8a008b5a7fe2e18c5866beba124725332714b703279a3269bf510"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:OWYWTT7UM722NMZ2SDGQCJNFFK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Adaptive hp-Refinement for Spectral Elements in Numerical Relativity","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"gr-qc","authors_text":"Bernd Br\\\"ugmann, Daniela Cors, David Hilditch, Sarah Renkhoff","submitted_at":"2023-02-01T16:48:42Z","abstract_excerpt":"When a numerical simulation has to handle a physics problem with a wide range of time-dependent length scales, dynamically adaptive discretizations can be the method of choice. We present a major upgrade to the numerical relativity code bamps in the form of fully adaptive, physics-agnostic hp-refinement. We describe the foundations of mesh refinement in the context of spectral element methods, the precise algorithm used to perform refinement in bamps, as well as several indicator functions used to drive it. Finally, we test the performance, scaling, and the accuracy of the code in treating sev"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.00575","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/2302.00575/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":"2026-07-05T06:15:23Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"N4C85c9GM7Yp+SzuLYMJG2V/GgNm7lV72AKw6knqDzJgW8cG5vcakDiMLlddIzdbjgPuV54uVzQOBAWY4u4oAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T20:21:27.758229Z"},"content_sha256":"dbd32e6510aa92767b8cf723e5b485bb93538c9798eea8df2dc9fa3ee11c5f82","schema_version":"1.0","event_id":"sha256:dbd32e6510aa92767b8cf723e5b485bb93538c9798eea8df2dc9fa3ee11c5f82"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OWYWTT7UM722NMZ2SDGQCJNFFK/bundle.json","state_url":"https://pith.science/pith/OWYWTT7UM722NMZ2SDGQCJNFFK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OWYWTT7UM722NMZ2SDGQCJNFFK/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":"2026-08-03T20:21:27Z","links":{"resolver":"https://pith.science/pith/OWYWTT7UM722NMZ2SDGQCJNFFK","bundle":"https://pith.science/pith/OWYWTT7UM722NMZ2SDGQCJNFFK/bundle.json","state":"https://pith.science/pith/OWYWTT7UM722NMZ2SDGQCJNFFK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OWYWTT7UM722NMZ2SDGQCJNFFK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:OWYWTT7UM722NMZ2SDGQCJNFFK","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":"25d9a2cd7691ca376b8225eb837e2090ce47dfe0b1bdb8442e4c8f5628ecb7bf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-02-01T16:48:42Z","title_canon_sha256":"23510b8bd7c5d01f84f9ed3b693d05f4c17167debab89c1b26a7a103c695d749"},"schema_version":"1.0","source":{"id":"2302.00575","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2302.00575","created_at":"2026-07-05T06:15:23Z"},{"alias_kind":"arxiv_version","alias_value":"2302.00575v1","created_at":"2026-07-05T06:15:23Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2302.00575","created_at":"2026-07-05T06:15:23Z"},{"alias_kind":"pith_short_12","alias_value":"OWYWTT7UM722","created_at":"2026-07-05T06:15:23Z"},{"alias_kind":"pith_short_16","alias_value":"OWYWTT7UM722NMZ2","created_at":"2026-07-05T06:15:23Z"},{"alias_kind":"pith_short_8","alias_value":"OWYWTT7U","created_at":"2026-07-05T06:15:23Z"}],"graph_snapshots":[{"event_id":"sha256:dbd32e6510aa92767b8cf723e5b485bb93538c9798eea8df2dc9fa3ee11c5f82","target":"graph","created_at":"2026-07-05T06:15:23Z","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/2302.00575/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"When a numerical simulation has to handle a physics problem with a wide range of time-dependent length scales, dynamically adaptive discretizations can be the method of choice. We present a major upgrade to the numerical relativity code bamps in the form of fully adaptive, physics-agnostic hp-refinement. We describe the foundations of mesh refinement in the context of spectral element methods, the precise algorithm used to perform refinement in bamps, as well as several indicator functions used to drive it. Finally, we test the performance, scaling, and the accuracy of the code in treating sev","authors_text":"Bernd Br\\\"ugmann, Daniela Cors, David Hilditch, Sarah Renkhoff","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-02-01T16:48:42Z","title":"Adaptive hp-Refinement for Spectral Elements in Numerical Relativity"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2302.00575","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:a1836bfd2ae8a008b5a7fe2e18c5866beba124725332714b703279a3269bf510","target":"record","created_at":"2026-07-05T06:15:23Z","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":"25d9a2cd7691ca376b8225eb837e2090ce47dfe0b1bdb8442e4c8f5628ecb7bf","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"gr-qc","submitted_at":"2023-02-01T16:48:42Z","title_canon_sha256":"23510b8bd7c5d01f84f9ed3b693d05f4c17167debab89c1b26a7a103c695d749"},"schema_version":"1.0","source":{"id":"2302.00575","kind":"arxiv","version":1}},"canonical_sha256":"75b169cff467f5a6b33a90cd0125a52a9c1300c2b5caf3926a3058966893dfe5","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"75b169cff467f5a6b33a90cd0125a52a9c1300c2b5caf3926a3058966893dfe5","first_computed_at":"2026-07-05T06:15:23.161765Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:15:23.161765Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FmsqX6EWd2p7ps2ySsbMOhKN0DMiYsNZSfrC5gwB4NLgFbR/rLXWQNDPH/Cx7BQr5Tr/v9GGpPu4SKsvoa/PBA==","signature_status":"signed_v1","signed_at":"2026-07-05T06:15:23.162238Z","signed_message":"canonical_sha256_bytes"},"source_id":"2302.00575","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a1836bfd2ae8a008b5a7fe2e18c5866beba124725332714b703279a3269bf510","sha256:dbd32e6510aa92767b8cf723e5b485bb93538c9798eea8df2dc9fa3ee11c5f82"],"state_sha256":"0603b7a3001de4aa69677e0eddf7f5d20fe577c23d6c763b2046f2ff6025a096"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"RL/JyHCkZRf7qBz0dmvrRS86yjRv+C7GvLybCIRJg5xNvelIn6zOo/w3sRtAeXHRXJ+LoiaEaReSeH1RYS6NDA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T20:21:27.763312Z","bundle_sha256":"d5dae2aaeea1aaac7c09e71d68c0ed0f3f718533cd178262f8a93283f5add203"}}