Triple

T22328811
Position Surface form Disambiguated ID Type / Status
Subject Hard Lefschetz theorem E551969 entity
Predicate isRelatedTo P37 FINISHED
Object Lefschetz (1,1)-theorem
The Lefschetz (1,1)-theorem is a fundamental result in complex algebraic geometry stating that on a smooth projective complex variety, integral cohomology classes of type (1,1) are precisely the first Chern classes of holomorphic line bundles.
E1533545 NE FINISHED

How this triple was built (4 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: Lefschetz (1,1)-theorem | Statement: [Hard Lefschetz theorem, isRelatedTo, Lefschetz (1,1)-theorem]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Lefschetz (1,1)-theorem
Context triple: [Hard Lefschetz theorem, isRelatedTo, Lefschetz (1,1)-theorem]
  • A. Lefschetz hyperplane theorem
    The Lefschetz hyperplane theorem is a fundamental result in algebraic geometry and topology that relates the topology (especially homology and homotopy groups) of a smooth projective variety to that of its hyperplane sections.
  • B. Grothendieck–Lefschetz theorem
    The Grothendieck–Lefschetz theorem is a fundamental result in algebraic geometry that extends Lefschetz-type hyperplane theorems to a broad scheme-theoretic and cohomological setting, relating the geometry and Picard groups of a variety to those of its hyperplane sections.
  • C. Hard Lefschetz theorem
    The Hard Lefschetz theorem is a fundamental result in algebraic geometry and Hodge theory that relates the cohomology groups of a compact Kähler manifold via repeated cup product with the Kähler class, yielding powerful symmetry and duality properties.
  • D. Lefschetz
    Lefschetz is a surname most notably associated with Solomon Lefschetz, a pioneering mathematician in algebraic topology and geometry.
  • E. Kodaira vanishing theorem
    The Kodaira vanishing theorem is a fundamental result in algebraic geometry that gives conditions under which certain cohomology groups of ample line bundles on smooth projective varieties vanish, with deep implications for the classification of complex manifolds.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Lefschetz (1,1)-theorem
Triple: [Hard Lefschetz theorem, isRelatedTo, Lefschetz (1,1)-theorem]
Generated description
The Lefschetz (1,1)-theorem is a fundamental result in complex algebraic geometry stating that on a smooth projective complex variety, integral cohomology classes of type (1,1) are precisely the first Chern classes of holomorphic line bundles.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Lefschetz (1,1)-theorem
Target entity description: The Lefschetz (1,1)-theorem is a fundamental result in complex algebraic geometry stating that on a smooth projective complex variety, integral cohomology classes of type (1,1) are precisely the first Chern classes of holomorphic line bundles.
  • A. Lefschetz hyperplane theorem
    The Lefschetz hyperplane theorem is a fundamental result in algebraic geometry and topology that relates the topology (especially homology and homotopy groups) of a smooth projective variety to that of its hyperplane sections.
  • B. Grothendieck–Lefschetz theorem
    The Grothendieck–Lefschetz theorem is a fundamental result in algebraic geometry that extends Lefschetz-type hyperplane theorems to a broad scheme-theoretic and cohomological setting, relating the geometry and Picard groups of a variety to those of its hyperplane sections.
  • C. Hard Lefschetz theorem
    The Hard Lefschetz theorem is a fundamental result in algebraic geometry and Hodge theory that relates the cohomology groups of a compact Kähler manifold via repeated cup product with the Kähler class, yielding powerful symmetry and duality properties.
  • D. Lefschetz
    Lefschetz is a surname most notably associated with Solomon Lefschetz, a pioneering mathematician in algebraic topology and geometry.
  • E. Kodaira vanishing theorem
    The Kodaira vanishing theorem is a fundamental result in algebraic geometry that gives conditions under which certain cohomology groups of ample line bundles on smooth projective varieties vanish, with deep implications for the classification of complex manifolds.
  • F. None of above. chosen

Provenance (5 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69e11e482f788190b78d1588fc26d606 completed April 16, 2026, 5:37 p.m.
NER Named-entity recognition batch_69f1576ab52c819087563cd778d6bc5e completed April 29, 2026, 12:57 a.m.
NED1 Entity disambiguation (via context triple) batch_6a0ae9a9acc8819095d10ebba06dadfc completed May 18, 2026, 10:27 a.m.
NEDg Description generation batch_6a0aeaac3c68819086360eb760bb63b3 completed May 18, 2026, 10:32 a.m.
NED2 Entity disambiguation (via description) batch_6a0aeb110f148190b50765853d6540ef completed May 18, 2026, 10:33 a.m.
Created at: April 16, 2026, 8:43 p.m.