I have a HNN extension where is a semi-direct product of by and is cyclic.
can be written as free products of and amalgamating where is a free abelian group.
Can expressed as a semi-direct product of cyclic free group by ?
I have a HNN extension where is a semi-direct product of by and is cyclic.
can be written as free products of and amalgamating where is a free abelian group.
Can expressed as a semi-direct product of cyclic free group by ?