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Answers (39)

Votes Activity Newest

4	On Cauchy sequence
3	$M \subset \mathbb{R}^n$ $n-$manifold is an open set or the closure of an open set in $\mathbb{R}^n$
3	Example of “almost metric” topological space
3	Fundamental Group of $(\mathbb{Q},0)$
3	Verify if the following set is open or not

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Reputation (1,061)

+20	$f: B^2 \rightarrow B^2$ be a continuous map such that $f(x) = x$ for every $x \in S^1$, show $f$ is surjective
+45	$M \subset \mathbb{R}^n$ $n-$manifold is an open set or the closure of an open set in $\mathbb{R}^n$
+10	Limits in the localization of a category of fibrant objects
+10	Model categories: Any two solutions to a lifting problem are homotopic

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Questions (11)

Votes Activity Newest

2	Group Structure on Homotopy Classes of Homotopies
2	When does a homotopy exist?
2	Right Lifting Properties Against Relative Cell Complexes
2	Triviality of Vector bundles.
1	Is the inclusion of the wedge sum into the reduced cylinder a relative cell complex?

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Tags (66)

15 general-topology × 10	6 group-theory × 5
10 real-analysis × 9	6 measure-theory × 4
8 abstract-algebra × 6	5 linear-algebra × 6
8 differential-topology × 3	5 algebraic-topology × 4
7 metric-spaces × 2	4 lebesgue-measure × 3

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Bookmarks (4)

Votes Activity Newest Views Added

7	What vector bundles are tangent bundles of smooth manifolds?
6	Isomorphism of $S^1$.
2	Function that gives $\operatorname{Gl}(n,\mathbb{R})$ as a deformation retract of $\operatorname{Diff}(\mathbb{R}^n)$
1	Is there an $\infty$-category of spaces?

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Votes cast (62)

all time			by type			month		week
34	up		42	question		8		1
28	down		20	answer		8		1

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