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Simon Henry
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question
101
What is the mistake in the proof of the Homotopy hypothesis by Kapranov and Voevodsky?
Mar 25, 2016
answer
71
Why did Voevodsky consider categories "posets in the next dimension", and groupoids the correct generalisation of sets?
Aug 31, 2018
answer
54
Constructive algebraic geometry
Nov 15, 2017
question
47
The two ways Feynman diagrams appear in mathematics
Dec 3, 2017
answer
39
What is the mistake in the proof of the Homotopy hypothesis by Kapranov and Voevodsky?
Nov 29, 2017
answer
37
Could groups be used instead of sets as a foundation of mathematics?
Feb 12, 2020
answer
36
Current status of Grothendieck's homotopy hypothesis and Whitehead's algebraic homotopy programme
Apr 9, 2017
question
33
Proof assistant for working in weaker foundations?
Mar 7, 2018
answer
28
Finding a closed form for $\sum_{k=1}^{\infty}\frac{1}{(2k)^5-(2k)^3}$
May 26, 2016
answer
28
Why is the bicategory viewpoint useful?
Sep 9, 2023
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16
Does "equalisers always closed" imply $T_2$?
8
Convex hull of an open set...