{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:KR4272KXUOWLM5N4OJX4KBD25D","short_pith_number":"pith:KR4272KX","canonical_record":{"source":{"id":"1406.6279","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2014-06-24T15:32:05Z","cross_cats_sorted":[],"title_canon_sha256":"e59fadb33028d2a7f49074f9379e5550a069740ec0c2eaba96f3de29af709e40","abstract_canon_sha256":"6a934345782d972a05fc12759ff2517cb55e7d49539a051b840075a87c6a60a4"},"schema_version":"1.0"},"canonical_sha256":"5479afe957a3acb675bc726fc5047ae8d9f4f99791eca6f30b070adb97f625a8","source":{"kind":"arxiv","id":"1406.6279","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.6279","created_at":"2026-05-18T02:49:03Z"},{"alias_kind":"arxiv_version","alias_value":"1406.6279v1","created_at":"2026-05-18T02:49:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.6279","created_at":"2026-05-18T02:49:03Z"},{"alias_kind":"pith_short_12","alias_value":"KR4272KXUOWL","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"KR4272KXUOWLM5N4","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"KR4272KX","created_at":"2026-05-18T12:28:35Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:KR4272KXUOWLM5N4OJX4KBD25D","target":"record","payload":{"canonical_record":{"source":{"id":"1406.6279","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2014-06-24T15:32:05Z","cross_cats_sorted":[],"title_canon_sha256":"e59fadb33028d2a7f49074f9379e5550a069740ec0c2eaba96f3de29af709e40","abstract_canon_sha256":"6a934345782d972a05fc12759ff2517cb55e7d49539a051b840075a87c6a60a4"},"schema_version":"1.0"},"canonical_sha256":"5479afe957a3acb675bc726fc5047ae8d9f4f99791eca6f30b070adb97f625a8","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:49:03.741646Z","signature_b64":"PCdaeUxLMz04YUPOp1UoVlw8f2cF6KM7H6rZxWuC2veBwmWsA4E5pmrkDIuA5bQHF3A9d2CR9VfXEtRj8tmKBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5479afe957a3acb675bc726fc5047ae8d9f4f99791eca6f30b070adb97f625a8","last_reissued_at":"2026-05-18T02:49:03.741206Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:49:03.741206Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1406.6279","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":"2026-05-18T02:49:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"sqDker7HJtmOktdpDjJAKJBTcdl/FoagMmwObYVPwWHHoXD9+VmE5+uss1jDnVL4DmZwtyen+ucxoTsX9nCMAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T13:30:16.349396Z"},"content_sha256":"cbc04bd3367a319a9de98d4aa27387474c2bcd9a180b28cdef0a2bcc94eba7e4","schema_version":"1.0","event_id":"sha256:cbc04bd3367a319a9de98d4aa27387474c2bcd9a180b28cdef0a2bcc94eba7e4"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:KR4272KXUOWLM5N4OJX4KBD25D","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Fast algorithms for simulating chiral fermions in U(1)lattice gauge theory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-lat","authors_text":"Artan Bori\\c{c}i, Dafina Xhako","submitted_at":"2014-06-24T15:32:05Z","abstract_excerpt":"In order to develop fast inversion algorithms we have used overlap solvers in two dimensions. Lattice QED theory with U(1) group symmetry in two dimensional space-times dimensions has always been a testing ground for algorithms. By the other side, motivated by our previews work that the two-grid algorithm converge faster than the standard iterative methods for overlap inversion but not for all quark masses, we thought to test this idea in less dimensions such as U(1) gauge theory. Our main objective of this paper it is to implement and develop the idea of a two level algorithm in a new algorit"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.6279","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":"2026-05-18T02:49:03Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ZQJKty4UsX4ewh1Aisl71IiB5SGruzyvJbN8FnhoJUn1AJ2KW5TrlcLeQKJ3p/ERS7A9PxRTiTp0TBqQvFT6Dg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-23T13:30:16.349767Z"},"content_sha256":"6814047d9b6e59dd4dce3ce9d79ece0debd6b6da4f8b376bc0d0e88d6763577e","schema_version":"1.0","event_id":"sha256:6814047d9b6e59dd4dce3ce9d79ece0debd6b6da4f8b376bc0d0e88d6763577e"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/KR4272KXUOWLM5N4OJX4KBD25D/bundle.json","state_url":"https://pith.science/pith/KR4272KXUOWLM5N4OJX4KBD25D/