Fixed points and stable images of endomorphisms for the free group of rank two
- Resource Type
- Working Paper
- Authors
- Ciobanu, Laura; Logan, Alan D.
- Source
- Subject
- Mathematics - Group Theory
20F65, 20F10, 20E05
- Language
We give an algorithm which computes the fixed subgroup and the stable image for any endomorphism of the free group of rank two $F_2$, answering for $F_2$ a question posed by Stallings in 1984 and a question of Ventura.
Comment: 34 pages