{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:3FESVPEAH4Y2WFGS7PUAIMVTKO","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":"db6333b04744180e78d661b86a7120a2c08706d20dac94b5853497350abbd0a9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.FL","submitted_at":"2010-12-10T17:01:34Z","title_canon_sha256":"067c9b3ca8760c1032d46d4bc74515a19dc808e47b9ef8aa5f7ea3199ce7cc55"},"schema_version":"1.0","source":{"id":"1012.2321","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1012.2321","created_at":"2026-05-18T04:07:19Z"},{"alias_kind":"arxiv_version","alias_value":"1012.2321v2","created_at":"2026-05-18T04:07:19Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1012.2321","created_at":"2026-05-18T04:07:19Z"},{"alias_kind":"pith_short_12","alias_value":"3FESVPEAH4Y2","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_16","alias_value":"3FESVPEAH4Y2WFGS","created_at":"2026-05-18T12:26:03Z"},{"alias_kind":"pith_short_8","alias_value":"3FESVPEA","created_at":"2026-05-18T12:26:03Z"}],"graph_snapshots":[{"event_id":"sha256:6874f6f9f99fc2a9ab367812b4d9b7e1f846e09c54f87f620741f5691bac3aae","target":"graph","created_at":"2026-05-18T04:07:19Z","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":"Operator precedence grammars define a classical Boolean and deterministic context-free family (called Floyd languages or FLs). FLs have been shown to strictly include the well-known visibly pushdown languages, and enjoy the same nice closure properties. We introduce here Floyd automata, an equivalent operational formalism for defining FLs. This also permits to extend the class to deal with infinite strings to perform for instance model checking.","authors_text":"Dino Mandrioli, Matteo Pradella, Violetta Lonati","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.FL","submitted_at":"2010-12-10T17:01:34Z","title":"Precedence Automata and Languages"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.2321","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":"sha256:3c744e43b996800c668ef852054fa0672914311e3e5f83cef05d1652d7259248","target":"record","created_at":"2026-05-18T04:07:19Z","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":"db6333b04744180e78d661b86a7120a2c08706d20dac94b5853497350abbd0a9","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.FL","submitted_at":"2010-12-10T17:01:34Z","title_canon_sha256":"067c9b3ca8760c1032d46d4bc74515a19dc808e47b9ef8aa5f7ea3199ce7cc55"},"schema_version":"1.0","source":{"id":"1012.2321","kind":"arxiv","version":2}},"canonical_sha256":"d9492abc803f31ab14d2fbe80432b3538ea2ed20365b338535e1d690a97fb038","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d9492abc803f31ab14d2fbe80432b3538ea2ed20365b338535e1d690a97fb038","first_computed_at":"2026-05-18T04:07:19.865294Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:07:19.865294Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"epKKQTav/uXbj9saewRw/rBmmzSnQR4WlzL1qQwI96T0rF4zQwg4if306POiiW3ltoBUA8l8FcCdR2C7QNstDg==","signature_status":"signed_v1","signed_at":"2026-05-18T04:07:19.865991Z","signed_message":"canonical_sha256_bytes"},"source_id":"1012.2321","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:3c744e43b996800c668ef852054fa0672914311e3e5f83cef05d1652d7259248","sha256:6874f6f9f99fc2a9ab367812b4d9b7e1f846e09c54f87f620741f5691bac3aae"],"state_sha256":"cd13411f5983a7dcd20f70b8b9968527b34ebeb71b483ca826f5122119e01c74"}