{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2018:VCNNJFMLAT3QE3F7R2BCQAYWUO","short_pith_number":"pith:VCNNJFML","schema_version":"1.0","canonical_sha256":"a89ad4958b04f7026cbf8e82280316a3b1dafe79dd96a3df29f215a4b8466094","source":{"kind":"arxiv","id":"1808.09993","version":2},"attestation_state":"computed","paper":{"title":"Heterotic String Models on Smooth Calabi-Yau Threefolds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Andrei Constantin","submitted_at":"2018-08-29T18:10:19Z","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"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1808.09993","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-th","submitted_at":"2018-08-29T18:10:19Z","cross_cats_sorted":[],"title_canon_sha256":"f828499520d877429957c64167d6d21c94fbd6983830a40c392db6ed7c817114","abstract_canon_sha256":"6bbc3f67ba7b857287f08712675131e73ebe0abfd1bdc0ee258f1b27f950e19d"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:04:39.129941Z","signature_b64":"qhQrRDD9K5aN+atDKA+95RNbejbRX80oqu9J8IxbZ/cqkvPNTKoThgJjeSmVEoYwiVQiUv9Y5eVBFsmwVOMzDA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a89ad4958b04f7026cbf8e82280316a3b1dafe79dd96a3df29f215a4b8466094","last_reissued_at":"2026-05-18T00:04:39.129445Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:04:39.129445Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Heterotic String Models on Smooth Calabi-Yau Threefolds","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-th","authors_text":"Andrei Constantin","submitted_at":"2018-08-29T18:10:19Z","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"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09993","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1808.09993","created_at":"2026-05-18T00:04:39.129526+00:00"},{"alias_kind":"arxiv_version","alias_value":"1808.09993v2","created_at":"2026-05-18T00:04:39.129526+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1808.09993","created_at":"2026-05-18T00:04:39.129526+00:00"},{"alias_kind":"pith_short_12","alias_value":"VCNNJFMLAT3Q","created_at":"2026-05-18T12:32:59.047623+00:00"},{"alias_kind":"pith_short_16","alias_value":"VCNNJFMLAT3QE3F7","created_at":"2026-05-18T12:32:59.047623+00:00"},{"alias_kind":"pith_short_8","alias_value":"VCNNJFML","created_at":"2026-05-18T12:32:59.047623+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/VCNNJFMLAT3QE3F7R2BCQAYWUO","json":"https://pith.science/pith/VCNNJFMLAT3QE3F7R2BCQAYWUO.json","graph_json":"https://pith.science/api/pith-number/VCNNJFMLAT3QE3F7R2BCQAYWUO/graph.json","events_json":"https://pith.science/api/pith-number/VCNNJFMLAT3QE3F7R2BCQAYWUO/events.json","paper":"https://pith.science/paper/VCNNJFML"},"agent_actions":{"view_html":"https://pith.science/pith/VCNNJFMLAT3QE3F7R2BCQAYWUO","download_json":"https://pith.science/pith/VCNNJFMLAT3QE3F7R2BCQAYWUO.json","view_paper":"https://pith.science/paper/VCNNJFML","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1808.09993&json=true","fetch_graph":"https://pith.science/api/pith-number/VCNNJFMLAT3QE3F7R2BCQAYWUO/graph.json","fetch_events":"https://pith.science/api/pith-number/VCNNJFMLAT3QE3F7R2BCQAYWUO/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/VCNNJFMLAT3QE3F7R2BCQAYWUO/action/timestamp_anchor","attest_storage":"https://pith.science/pith/VCNNJFMLAT3QE3F7R2BCQAYWUO/action/storage_attestation","attest_author":"https://pith.science/pith/VCNNJFMLAT3QE3F7R2BCQAYWUO/action/author_attestation","sign_citation":"https://pith.science/pith/VCNNJFMLAT3QE3F7R2BCQAYWUO/action/citation_signature","submit_replication":"https://pith.science/pith/VCNNJFMLAT3QE3F7R2BCQAYWUO/action/replication_record"}},"created_at":"2026-05-18T00:04:39.129526+00:00","updated_at":"2026-05-18T00:04:39.129526+00:00"}