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ThorbenK
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I'm a postdoc in mathematics from Germany and I'm mostly interested in topics related to manifolds.

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Top posts
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question
15
Recognizing free groups
Dec 3, 2023
question
12
Fundamental group of the complement of a codimension two submanifold
2 days ago
question
11
Can we embed a closed manifold into a homotopy equivalent CW complex?
Aug 18, 2021
question
10
Doubles of 2-handlebodies
Apr 8, 2023
question
9
Action of diffeomorphism group on non-vanishing vector fields
Dec 5, 2018
question
8
Representing the fundamental class of an aspherical manifold in the bar complex
Oct 14, 2021
question
8
Open book decompositions in dimension 4
Mar 6, 2023
answer
8
Parallelizability of 3-manifolds
Nov 26, 2019
question
7
Source request for $H^*(B\mathrm{TOP},\mathbb{Q}) \cong H^*(BO,\mathbb{Q})$
Apr 1, 2016
question
7
Different definitions of Stiefel-Whitney classes
Jan 4, 2019
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10
Is there a subject in mathematics like topological Algebra?
9
Representing a Multiple of the Fundamental Class of a Surface
9
Are there non-contractible space such that suspension $\sigma\colon \pi_k(X) \to \pi_{k+1}(\Sigma X)$ is an isomorphism for all $k$?
8
Hurewicz map factors through bordism homology
5
Source request for $H^*(B\mathrm{TOP},\mathbb{Q})\cong H^*(BO,\mathbb{Q})$