{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:EEX74ZTV77TTLXS6PI56AAH3M7","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":"c26a943db1509926b636d203a020555b42cd8819e79e6ab2cbc37b93aa17d0cf","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"2002-06-25T16:17:52Z","title_canon_sha256":"0986bb7be9be6f24b75dbdb9a13113a49e0e9f79e2ab237bcac0c93e8678447e"},"schema_version":"1.0","source":{"id":"gr-qc/0206072","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"gr-qc/0206072","created_at":"2026-07-04T15:32:07Z"},{"alias_kind":"arxiv_version","alias_value":"gr-qc/0206072v2","created_at":"2026-07-04T15:32:07Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.gr-qc/0206072","created_at":"2026-07-04T15:32:07Z"},{"alias_kind":"pith_short_12","alias_value":"EEX74ZTV77TT","created_at":"2026-07-04T15:32:07Z"},{"alias_kind":"pith_short_16","alias_value":"EEX74ZTV77TTLXS6","created_at":"2026-07-04T15:32:07Z"},{"alias_kind":"pith_short_8","alias_value":"EEX74ZTV","created_at":"2026-07-04T15:32:07Z"}],"graph_snapshots":[{"event_id":"sha256:50529dae78a33f4b9c2321512ab0c1de1c2d2e58d7b5e99599c15a47d4393108","target":"graph","created_at":"2026-07-04T15:32:07Z","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/gr-qc/0206072/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Numerical relativity has faced the problem that standard 3+1 simulations of black hole spacetimes without singularity excision and with singularity avoiding lapse and vanishing shift fail after an evolution time of around 30-40M due to the so-called slice stretching. We discuss lapse and shift conditions for the non-excision case that effectively cure slice stretching and allow run times of 1000M and more.","authors_text":"Bernd Bruegmann, Denis Pollney, Edward Seidel, Michael Koppitz, Miguel Alcubierre, Peter Diener, Ryoji Takahashi","cross_cats":[],"headline":"","license":"","primary_cat":"gr-qc","submitted_at":"2002-06-25T16:17:52Z","title":"Gauge conditions for long-term numerical black hole evolutions without excision"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"gr-qc/0206072","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":"sha256:405757f51ca953dfd110561b4a6a1124f9738f8daaf24e9c5ac46c8670be1ef1","target":"record","created_at":"2026-07-04T15:32:07Z","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":"c26a943db1509926b636d203a020555b42cd8819e79e6ab2cbc37b93aa17d0cf","cross_cats_sorted":[],"license":"","primary_cat":"gr-qc","submitted_at":"2002-06-25T16:17:52Z","title_canon_sha256":"0986bb7be9be6f24b75dbdb9a13113a49e0e9f79e2ab237bcac0c93e8678447e"},"schema_version":"1.0","source":{"id":"gr-qc/0206072","kind":"arxiv","version":2}},"canonical_sha256":"212ffe6675ffe735de5e7a3be000fb67d8857c1a3a87a292cbd50d2bee760083","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"212ffe6675ffe735de5e7a3be000fb67d8857c1a3a87a292cbd50d2bee760083","first_computed_at":"2026-07-04T15:32:07.389255Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:32:07.389255Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"+bic3L1B2CiZjpPnok987Zx0soY5/D6nct+u8FDDm9GDPadB8mtcGQZiB3j5xB/HDgSounGFB3Joy4pH1IL3CQ==","signature_status":"signed_v1","signed_at":"2026-07-04T15:32:07.389675Z","signed_message":"canonical_sha256_bytes"},"source_id":"gr-qc/0206072","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:405757f51ca953dfd110561b4a6a1124f9738f8daaf24e9c5ac46c8670be1ef1","sha256:50529dae78a33f4b9c2321512ab0c1de1c2d2e58d7b5e99599c15a47d4393108"],"state_sha256":"424cebd955c8b412698580afe2dc0876337ae268120b0dc0c369ad74a535133b"}