Abstract

The mapping torus of an endomorphism ' of a group G is the HNNextensionG⁄G with bonding maps the identity and '. We show that a mapping torus of an injective free group endomorphism has the property that its flnitely generated subgroups are flnitely presented and, moreover, these subgroups are of flnite type.

Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call