{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:OZ7UAY3UFEKPVQMU5MBP5BY453","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":"8036c03d9ff019eff73a9a5e112e5cd8a142e0dfd92651654a8c843f41a889e9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CG","submitted_at":"2018-12-13T13:19:40Z","title_canon_sha256":"8726be03f7158ac444b71e586dbba6fbc37e4ba20684e8937d1a389cfc846971"},"schema_version":"1.0","source":{"id":"1812.05410","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1812.05410","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"arxiv_version","alias_value":"1812.05410v2","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1812.05410","created_at":"2026-05-17T23:42:42Z"},{"alias_kind":"pith_short_12","alias_value":"OZ7UAY3UFEKP","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_16","alias_value":"OZ7UAY3UFEKPVQMU","created_at":"2026-05-18T12:32:43Z"},{"alias_kind":"pith_short_8","alias_value":"OZ7UAY3U","created_at":"2026-05-18T12:32:43Z"}],"graph_snapshots":[{"event_id":"sha256:6144928980bd6991a361aab575e7070f4e8355c679d07d717da90966357c3a18","target":"graph","created_at":"2026-05-17T23:42:42Z","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":"The potato-peeling problem (also known as convex skull) is a fundamental computational geometry problem and the fastest algorithm to date runs in $O(n^8)$ time for a polygon with $n$ vertices that may have holes. In this paper, we consider a digital version of the problem. A set $K \\subset \\mathbb{Z}^2$ is digital convex if $conv(K) \\cap \\mathbb{Z}^2 = K$, where $conv(K)$ denotes the convex hull of $K$. Given a set $S$ of $n$ lattice points, we present polynomial time algorithms to the problems of finding the largest digital convex subset $K$ of $S$ (digital potato-peeling problem) and the lar","authors_text":"Guilherme D. da Fonseca, Lo\\\"ic Crombez, Yan G\\'erard","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CG","submitted_at":"2018-12-13T13:19:40Z","title":"Peeling Digital Potatoes"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.05410","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":"sha256:6f3684b40432381f010d2f389fd998a32973ef91b47e5adea76ec253177b4916","target":"record","created_at":"2026-05-17T23:42:42Z","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":"8036c03d9ff019eff73a9a5e112e5cd8a142e0dfd92651654a8c843f41a889e9","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.CG","submitted_at":"2018-12-13T13:19:40Z","title_canon_sha256":"8726be03f7158ac444b71e586dbba6fbc37e4ba20684e8937d1a389cfc846971"},"schema_version":"1.0","source":{"id":"1812.05410","kind":"arxiv","version":2}},"canonical_sha256":"767f4063742914fac194eb02fe871ceee4b1af673b68f6352a23e0b9c6a54044","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"767f4063742914fac194eb02fe871ceee4b1af673b68f6352a23e0b9c6a54044","first_computed_at":"2026-05-17T23:42:42.636970Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-17T23:42:42.636970Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"LifGqvPDOTaweB337UYkkaFZyxcmLB3gbM98wuTuq089YVZv9UuU+GiFH/Daufg6ML08i67zAEQLFDqcYTO9Cg==","signature_status":"signed_v1","signed_at":"2026-05-17T23:42:42.637756Z","signed_message":"canonical_sha256_bytes"},"source_id":"1812.05410","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:6f3684b40432381f010d2f389fd998a32973ef91b47e5adea76ec253177b4916","sha256:6144928980bd6991a361aab575e7070f4e8355c679d07d717da90966357c3a18"],"state_sha256":"10dda056c014a39f38a8aca90f5aba135235209694cbfce8d7b5759e753ecdd4"}