{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:57BIF2UTUKW4LG7Y7HZU4IXQ7N","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":"b617db92ff05413df6e0c69e95c7018fc4e6b700d0eab04c46115ddd544b3535","cross_cats_sorted":["cs.CG"],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cs.DC","submitted_at":"2012-05-06T01:33:15Z","title_canon_sha256":"8fd6082745713be1d4ac6f45bf9adb4d4ca0cacb737a55c989ae09c5dda34121"},"schema_version":"1.0","source":{"id":"1205.1171","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1205.1171","created_at":"2026-05-18T03:56:11Z"},{"alias_kind":"arxiv_version","alias_value":"1205.1171v1","created_at":"2026-05-18T03:56:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1205.1171","created_at":"2026-05-18T03:56:11Z"},{"alias_kind":"pith_short_12","alias_value":"57BIF2UTUKW4","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_16","alias_value":"57BIF2UTUKW4LG7Y","created_at":"2026-05-18T12:26:53Z"},{"alias_kind":"pith_short_8","alias_value":"57BIF2UT","created_at":"2026-05-18T12:26:53Z"}],"graph_snapshots":[{"event_id":"sha256:16549bedb97c2baf16ca30be33f91b0e99c437a97059eda7c8f4a9273611225b","target":"graph","created_at":"2026-05-18T03:56:11Z","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 describe a pure divide-and-conquer parallel algorithm for computing 3D convex hulls. We implement that algorithm on GPU hardware, and find a significant speedup over comparable CPU implementations.","authors_text":"Jeffrey M. White, Kevin A. Wortman","cross_cats":["cs.CG"],"headline":"","license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cs.DC","submitted_at":"2012-05-06T01:33:15Z","title":"Divide-and-Conquer 3D Convex Hulls on the GPU"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1205.1171","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":"sha256:54e6ae15e5e4f78406bc00d094648c0e850dcd7921b914345d2a0e91d8395ef9","target":"record","created_at":"2026-05-18T03:56:11Z","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":"b617db92ff05413df6e0c69e95c7018fc4e6b700d0eab04c46115ddd544b3535","cross_cats_sorted":["cs.CG"],"license":"http://creativecommons.org/licenses/by/3.0/","primary_cat":"cs.DC","submitted_at":"2012-05-06T01:33:15Z","title_canon_sha256":"8fd6082745713be1d4ac6f45bf9adb4d4ca0cacb737a55c989ae09c5dda34121"},"schema_version":"1.0","source":{"id":"1205.1171","kind":"arxiv","version":1}},"canonical_sha256":"efc282ea93a2adc59bf8f9f34e22f0fb43c304df2c04fb527365032aa614963b","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"efc282ea93a2adc59bf8f9f34e22f0fb43c304df2c04fb527365032aa614963b","first_computed_at":"2026-05-18T03:56:11.918340Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:56:11.918340Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"EQ57C881MwVpUN+54XHX6KeEURycfgZNrbSbgcWkHJZP7jZH+mvhoBsCbMwWWT9Ca0HFxh9RD2Z/NVdp16EDAg==","signature_status":"signed_v1","signed_at":"2026-05-18T03:56:11.918949Z","signed_message":"canonical_sha256_bytes"},"source_id":"1205.1171","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:54e6ae15e5e4f78406bc00d094648c0e850dcd7921b914345d2a0e91d8395ef9","sha256:16549bedb97c2baf16ca30be33f91b0e99c437a97059eda7c8f4a9273611225b"],"state_sha256":"723ab1fb8028d111a417b8b45495b273ad853e46ea8a2504a99ad86d07d5d292"}