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Results tagged with differential-topology
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user 43645
The study of differentiable manifolds and differentiable maps. One fundamental problem is that of classifying manifolds up to diffeomorphism. Differential topology is what Poincaré understood as topology or “analysis situs”.
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A relative version of Ehresmann's theorem
I think that one can prove the relative version of Ehresmann's lemma (and also versions for manifolds with corners, which is my interest) without any technology as follows:
Let us first recall the fo …
- 466
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1
answer
491
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Extending diffeomorphisms of some faces of the standard $n$- simplex to a diffeomorphism of ...
I would be grateful if you could help me with the following question:
Let $n\in \mathbb{N}$ and $k\in \{1, \ldots, n+1\}$. For every $i=1, ..., k$ let $f_i : \partial_i \Delta^n \rightarrow \partial_ …
- 44.4k