{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:ZEJKRACFLJUDFDD2EXHO7GKG5Z","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":"8d25469e1f6fae8cc480869422d520f50a094624d14b5ed8e0f77e142e72be8d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2015-11-10T06:51:33Z","title_canon_sha256":"d0571c1d7646984621a014c7bc11a739efaeb868306f5360d46ba7ad94b18339"},"schema_version":"1.0","source":{"id":"1511.03003","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1511.03003","created_at":"2026-05-18T01:27:17Z"},{"alias_kind":"arxiv_version","alias_value":"1511.03003v1","created_at":"2026-05-18T01:27:17Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1511.03003","created_at":"2026-05-18T01:27:17Z"},{"alias_kind":"pith_short_12","alias_value":"ZEJKRACFLJUD","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZEJKRACFLJUDFDD2","created_at":"2026-05-18T12:29:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZEJKRACF","created_at":"2026-05-18T12:29:52Z"}],"graph_snapshots":[{"event_id":"sha256:42d90cba35c1bc58732e1990cd89c8b5ccca1ed25b40cad6c001ab7133a3e7e1","target":"graph","created_at":"2026-05-18T01:27:17Z","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 investigate the decidability of model-checking logics of time, knowledge and probability, with respect to two epistemic semantics: the clock and synchronous perfect recall semantics in partially observed discrete-time Markov chains. Decidability results are known for certain restricted logics with respect to these semantics, subject to a variety of restrictions that are either unexplained or involve a longstanding unsolved mathematical problem. We show that mild generalizations of the known decidable cases suffice to render the model checking problem definitively undecidable. In particular,","authors_text":"Manas K. Patra, Ron van der Meyden","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2015-11-10T06:51:33Z","title":"Undecidable Cases of Model Checking Probabilistic Temporal-Epistemic Logic"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1511.03003","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":"sha256:33a320095acb78a17a114aa11a83e6b6c3399daf84b03db8653efa824115d28f","target":"record","created_at":"2026-05-18T01:27:17Z","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":"8d25469e1f6fae8cc480869422d520f50a094624d14b5ed8e0f77e142e72be8d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.LO","submitted_at":"2015-11-10T06:51:33Z","title_canon_sha256":"d0571c1d7646984621a014c7bc11a739efaeb868306f5360d46ba7ad94b18339"},"schema_version":"1.0","source":{"id":"1511.03003","kind":"arxiv","version":1}},"canonical_sha256":"c912a880455a68328c7a25ceef9946ee7b6238cc1d9d2ddcd62aca6874df0786","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c912a880455a68328c7a25ceef9946ee7b6238cc1d9d2ddcd62aca6874df0786","first_computed_at":"2026-05-18T01:27:17.251464Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:27:17.251464Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xhdBaTsITtCCGsP3Lm2BBkultXi2efD8lZbsc0EL9cejfIan6p1t/GknxhxAW10IO/sj6O5Sgi5osZo8dTqrBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:27:17.252079Z","signed_message":"canonical_sha256_bytes"},"source_id":"1511.03003","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:33a320095acb78a17a114aa11a83e6b6c3399daf84b03db8653efa824115d28f","sha256:42d90cba35c1bc58732e1990cd89c8b5ccca1ed25b40cad6c001ab7133a3e7e1"],"state_sha256":"faa801aa987c9cf0521e82760ae454b1446281a67e0e48e4fe579a4af441d015"}