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/KR4272KXUOWLM5N4OJX4KBD25D/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":"2026-06-23T13:30:16Z","links":{"resolver":"https://pith.science/pith/KR4272KXUOWLM5N4OJX4KBD25D","bundle":"https://pith.science/pith/KR4272KXUOWLM5N4OJX4KBD25D/bundle.json","state":"https://pith.science/pith/KR4272KXUOWLM5N4OJX4KBD25D/state.json","well_known_bundle":"https://pith.science/.well-known/pith/KR4272KXUOWLM5N4OJX4KBD25D/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:KR4272KXUOWLM5N4OJX4KBD25D","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":"6a934345782d972a05fc12759ff2517cb55e7d49539a051b840075a87c6a60a4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2014-06-24T15:32:05Z","title_canon_sha256":"e59fadb33028d2a7f49074f9379e5550a069740ec0c2eaba96f3de29af709e40"},"schema_version":"1.0","source":{"id":"1406.6279","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1406.6279","created_at":"2026-05-18T02:49:03Z"},{"alias_kind":"arxiv_version","alias_value":"1406.6279v1","created_at":"2026-05-18T02:49:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1406.6279","created_at":"2026-05-18T02:49:03Z"},{"alias_kind":"pith_short_12","alias_value":"KR4272KXUOWL","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_16","alias_value":"KR4272KXUOWLM5N4","created_at":"2026-05-18T12:28:35Z"},{"alias_kind":"pith_short_8","alias_value":"KR4272KX","created_at":"2026-05-18T12:28:35Z"}],"graph_snapshots":[{"event_id":"sha256:6814047d9b6e59dd4dce3ce9d79ece0debd6b6da4f8b376bc0d0e88d6763577e","target":"graph","created_at":"2026-05-18T02:49:03Z","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":"In order to develop fast inversion algorithms we have used overlap solvers in two dimensions. Lattice QED theory with U(1) group symmetry in two dimensional space-times dimensions has always been a testing ground for algorithms. By the other side, motivated by our previews work that the two-grid algorithm converge faster than the standard iterative methods for overlap inversion but not for all quark masses, we thought to test this idea in less dimensions such as U(1) gauge theory. Our main objective of this paper it is to implement and develop the idea of a two level algorithm in a new algorit","authors_text":"Artan Bori\\c{c}i, Dafina Xhako","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2014-06-24T15:32:05Z","title":"Fast algorithms for simulating chiral fermions in U(1)lattice gauge theory"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1406.6279","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:cbc04bd3367a319a9de98d4aa27387474c2bcd9a180b28cdef0a2bcc94eba7e4","target":"record","created_at":"2026-05-18T02:49:03Z","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":"6a934345782d972a05fc12759ff2517cb55e7d49539a051b840075a87c6a60a4","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-lat","submitted_at":"2014-06-24T15:32:05Z","title_canon_sha256":"e59fadb33028d2a7f49074f9379e5550a069740ec0c2eaba96f3de29af709e40"},"schema_version":"1.0","source":{"id":"1406.6279","kind":"arxiv","version":1}},"canonical_sha256":"5479afe957a3acb675bc726fc5047ae8d9f4f99791eca6f30b070adb97f625a8","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5479afe957a3acb675bc726fc5047ae8d9f4f99791eca6f30b070adb97f625a8","first_computed_at":"2026-05-18T02:49:03.741206Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:49:03.741206Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"PCdaeUxLMz04YUPOp1UoVlw8f2cF6KM7H6rZxWuC2veBwmWsA4E5pmrkDIuA5bQHF3A9d2CR9VfXEtRj8tmKBw==","signature_status":"signed_v1","signed_at":"2026-05-18T02:49:03.741646Z","signed_message":"canonical_sha256_bytes"},"source_id":"1406.6279","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:cbc04bd3367a319a9de98d4aa27387474c2bcd9a180b28cdef0a2bcc94eba7e4","sha256:6814047d9b6e59dd4dce3ce9d79ece0debd6b6da4f8b376bc0d0e88d6763577e"],"state_sha256":"539d4d722f2e5ad3634445db0f21b3e4f3b43cc8815f49e3100c7a54b95f7036"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"4WPhbg3lkJje/mSIONA10xnVlmtJeOC/exL3SE8IMFfHwrrjmAaQmgXpZQjwj1BQ7X4/w2EpbNFG53GmIjSGAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-23T13:30:16.351742Z","bundle_sha256":"d2e3374d8e11585cec78b4d19dda9d0c1e678c3b55f24eb4f442f0ae95e51e9d"}}