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Fernando

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Questions (14)

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12	is there any fibration $\mathbb{R}^n\to \mathbb{S}^n$?
9	2-category theory
8	A category with weak equivalences which is not a model category
5	Homotopy excision and homotopy pushout
4	Kan extension pseudonatural transformations

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Answers (4)

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3	Giving $Top(X,Y)$ an appropriate topology
2	Kan extension pseudonatural transformations
1	The family of morphisms f such that Qf=identity for some functor Q
1	Is a map a homotopy equivalence if its suspension is so?

Tags (14)

6 ct.category-theory × 12	2 2-categories × 5
4 at.algebraic-topology × 5	1 homotopy-theory × 7
3 gn.general-topology	0 higher-category-theory × 6
3 computer-science	0 model-categories × 4
3 lattices	0 fibration

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	Mathematics	870 rep	5 silver badges15 bronze badges
	MathOverflow	714 rep	3 silver badges14 bronze badges
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Votes cast (217)

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192	up		62	question
25	down		155	answer

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