Maximal subgroups of multi-edge spinal groups
Maximal subgroups of multi-edge spinal groups
A multi-edge spinal group is a subgroup of the automorphism group of a regular p -adic rooted tree, generated by one rooted automorphism and a finite number of directed automorphisms sharing a common directing path. We prove that torsion multi-edge spinal groups do not have maximal subgroups of infinite index. …