Tuesday, 29 March 2016

at.algebraic topology - Does there exists a (possibly homological) characterization of the Jordan curve property in all dimensions?

More precisely, let $M$ be a subspace $mathbb R^n$ with the following properties:



  • $M$ is a topological manifold of dimension $n-1$.

  • M is compact.

Does there exist a homological characterization of when the following happens:



  • $mathbb R^n backslash M$ has two components, the bounded one being "inside" and the other one "outside". Both are $n$-dimensional manifolds.

If the above is not possible, is there a different formulation of the question which would allow a nice characterization?



The motivation of this question is of course the realization that the solution for $n = 3$ seems to be that $M$ is an oriented surface.

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