{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:VCNNJFMLAT3QE3F7R2BCQAYWUO","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":"6bbc3f67ba7b857287f08712675131e73ebe0abfd1bdc0ee258f1b27f950e19d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-08-29T18:10:19Z","title_canon_sha256":"f828499520d877429957c64167d6d21c94fbd6983830a40c392db6ed7c817114"},"schema_version":"1.0","source":{"id":"1808.09993","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1808.09993","created_at":"2026-05-18T00:04:39Z"},{"alias_kind":"arxiv_version","alias_value":"1808.09993v2","created_at":"2026-05-18T00:04:39Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.09993","created_at":"2026-05-18T00:04:39Z"},{"alias_kind":"pith_short_12","alias_value":"VCNNJFMLAT3Q","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_16","alias_value":"VCNNJFMLAT3QE3F7","created_at":"2026-05-18T12:32:59Z"},{"alias_kind":"pith_short_8","alias_value":"VCNNJFML","created_at":"2026-05-18T12:32:59Z"}],"graph_snapshots":[{"event_id":"sha256:3346a9c6eb5447c0cfb237a3cc2dc63a98ef200fe80d0bf8e808c765ff8714f6","target":"graph","created_at":"2026-05-18T00:04:39Z","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":"This thesis contributes with a number of topics to the subject of string compactifications. In the first half of the work, I discuss the Hodge plot of Calabi-Yau threefolds realised as hypersurfaces in toric varieties. The intricate structure of this plot is explained by the existence of certain webs of elliptic-K3 fibrations. Such manifolds arise from reflexive polytopes that can be cut into two parts along K3 slices. Any two half-polytopes over a given slice can be combined into a reflexive polytope. This fact, together with a remarkable relation on the additivity of Hodge numbers, give to t","authors_text":"Andrei Constantin","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-08-29T18:10:19Z","title":"Heterotic String Models on Smooth Calabi-Yau Threefolds"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09993","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":"sha256:87faa8dd6bd487222db48a73cd8c7608afc48c5f57fdcd969a0bf0f1ff241d34","target":"record","created_at":"2026-05-18T00:04:39Z","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":"6bbc3f67ba7b857287f08712675131e73ebe0abfd1bdc0ee258f1b27f950e19d","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-08-29T18:10:19Z","title_canon_sha256":"f828499520d877429957c64167d6d21c94fbd6983830a40c392db6ed7c817114"},"schema_version":"1.0","source":{"id":"1808.09993","kind":"arxiv","version":2}},"canonical_sha256":"a89ad4958b04f7026cbf8e82280316a3b1dafe79dd96a3df29f215a4b8466094","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a89ad4958b04f7026cbf8e82280316a3b1dafe79dd96a3df29f215a4b8466094","first_computed_at":"2026-05-18T00:04:39.129445Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:04:39.129445Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qhQrRDD9K5aN+atDKA+95RNbejbRX80oqu9J8IxbZ/cqkvPNTKoThgJjeSmVEoYwiVQiUv9Y5eVBFsmwVOMzDA==","signature_status":"signed_v1","signed_at":"2026-05-18T00:04:39.129941Z","signed_message":"canonical_sha256_bytes"},"source_id":"1808.09993","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:87faa8dd6bd487222db48a73cd8c7608afc48c5f57fdcd969a0bf0f1ff241d34","sha256:3346a9c6eb5447c0cfb237a3cc2dc63a98ef200fe80d0bf8e808c765ff8714f6"],"state_sha256":"77ea15d724ccdad65e36f7ebc5073142599691a474212df700da5371749d9597"}