{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1999:BK427SLGY4HGLXEUXELRFW2EXO","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":"f40f7258efcefa24a7d80e0ae1494126fe829b4479c83a4c8ad15f7354699435","cross_cats_sorted":[],"license":"","primary_cat":"hep-lat","submitted_at":"1999-08-12T16:35:21Z","title_canon_sha256":"e50c402322475fa63b694197716c086890501ca12a109c228ac5be51ae8eea16"},"schema_version":"1.0","source":{"id":"hep-lat/9908012","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-lat/9908012","created_at":"2026-05-18T01:39:11Z"},{"alias_kind":"arxiv_version","alias_value":"hep-lat/9908012v1","created_at":"2026-05-18T01:39:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-lat/9908012","created_at":"2026-05-18T01:39:11Z"},{"alias_kind":"pith_short_12","alias_value":"BK427SLGY4HG","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_16","alias_value":"BK427SLGY4HGLXEU","created_at":"2026-05-18T12:25:49Z"},{"alias_kind":"pith_short_8","alias_value":"BK427SLG","created_at":"2026-05-18T12:25:49Z"}],"graph_snapshots":[{"event_id":"sha256:ee3f6e241a8a655227748250cba3d12c74b2095f7e80871036eacbb32ad4af01","target":"graph","created_at":"2026-05-18T01:39:11Z","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 test exact and approximate Ginsparg-Wilson fermions with respect to their chiral and scaling behavior in the 2-flavor Schwinger model. We first consider explicit approximate GW fermions in a short range, then we proceed to their chiral correction by means of the ``overlap formula'', and finally we discuss a numerically efficient perturbative chiral correction. In this way we combine very good chiral and scaling properties with a relatively modest computational effort.","authors_text":"I. Hip, W. Bietenholz","cross_cats":[],"headline":"","license":"","primary_cat":"hep-lat","submitted_at":"1999-08-12T16:35:21Z","title":"Improved Overlap Fermions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-lat/9908012","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":"sha256:2287d4feed1920d4fd52812797c365d799b88ac7a86ae49e5d794e1d02e1f6e8","target":"record","created_at":"2026-05-18T01:39:11Z","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":"f40f7258efcefa24a7d80e0ae1494126fe829b4479c83a4c8ad15f7354699435","cross_cats_sorted":[],"license":"","primary_cat":"hep-lat","submitted_at":"1999-08-12T16:35:21Z","title_canon_sha256":"e50c402322475fa63b694197716c086890501ca12a109c228ac5be51ae8eea16"},"schema_version":"1.0","source":{"id":"hep-lat/9908012","kind":"arxiv","version":1}},"canonical_sha256":"0ab9afc966c70e65dc94b91712db44bb85b72f4256be6bf6eeafac325769d45d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"0ab9afc966c70e65dc94b91712db44bb85b72f4256be6bf6eeafac325769d45d","first_computed_at":"2026-05-18T01:39:11.550382Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:39:11.550382Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0iDgZqSRe/61ArAD8OOwiyEyixlmjnXmYLjWzfrOoFVfMul8U5l0TgbTQY/VFGunIctyQgGBLNzTbWV3JlacDA==","signature_status":"signed_v1","signed_at":"2026-05-18T01:39:11.550766Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-lat/9908012","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2287d4feed1920d4fd52812797c365d799b88ac7a86ae49e5d794e1d02e1f6e8","sha256:ee3f6e241a8a655227748250cba3d12c74b2095f7e80871036eacbb32ad4af01"],"state_sha256":"13a604fed705e873625b833d9d9a1297f5352804cd76efcce83222f26d6773cb"}