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Classification of Automorphism Groups of Smooth Cubic Threefolds and Fourfolds
Abstract
We classify the automorphism groups of smooth cubic threefolds and fourfolds. We also show that there are $156$ (respectively, $40$) connected families of smooth cubic fourfolds (respectively, threefolds) with specified automorphism group action. For each family, the group action and defining equations are also given. The classification combines both representation theory (based on GAP) and lattice theory (based on SageMath).
Related
- Remarks on Lattice Actions Corresponding to Automorphism Groups of Smooth Cubic Fourfolds
- Automorphism Groups of Smooth Cubic Fourfolds through Lattice Theory
- Non-symplectic Indices of Automorphism Groups of Smooth Cubic Fourfolds
- Automorphism groups of smooth quartic threefolds
- A natural Chow lemma for smooth threefolds and fourfolds
BibTeX
@misc{fu2026classification,
title = {{Classification of Automorphism Groups of Smooth Cubic Threefolds and Fourfolds}},
author = {Jie Fu and Shihao Wang and Zhiwei Zheng},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.20403},
eprint = {2609.20403},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.20403},
}
RIS
TY - UNPB
TI - Classification of Automorphism Groups of Smooth Cubic Threefolds and Fourfolds
AU - Jie Fu
AU - Shihao Wang
AU - Zhiwei Zheng
PY - 2026
DA - 2026/09/17
PB - arXiv
DO - 10.48550/arxiv.2609.20403
UR - https://arxiv.org/abs/2609.20403
AB - We classify the automorphism groups of smooth cubic threefolds and fourfolds. We also show that there are $156$ (respectively, $40$) connected families of smooth cubic fourfolds (respectively, threefolds) with specified automorphism group action. For each family, the group action and defining equations are also given. The classification combines both representation theory (based on GAP) and lattice theory (based on SageMath).
ER -