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Marcos
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Quotient of a $F_n$ group which is $F_n$

It is known that quotients of finitely generated groups are finitely generated and that the quotient of a finitely presented group is finitely presented iff the normal subgroup is the normal closure of a finite subset of the group. Hence: $$G~\text{is }F_1\Rightarrow G/N~\text{is }F_1 \forall~N\trianglelefteq G$$ $$G~\text{is }F_2\Rightarrow G/N~\text{is }F_2 \forall~N\trianglelefteq G\text{ which are normally finitely generated}$$ My question is about the higher dimensional finiteness properties. Are there any similar statements about the quotient of an $F_n$ group being $F_n$?

Marcos
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  • 15