3 papers
math.GR2025
The product formula for Reidemeister numbers on nilpotent groups
Pieter Senden
We study the product formula for Reidemeister numbers on finitely generated torsion-free nilpotent groups in two ways. On the one hand, we generalise the product formula to central…
math.GR2025
Reidemeister spectra of free nilpotent groups and plethysms of Schur functions
Pieter Senden
We establish a strong link between two open problems: determining the Reidemeister spectrum of free nilpotent groups and determining the coefficients in the Schur expansion of plet…
math.GR2022
The Reidemeister spectrum of finite abelian groups
Pieter Senden
For a finite abelian group , the Reidemeister number of an endomorphism equals the size of , the set of fixed points of . Consequently, the Reidemeister…