{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2022:RLMCLTEELDM4ALKQRQR4UQO7DY","short_pith_number":"pith:RLMCLTEE","canonical_record":{"source":{"id":"2202.12670","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2022-02-25T13:05:39Z","cross_cats_sorted":[],"title_canon_sha256":"6bb44df90d2e5f0684c05cd229391d938f615be2bfc8459a62d8301500b714ca","abstract_canon_sha256":"04d4f2c56fdc06123ddb4240bb3e12aa00b337642d2b606f6b76188b19eaa0e7"},"schema_version":"1.0"},"canonical_sha256":"8ad825cc8458d9c02d508c23ca41df1e05002b4868bb7fb9298b2b3607fdeb98","source":{"kind":"arxiv","id":"2202.12670","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.12670","created_at":"2026-07-05T04:54:53Z"},{"alias_kind":"arxiv_version","alias_value":"2202.12670v1","created_at":"2026-07-05T04:54:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.12670","created_at":"2026-07-05T04:54:53Z"},{"alias_kind":"pith_short_12","alias_value":"RLMCLTEELDM4","created_at":"2026-07-05T04:54:53Z"},{"alias_kind":"pith_short_16","alias_value":"RLMCLTEELDM4ALKQ","created_at":"2026-07-05T04:54:53Z"},{"alias_kind":"pith_short_8","alias_value":"RLMCLTEE","created_at":"2026-07-05T04:54:53Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2022:RLMCLTEELDM4ALKQRQR4UQO7DY","target":"record","payload":{"canonical_record":{"source":{"id":"2202.12670","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2022-02-25T13:05:39Z","cross_cats_sorted":[],"title_canon_sha256":"6bb44df90d2e5f0684c05cd229391d938f615be2bfc8459a62d8301500b714ca","abstract_canon_sha256":"04d4f2c56fdc06123ddb4240bb3e12aa00b337642d2b606f6b76188b19eaa0e7"},"schema_version":"1.0"},"canonical_sha256":"8ad825cc8458d9c02d508c23ca41df1e05002b4868bb7fb9298b2b3607fdeb98","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T04:54:53.410231Z","signature_b64":"ZnvWx3hx6ZBkVtR8yR0Vjokqr+gZNdNxyBQyDE7vJVbCWrmrbPDQfwAadTXARFbz4g7OVq0u42JyOknm8PJtBw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"8ad825cc8458d9c02d508c23ca41df1e05002b4868bb7fb9298b2b3607fdeb98","last_reissued_at":"2026-07-05T04:54:53.409769Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T04:54:53.409769Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2202.12670","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":"2026-07-05T04:54:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"udlFbZwsq15yYi7T691JPkdPPuM3d7gyk2cjULrZ7Rr/ApCOGmiLDd0N0X0bb1MzqIyDTDvcTJy/I0tZEUWrAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T07:41:44.999182Z"},"content_sha256":"0b8752e4343dfb0af166ecd7f5d7f812f177fce4069fe2c8f7fb0aead0b23ada","schema_version":"1.0","event_id":"sha256:0b8752e4343dfb0af166ecd7f5d7f812f177fce4069fe2c8f7fb0aead0b23ada"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2022:RLMCLTEELDM4ALKQRQR4UQO7DY","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Hex-Mesh Generation and Processing: a Survey","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"cs.GR","authors_text":"Alla Sheffer, David Bommes, Franck Ledoux, Gianmarco Cherchi, Jean-Francois Remacle, Marcel Campen, Marco Livesu, Nico Pietroni, Riccardo Scateni, Xifeng Gao","submitted_at":"2022-02-25T13:05:39Z","abstract_excerpt":"In this article, we provide a detailed survey of techniques for hexahedral mesh generation. We cover the whole spectrum of alternative approaches to mesh generation, as well as post processing algorithms for connectivity editing and mesh optimization. For each technique, we highlight capabilities and limitations, also pointing out the associated unsolved challenges. Recent relaxed approaches, aiming to generate not pure-hex but hex-dominant meshes, are also discussed. The required background, pertaining to geometrical as well as combinatorial aspects, is introduced along the way."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.12670","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2202.12670/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T04:54:53Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Epw/h3xDltvNU5XJpZ5xv0TeAY2MokEvv0g4DomRa/ZYZrYkFua6DpV/1oxKULtUI8MOm5/HcipFd/0VtxSnCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T07:41:44.999682Z"},"content_sha256":"0fe06d04a413453a6c2f93e76c797af5821ddfc157a8f81892cb55f1175f5d84","schema_version":"1.0","event_id":"sha256:0fe06d04a413453a6c2f93e76c797af5821ddfc157a8f81892cb55f1175f5d84"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/RLMCLTEELDM4ALKQRQR4UQO7DY/bundle.json","state_url":"https://pith.science/pith/RLMCLTEELDM4ALKQRQR4UQO7DY/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/RLMCLTEELDM4ALKQRQR4UQO7DY/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":"2026-08-04T07:41:45Z","links":{"resolver":"https://pith.science/pith/RLMCLTEELDM4ALKQRQR4UQO7DY","bundle":"https://pith.science/pith/RLMCLTEELDM4ALKQRQR4UQO7DY/bundle.json","state":"https://pith.science/pith/RLMCLTEELDM4ALKQRQR4UQO7DY/state.json","well_known_bundle":"https://pith.science/.well-known/pith/RLMCLTEELDM4ALKQRQR4UQO7DY/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2022:RLMCLTEELDM4ALKQRQR4UQO7DY","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":"04d4f2c56fdc06123ddb4240bb3e12aa00b337642d2b606f6b76188b19eaa0e7","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2022-02-25T13:05:39Z","title_canon_sha256":"6bb44df90d2e5f0684c05cd229391d938f615be2bfc8459a62d8301500b714ca"},"schema_version":"1.0","source":{"id":"2202.12670","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2202.12670","created_at":"2026-07-05T04:54:53Z"},{"alias_kind":"arxiv_version","alias_value":"2202.12670v1","created_at":"2026-07-05T04:54:53Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2202.12670","created_at":"2026-07-05T04:54:53Z"},{"alias_kind":"pith_short_12","alias_value":"RLMCLTEELDM4","created_at":"2026-07-05T04:54:53Z"},{"alias_kind":"pith_short_16","alias_value":"RLMCLTEELDM4ALKQ","created_at":"2026-07-05T04:54:53Z"},{"alias_kind":"pith_short_8","alias_value":"RLMCLTEE","created_at":"2026-07-05T04:54:53Z"}],"graph_snapshots":[{"event_id":"sha256:0fe06d04a413453a6c2f93e76c797af5821ddfc157a8f81892cb55f1175f5d84","target":"graph","created_at":"2026-07-05T04:54:53Z","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/2202.12670/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this article, we provide a detailed survey of techniques for hexahedral mesh generation. We cover the whole spectrum of alternative approaches to mesh generation, as well as post processing algorithms for connectivity editing and mesh optimization. For each technique, we highlight capabilities and limitations, also pointing out the associated unsolved challenges. Recent relaxed approaches, aiming to generate not pure-hex but hex-dominant meshes, are also discussed. The required background, pertaining to geometrical as well as combinatorial aspects, is introduced along the way.","authors_text":"Alla Sheffer, David Bommes, Franck Ledoux, Gianmarco Cherchi, Jean-Francois Remacle, Marcel Campen, Marco Livesu, Nico Pietroni, Riccardo Scateni, Xifeng Gao","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2022-02-25T13:05:39Z","title":"Hex-Mesh Generation and Processing: a Survey"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2202.12670","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":"sha256:0b8752e4343dfb0af166ecd7f5d7f812f177fce4069fe2c8f7fb0aead0b23ada","target":"record","created_at":"2026-07-05T04:54:53Z","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":"04d4f2c56fdc06123ddb4240bb3e12aa00b337642d2b606f6b76188b19eaa0e7","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"cs.GR","submitted_at":"2022-02-25T13:05:39Z","title_canon_sha256":"6bb44df90d2e5f0684c05cd229391d938f615be2bfc8459a62d8301500b714ca"},"schema_version":"1.0","source":{"id":"2202.12670","kind":"arxiv","version":1}},"canonical_sha256":"8ad825cc8458d9c02d508c23ca41df1e05002b4868bb7fb9298b2b3607fdeb98","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"8ad825cc8458d9c02d508c23ca41df1e05002b4868bb7fb9298b2b3607fdeb98","first_computed_at":"2026-07-05T04:54:53.409769Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T04:54:53.409769Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"ZnvWx3hx6ZBkVtR8yR0Vjokqr+gZNdNxyBQyDE7vJVbCWrmrbPDQfwAadTXARFbz4g7OVq0u42JyOknm8PJtBw==","signature_status":"signed_v1","signed_at":"2026-07-05T04:54:53.410231Z","signed_message":"canonical_sha256_bytes"},"source_id":"2202.12670","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:0b8752e4343dfb0af166ecd7f5d7f812f177fce4069fe2c8f7fb0aead0b23ada","sha256:0fe06d04a413453a6c2f93e76c797af5821ddfc157a8f81892cb55f1175f5d84"],"state_sha256":"b213d3b2b1bd1069015a12ea986db40ad3ce047758102068fe79f40b34a42bf2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"viI5+Jgq/sd3PX24L+Z0s5Zu5bPXPC6rGt1+qhAUVSBK9aZW5dXMmNW/gqHZhP95Ro35MGXj8M1j5y4SCCiWAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T07:41:45.005233Z","bundle_sha256":"a6807092be407ed1cce6ea9720228e445d7fd90f51dd825f7b390a7fdbabb4cf"}}