{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2024:ZR3QBINF7TEJBBAJAPRTLW6I3J","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":"0c1683dc387f4f7408ea788270154802a98c3d7bf805acc246de52ab12f8ee36","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CG","submitted_at":"2024-12-18T15:21:37Z","title_canon_sha256":"06fe4534e75a3101cc4db8fb5900d9f9564aa1cc7f61d5d48a264fb7e398c1f5"},"schema_version":"1.0","source":{"id":"2412.13938","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2412.13938","created_at":"2026-07-05T11:27:52Z"},{"alias_kind":"arxiv_version","alias_value":"2412.13938v3","created_at":"2026-07-05T11:27:52Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2412.13938","created_at":"2026-07-05T11:27:52Z"},{"alias_kind":"pith_short_12","alias_value":"ZR3QBINF7TEJ","created_at":"2026-07-05T11:27:52Z"},{"alias_kind":"pith_short_16","alias_value":"ZR3QBINF7TEJBBAJ","created_at":"2026-07-05T11:27:52Z"},{"alias_kind":"pith_short_8","alias_value":"ZR3QBINF","created_at":"2026-07-05T11:27:52Z"}],"graph_snapshots":[{"event_id":"sha256:b7ab47e388144834b8b9c53a919decfe9e14083810f7fc65798e7b62395557e0","target":"graph","created_at":"2026-07-05T11:27:52Z","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"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/2412.13938/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper, we study the Contiguous Art Gallery Problem, introduced by Thomas C. Shermer at the 2024 Canadian Conference on Computational Geometry, a variant of the classical art gallery problem from 1973 by Victor Klee.\n  In the contiguous variant, the input is a simple polygon $P$, and the goal is to partition the boundary into a minimum number of polygonal chains such that each chain is visible to a guard.\n  We present a polynomial-time RAM algorithm, which solves the contiguous art gallery problem.\n  Our algorithm is simple and practical, and we make a C++ implementation available.\n  In","authors_text":"Casper Moldrup Rysgaard, Jens Kristian Refsgaard Schou, Magnus Christian Ring Merrild, Rolf Svenning","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CG","submitted_at":"2024-12-18T15:21:37Z","title":"The Contiguous Art Gallery Problem is Solvable in Polynomial Time"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2412.13938","kind":"arxiv","version":3},"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":"sha256:9b54b7823a7445de332e283cf5c1b632faae5b20992ad17224a76a927c5bcf6f","target":"record","created_at":"2026-07-05T11:27:52Z","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":"0c1683dc387f4f7408ea788270154802a98c3d7bf805acc246de52ab12f8ee36","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"cs.CG","submitted_at":"2024-12-18T15:21:37Z","title_canon_sha256":"06fe4534e75a3101cc4db8fb5900d9f9564aa1cc7f61d5d48a264fb7e398c1f5"},"schema_version":"1.0","source":{"id":"2412.13938","kind":"arxiv","version":3}},"canonical_sha256":"cc7700a1a5fcc890840903e335dbc8da527439e0c422e4ce45c0b98743abb5eb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"cc7700a1a5fcc890840903e335dbc8da527439e0c422e4ce45c0b98743abb5eb","first_computed_at":"2026-07-05T11:27:52.154519Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T11:27:52.154519Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vpxEbgccedlvyEOfsXPq1+EkDt0gsujDToVsq8DhzpROe6jMSvGTzmyuSnuxoeldoP4rTvP210hZ9frKoxrBCA==","signature_status":"signed_v1","signed_at":"2026-07-05T11:27:52.155077Z","signed_message":"canonical_sha256_bytes"},"source_id":"2412.13938","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:9b54b7823a7445de332e283cf5c1b632faae5b20992ad17224a76a927c5bcf6f","sha256:b7ab47e388144834b8b9c53a919decfe9e14083810f7fc65798e7b62395557e0"],"state_sha256":"0d0650e840c8f383abf1450c3165a1735c847dcf0344bbcdea0aab0cfea8a7af"}