Abstract
In this survey, based on joint work of the author and S. Boissière and A. Sarti, we will describe an isomorphism between the moduli space of smooth cubic threefolds, as described by Allcock, Carlson and Toledo, and the moduli space of fourfolds of K3[2]-type with a special non-symplectic automorphism of order three; then, I will show some consequences of this isomorphism concerning degenerations of non-symplectic automorphisms. Finally we will explore possible generalizations of the problem to higher dimensions and other moduli spaces of cubic threefolds.
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Acknowledgements
The author wants to express her gratitude to S. Boissière and A. Sarti for reading a draft of this survey and to the Max Planck Institute of Mathematics for providing a great working environment. The comments of the anonymous referee, which the author gratefully appreciated, have greatly helped to improve and clarify the exposition.
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Camere, C. (2020). Moduli Spaces of Cubic Threefolds and of Irreducible Holomorphic Symplectic Manifolds. In: Colombo, E., Fantechi, B., Frediani, P., Iacono, D., Pardini, R. (eds) Birational Geometry and Moduli Spaces. Springer INdAM Series, vol 39. Springer, Cham. https://doi.org/10.1007/978-3-030-37114-2_2
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