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Ali Taghavi
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Some counter examples in group theory

In this question, which we flag it as a community wiki quetion, we search for a big list of groups $G$ which can not be isomorphic to any one of the following structures: That is, a group $G$ which is not iomorphic to an structure mentioned in $i)$ for ome $i \in \{1,2,\ldots,6 \}$

1)The homemorphism group of a topological space $X$

2)The automorphism group of a (not necearilly finite dimensional) Lie algebra

3)The automorphism group of a coalgebra

4)(assuming $G$ is a Lie group) The isometry group of a Riemannian manifold

5)The automorphism group of another group

6)The automorphism group of a ring

Ali Taghavi
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