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Tyrone
  • Member for 9 years, 2 months
  • Last seen this week
  • Beijing, China
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20
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Completely black with no steps back.

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158
Score
35
Posts
74
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Top posts
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All Questions Answers
Score Newest
question
29
The homotopy category is not complete nor cocomplete
May 20, 2016
question
28
Why study the p-completions of a space?
Sep 13, 2015
answer
24
Is the Alexander horned sphere a cofibration?
Oct 15, 2020
question
21
Maps out of Eilenberg-Mac Lane Spaces
Dec 12, 2016
answer
18
Action of the degree 2 map on $\pi_8(S^4)$
Oct 24, 2016
answer
16
Are all homotopy equivalences realized by fibrations over [0,1]?
Sep 4
question
14
How stable is the top cell of a Lie group?
Sep 10, 2015
answer
11
Does the category of locally compact Hausdorff spaces with proper maps have products?
Mar 8
answer
11
Finite domination and compact ENRs
Mar 27, 2022
answer
11
Compact-open topology and Delta-generated spaces
Jan 8, 2021
Top network posts
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21
Subgroups of $\text{Spin}(7)$.
19
Why is $\pi_7(\mathbb S^4)=\mathbb Z \oplus \mathbb Z_{12}$?
16
Principal Bundles, Chern Classes, and Abelian Instantons
12
Interpretation of Borel equivariant cohomology.
12
Construction of $\mathbb{CP}^2$ from $S^2\times S^2$

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