Generalization of Kodaira’s Embedding Theorem for Compact Kähler Manifolds with Semi-Positive Chern Class

Kodaira embedding theorem states that a compact complex manifold can only be embedded into a complex projective space PN for some N if it admits a positive line bundle. Based on Chow’s theorem, projective algebraic manifolds are algebraic. The purpose of this study is to generalize Kodaira’s known theorem. We show that if X is a compact Kähler manifold of complex dimension n and its first Chern class is semi-positive and of rank n−1 at one point of X, then X can be embedded into PN for some integer N. Furthermore, we prove that this embedding is unique up to biholomorphism. We also show that X admits a Kähler metric whose Ricci curvature is bounded from below.

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Publication Details

Journal
International Journal of Analysis and Applications
Published
2025-03-17
DOI
https://doi.org/10.28924/2291-8639-23-2025-72
Primary Topic
Geometry and complex manifolds
Type
article
Field-Weighted Citation Impact
0.00
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article

Generalization of Kodaira’s Embedding Theorem for Compact Kähler Manifolds with Semi-Positive Chern Class

Abdullah Alahmari„, Sayed Saber
International Journal of Analysis and Applications
Geometry and complex manifolds
article

Generalization of Kodaira’s Embedding Theorem for Compact Kähler Manifolds with Semi-Positive Chern Class

Abdullah Alahmari„, Sayed Saber
article en

Abstract

Kodaira embedding theorem states that a compact complex manifold can only be embedded into a complex projective space PN for some N if it admits a positive line bundle. Based on Chow’s theorem, projective algebraic manifolds are algebraic. The purpose of this study is to generalize Kodaira’s known theorem. We show that if X is a compact Kähler manifold of complex dimension n and its first Chern class is semi-positive and of rank n−1 at one point of X, then X can be embedded into PN for some integer N. Furthermore, we prove that this embedding is unique up to biholomorphism. We also show that X admits a Kähler metric whose Ricci curvature is bounded from below.

International Journal of Analysis and ApplicationsVol. 23
Openalex Percentile: Top 90%
Geometry and complex manifolds
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