{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:OTK6QK6E7FK7RDIQGVOPKQLQ4N","short_pith_number":"pith:OTK6QK6E","canonical_record":{"source":{"id":"1310.1316","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2013-10-04T15:21:25Z","cross_cats_sorted":["cs.DB"],"title_canon_sha256":"0e05e73a695c6984deaa5b9026254f16592d05fc395d9235c1034e3d59e073d5","abstract_canon_sha256":"a9cb97d3d85c34da06d09f873af00d18ba20ba26a9f304f3d15204664c9cb270"},"schema_version":"1.0"},"canonical_sha256":"74d5e82bc4f955f88d10355cf54170e3695dc6ab6ca22dbc7277273f8f7f2d10","source":{"kind":"arxiv","id":"1310.1316","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.1316","created_at":"2026-05-18T03:11:22Z"},{"alias_kind":"arxiv_version","alias_value":"1310.1316v1","created_at":"2026-05-18T03:11:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.1316","created_at":"2026-05-18T03:11:22Z"},{"alias_kind":"pith_short_12","alias_value":"OTK6QK6E7FK7","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OTK6QK6E7FK7RDIQ","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OTK6QK6E","created_at":"2026-05-18T12:27:54Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:OTK6QK6E7FK7RDIQGVOPKQLQ4N","target":"record","payload":{"canonical_record":{"source":{"id":"1310.1316","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2013-10-04T15:21:25Z","cross_cats_sorted":["cs.DB"],"title_canon_sha256":"0e05e73a695c6984deaa5b9026254f16592d05fc395d9235c1034e3d59e073d5","abstract_canon_sha256":"a9cb97d3d85c34da06d09f873af00d18ba20ba26a9f304f3d15204664c9cb270"},"schema_version":"1.0"},"canonical_sha256":"74d5e82bc4f955f88d10355cf54170e3695dc6ab6ca22dbc7277273f8f7f2d10","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:11:22.871954Z","signature_b64":"FUI9wgaHi3oYjQdI6lF6y9yxMSC2ev0YGkcg5iATqVADZaveNxfu46QlGJARGpEvhX3PS4BnZ7owG+4pFnayBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"74d5e82bc4f955f88d10355cf54170e3695dc6ab6ca22dbc7277273f8f7f2d10","last_reissued_at":"2026-05-18T03:11:22.871122Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:11:22.871122Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1310.1316","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":"2026-05-18T03:11:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"R0TCesM+XCthGRSNKL45ovjliliLunGQnQXkcwpZPzFtF20fC62KEfkj91+WkJwM4jVSS3L+RpOtUapAimSMDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T06:04:24.577070Z"},"content_sha256":"2ebcf5548730bac66033c90e57304d91abcbdb12b872077988667f58c85a47c0","schema_version":"1.0","event_id":"sha256:2ebcf5548730bac66033c90e57304d91abcbdb12b872077988667f58c85a47c0"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:OTK6QK6E7FK7RDIQGVOPKQLQ4N","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A note on monadic datalog on unranked trees","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["cs.DB"],"primary_cat":"cs.LO","authors_text":"Andr\\'e Frochaux, Nicole Schweikardt","submitted_at":"2013-10-04T15:21:25Z","abstract_excerpt":"In the article 'Recursive queries on trees and data trees' (ICDT'13), Abiteboul et al., asked whether the containment problem for monadic datalog over unordered unranked labeled trees using the child relation and the descendant relation is decidable. This note gives a positive answer to this question, as well as an overview of the relative expressive power of monadic datalog on various representations of unranked trees."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.1316","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":"2026-05-18T03:11:22Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BCoEEEi+Bb2QYfqMiDXG5w6BE20I8c+S6s18ThQk0Qv2/tepKgqTnldvDqWiQPf4P4tvl21eOsUzqMD8MKZTDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T06:04:24.577429Z"},"content_sha256":"7045b56a81716ad8ccd6c6f63566090e51ea9755e245b68a330c9cab492869d5","schema_version":"1.0","event_id":"sha256:7045b56a81716ad8ccd6c6f63566090e51ea9755e245b68a330c9cab492869d5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/OTK6QK6E7FK7RDIQGVOPKQLQ4N/bundle.json","state_url":"https://pith.science/pith/OTK6QK6E7FK7RDIQGVOPKQLQ4N/