2 papers
math.AC2025
The reflection invariant bispectrum: signal recovery in the dihedral model
Dan Edidin, Josh Katz
We study the problem of signal recovery in the dihedral multi-reference alignment (MRA) model, where a signal is observed under random actions of the dihedral group and corrupted b…
math.RT2025
Orbit recovery from invariants of low degree in representations of finite groups
Dan Edidin, Josh Katz
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…