Minimal projective varieties satisfying Miyaoka's equality
Abstract In this paper, we establish a structure theorem for a minimal projective klt variety satisfying Miyaoka's equality . Specifically, we prove that the canonical divisor is semi‐ample and that the Kodaira dimension is equal to 0, 1, or 2. Furthermore, based on this abundance result, we show that a maximally quasi‐étale cover of is smooth, and we explicitly describe the structure of the Iitaka fibration. In addition, we prove an analogous result for projective klt varieties with numerically effective anti‐canonical divisor.
Authors
- Masataka Iwai (ORCID: https://orcid.org/0000-0002-0273-0360)
- Shin‐ichi Matsumura (ORCID: https://orcid.org/0000-0002-5928-527X)
- Niklas Müller (ORCID: https://orcid.org/0009-0005-7904-3525)
Institutions
- Osaka University of Economics (JP)
- Tohoku University (JP)
- University of Duisburg-Essen (DE)
- The University of Osaka (JP)
Publication Details
- Journal
- Proceedings of the London Mathematical Society
- Published
- 2025-12-01
- DOI
- https://doi.org/10.1112/plms.70104
- Primary Topic
- Algebraic Geometry and Number Theory
- Type
- article
- Field-Weighted Citation Impact
- 0.00