English

Moishezon manifolds with no nef and big classes

Algebraic Geometry 2025-02-26 v1 Complex Variables

Abstract

We show that a compact complex manifold XX has no non-trivial nef (1,1)(1,1)-classes if there is a non-isomorphic bimeromorphic map f ⁣:XYf\colon X\dashrightarrow Y isomorphic in codimension 11 to a compact K\"ahler manifold YY with h1,1=1h^{1,1}=1. In particular, there exist infinitely many isomorphic classes of smooth compact Moishezon threefolds with no nef and big (1,1)(1,1)-classes. This contradicts a recent paper (Strongly Jordan property and free actions of non-abelian free groups, Proc. Edinb. Math. Soc., (2022): 1--11).

Keywords

Cite

@article{arxiv.2208.12013,
  title  = {Moishezon manifolds with no nef and big classes},
  author = {Jia Jia and Sheng Meng},
  journal= {arXiv preprint arXiv:2208.12013},
  year   = {2025}
}

Comments

6 pages, comments are welcome!

R2 v1 2026-06-25T01:58:15.744Z