AUTOMORPHIC ORBITS IN FREE GROUPS: WORDS VERSUS SUBGROUPS

PEDRO V. SILVA, PASCAL WEIL
2010 International journal of algebra and computation  
We show that the following problems are decidable in a rank 2 free group F 2
doi:10.1142/s0218196710005790 fatcat:xuxvrsk4m5fongvoflg3dyj22a