Study of groups of measure-preserving homeomorphisms and volume-preserving diffeomorphisms of noncompact manifolds

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We studied topological properties of groups of diffeomorphisms and homeomorphisms of any on-compact manifold M. Under the compact-open C∞topology, we extended a parametrized version of Moser’s theorem for volume forms to the non-compact case. As for the Whitney C∞ topology, we howed That the pair of the group of diffeomorphisms of M and the subgroup of those with compact support is Locally homeomorphic to the pair of countable box product and small box product of l2.As for the uniform topology, we also obtained some deformation theorems for spaces of uniform embeddings and Groups of uniform homeomorphisms.