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/OTK6QK6E7FK7RDIQGVOPKQLQ4N/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":"2026-06-03T06:04:24Z","links":{"resolver":"https://pith.science/pith/OTK6QK6E7FK7RDIQGVOPKQLQ4N","bundle":"https://pith.science/pith/OTK6QK6E7FK7RDIQGVOPKQLQ4N/bundle.json","state":"https://pith.science/pith/OTK6QK6E7FK7RDIQGVOPKQLQ4N/state.json","well_known_bundle":"https://pith.science/.well-known/pith/OTK6QK6E7FK7RDIQGVOPKQLQ4N/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:OTK6QK6E7FK7RDIQGVOPKQLQ4N","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":"a9cb97d3d85c34da06d09f873af00d18ba20ba26a9f304f3d15204664c9cb270","cross_cats_sorted":["cs.DB"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2013-10-04T15:21:25Z","title_canon_sha256":"0e05e73a695c6984deaa5b9026254f16592d05fc395d9235c1034e3d59e073d5"},"schema_version":"1.0","source":{"id":"1310.1316","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1310.1316","created_at":"2026-05-18T03:11:22Z"},{"alias_kind":"arxiv_version","alias_value":"1310.1316v1","created_at":"2026-05-18T03:11:22Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1310.1316","created_at":"2026-05-18T03:11:22Z"},{"alias_kind":"pith_short_12","alias_value":"OTK6QK6E7FK7","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_16","alias_value":"OTK6QK6E7FK7RDIQ","created_at":"2026-05-18T12:27:54Z"},{"alias_kind":"pith_short_8","alias_value":"OTK6QK6E","created_at":"2026-05-18T12:27:54Z"}],"graph_snapshots":[{"event_id":"sha256:7045b56a81716ad8ccd6c6f63566090e51ea9755e245b68a330c9cab492869d5","target":"graph","created_at":"2026-05-18T03:11:22Z","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 the article 'Recursive queries on trees and data trees' (ICDT'13), Abiteboul et al., asked whether the containment problem for monadic datalog over unordered unranked labeled trees using the child relation and the descendant relation is decidable. This note gives a positive answer to this question, as well as an overview of the relative expressive power of monadic datalog on various representations of unranked trees.","authors_text":"Andr\\'e Frochaux, Nicole Schweikardt","cross_cats":["cs.DB"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2013-10-04T15:21:25Z","title":"A note on monadic datalog on unranked trees"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1310.1316","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":"sha256:2ebcf5548730bac66033c90e57304d91abcbdb12b872077988667f58c85a47c0","target":"record","created_at":"2026-05-18T03:11:22Z","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":"a9cb97d3d85c34da06d09f873af00d18ba20ba26a9f304f3d15204664c9cb270","cross_cats_sorted":["cs.DB"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2013-10-04T15:21:25Z","title_canon_sha256":"0e05e73a695c6984deaa5b9026254f16592d05fc395d9235c1034e3d59e073d5"},"schema_version":"1.0","source":{"id":"1310.1316","kind":"arxiv","version":1}},"canonical_sha256":"74d5e82bc4f955f88d10355cf54170e3695dc6ab6ca22dbc7277273f8f7f2d10","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"74d5e82bc4f955f88d10355cf54170e3695dc6ab6ca22dbc7277273f8f7f2d10","first_computed_at":"2026-05-18T03:11:22.871122Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:11:22.871122Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"FUI9wgaHi3oYjQdI6lF6y9yxMSC2ev0YGkcg5iATqVADZaveNxfu46QlGJARGpEvhX3PS4BnZ7owG+4pFnayBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T03:11:22.871954Z","signed_message":"canonical_sha256_bytes"},"source_id":"1310.1316","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2ebcf5548730bac66033c90e57304d91abcbdb12b872077988667f58c85a47c0","sha256:7045b56a81716ad8ccd6c6f63566090e51ea9755e245b68a330c9cab492869d5"],"state_sha256":"8f9f17f1a232a1d4208acc939a1cb84d06dbb96e7f5c7785cd26262c1107446b"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"oR0roBeTXXdwf+x4JjJyvhXJG4F4MUjdnq1wYTV1Z3+xkb9dWNbP35E9eFZjZcXNQzGmjY7yitzh8BgWhUPVDw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T06:04:24.579392Z","bundle_sha256":"c20cba39aa7bbf65298fd9f0abab358b0263df82fcf085945cf1a2fbc928d799"}}