Mathematics > Representation Theory
[Submitted on 16 Feb 2025
]
Title: Orbit recovery from invariants of low degree in representations of finite groups
Title: 有限群表示中低次不变量的轨道恢复
Abstract: Motivated by applications to equivariant neural networks and cryo-electron microscopy we consider the problem of recovering the generic orbit in a representation of a finite group from invariants of low degree. The main result proved here is that invariants of degree at most three separate generic orbits in the regular representation of a finite group defined over any infinite field. This answers a question posed in a 2023 ACHA paper of Bandeira et. al. We also discuss this problem for subregular representations of the dihedral and symmetric groups.
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