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15
Math.TechQA.Club
2026-03-19 19:51:37
226
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Quillen equivalence between sSet (Joyal's model structure) and sSetCat (Bergner's one)
Published on
19 Mar 2026 - 19:51
#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
22 Mar 2026 - 14:13
#algebraic-geometry
#algebraic-topology
#manifolds
#sheaf-theory
#higher-category-theory
183
Views
$\infty$-categories definition disambiguation
Published on
20 Mar 2026 - 5:21
#algebraic-topology
#simplicial-stuff
#topos-theory
#higher-category-theory
48
Views
Applications of $\infty$-categories
Published on
22 Mar 2026 - 6:48
#reference-request
#category-theory
#big-list
#higher-category-theory
105
Views
Simplicial categories and simplicial objectcs. HTT Remark 1.1.4.2
Published on
20 Mar 2026 - 6:34
#category-theory
#simplicial-stuff
#higher-category-theory
82
Views
$n$-categories and associahedrons.
Published on
20 Mar 2026 - 8:08
#category-theory
#higher-category-theory
90
Views
Weak notion of equivalence in a category
Published on
22 Mar 2026 - 6:32
#category-theory
#higher-category-theory
802
Views
The $2$-category of monoids
Published on
19 Mar 2026 - 16:55
#abstract-algebra
#soft-question
#category-theory
#monoid
#higher-category-theory
410
Views
Higher homotopy groups in terms of the fundamental groupoid
Published on
20 Mar 2026 - 19:57
#category-theory
#homotopy-theory
#higher-category-theory
#groupoids
#higher-homotopy-groups
115
Views
Pseudolimits equivalent to limits
Published on
19 Mar 2026 - 20:55
#reference-request
#category-theory
#higher-category-theory
126
Views
Fibrant objects of marked simplicial sets
Published on
20 Mar 2026 - 7:12
#category-theory
#homotopy-theory
#simplicial-stuff
#higher-category-theory
87
Views
A terminological question regarding bicategories
Published on
25 Mar 2026 - 8:52
#category-theory
#terminology
#math-history
#higher-category-theory
151
Views
Definition: What is the under-category of an $\infty$-category?
Published on
25 Mar 2026 - 17:19
#category-theory
#simplicial-stuff
#higher-category-theory
66
Views
the Verlinde formula
Published on
25 Mar 2026 - 17:26
#category-theory
#abelian-categories
#monoidal-categories
#higher-category-theory
#model-categories
176
Views
A topological space as a $2$-($\infty$ ?) category
Published on
25 Mar 2026 - 17:18
#algebraic-topology
#soft-question
#category-theory
#homotopy-theory
#higher-category-theory
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