Characterization of torus quotients
Let be a compact complex space of dimension . Let denote the second orbifold Chern class of , and let a finite group action be free in codimension one when its non-free locus has codimension at least two. Characterization of torus quotients. The following are equivalent:
- has klt singularities, , and there exists a Kähler class such that
- There exists a complex torus and a holomorphic action of a finite group on , free in codimension one, such that
In dimension , this characterization is well known. In dimension , it would follow from the stated three-dimensional result together with the relevant special case of the Abundance Conjecture; the general statement in dimensions remains open.
References
Primary source
Patrick Graf and Tim Kirschner, “Finite quotients of three-dimensional complex tori”, arXiv:1701.04749 (2017).
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