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15
Math.TechQA.Club
2026-05-07 17:15:44
232
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Quillen equivalence between sSet (Joyal's model structure) and sSetCat (Bergner's one)
Published on
07 May 2026 - 17:15
#category-theory
#proof-explanation
#simplicial-stuff
#higher-category-theory
#model-categories
9.7k
Views
What is an intuitive Geometrical explanation of a "sheaf?"
Published on
10 May 2026 - 9:00
#algebraic-geometry
#algebraic-topology
#manifolds
#sheaf-theory
#higher-category-theory
188
Views
$\infty$-categories definition disambiguation
Published on
29 Apr 2026 - 12:05
#algebraic-topology
#simplicial-stuff
#topos-theory
#higher-category-theory
57
Views
Applications of $\infty$-categories
Published on
10 May 2026 - 8:51
#reference-request
#category-theory
#big-list
#higher-category-theory
111
Views
Simplicial categories and simplicial objectcs. HTT Remark 1.1.4.2
Published on
29 Apr 2026 - 12:06
#category-theory
#simplicial-stuff
#higher-category-theory
88
Views
$n$-categories and associahedrons.
Published on
29 Apr 2026 - 12:18
#category-theory
#higher-category-theory
94
Views
Weak notion of equivalence in a category
Published on
29 Apr 2026 - 12:18
#category-theory
#higher-category-theory
808
Views
The $2$-category of monoids
Published on
07 May 2026 - 12:27
#abstract-algebra
#soft-question
#category-theory
#monoid
#higher-category-theory
426
Views
Higher homotopy groups in terms of the fundamental groupoid
Published on
05 May 2026 - 19:07
#category-theory
#homotopy-theory
#higher-category-theory
#groupoids
#higher-homotopy-groups
120
Views
Pseudolimits equivalent to limits
Published on
29 Apr 2026 - 12:18
#reference-request
#category-theory
#higher-category-theory
135
Views
Fibrant objects of marked simplicial sets
Published on
29 Apr 2026 - 12:18
#category-theory
#homotopy-theory
#simplicial-stuff
#higher-category-theory
92
Views
A terminological question regarding bicategories
Published on
29 Apr 2026 - 12:19
#category-theory
#terminology
#math-history
#higher-category-theory
154
Views
Definition: What is the under-category of an $\infty$-category?
Published on
29 Apr 2026 - 12:18
#category-theory
#simplicial-stuff
#higher-category-theory
71
Views
the Verlinde formula
Published on
29 Apr 2026 - 12:18
#category-theory
#abelian-categories
#monoidal-categories
#higher-category-theory
#model-categories
182
Views
A topological space as a $2$-($\infty$ ?) category
Published on
07 May 2026 - 18:35
#algebraic-topology
#soft-question
#category-theory
#homotopy-theory
#higher-category-theory
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