3 papers
math.GR2024
Presentation of kernels of rational characters of right-angled Artin groups
Montserrat Casals-Ruiz, Ilya Kazachkov, Mallika Roy
In this note, we characterise when the kernel of a rational character of a right-anlged Artin group, also known as generalised Bestiva-Brady group, is finitely generated and finite…
math.GR2019
Fixed subgroups and computation of auto-fixed closures in free-abelian times free groups
Mallika Roy, Enric Ventura
The classical result by Dyer--Scott about fixed subgroups of finite order automorphisms of being free factors of is no longer true in . Within this more…
math.GR2019
Degrees of compression and inertia for free-abelian times free groups
Mallika Roy, Enric Ventura
We introduce the concepts of degree of inertia, , and degree of compression, , of a finitely generated subgroup of a given group . For the ca…