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15
Math.TechQA.Club
2026-04-12 18:55:22
71
Views
Verifying that some maps are functors
Published on
12 Apr 2026 - 18:55
#solution-verification
#category-theory
#functors
196
Views
Existence of adjoints of functor $F: POSET \to Set$
Published on
13 Apr 2026 - 20:04
#category-theory
#adjoint-functors
138
Views
Colimit in the category of Sets.
Published on
16 Apr 2026 - 18:43
#elementary-set-theory
#category-theory
#limits-colimits
53
Views
What is the meaning of the category theoretic symbol $\nrightarrow$
Published on
05 May 2026 - 15:47
#category-theory
#notation
65
Views
Question about an exercises from the text: Sets for Mathematics in regards to Coseparator and discriminate generalized elements.
Published on
12 Apr 2026 - 22:38
#category-theory
33
Views
Confusing instruction for a proof for showing that a diagram has a limit from Arbib and Manes' text
Published on
13 Apr 2026 - 10:51
#category-theory
#proof-explanation
99
Views
Universal Maps and Adjunctions
Published on
13 Apr 2026 - 4:11
#category-theory
118
Views
Question about an exercise on showing why the colimit for Poset as a category can not be constructed in Arbib and Manes text
Published on
14 Apr 2026 - 12:20
#category-theory
#limits-colimits
128
Views
Direct sum - exists?
Published on
13 Apr 2026 - 3:54
#category-theory
93
Views
Realization of a limit as a set of natural transformations
Published on
29 Mar 2026 - 8:44
#category-theory
#higher-category-theory
52
Views
Uniqueness (up to natural isomorphism) of equivalences
Published on
17 Apr 2026 - 2:08
#category-theory
72
Views
Showing that a morphism is an equivalence relation
Published on
11 Apr 2026 - 5:26
#category-theory
#equivalence-relations
#morphism
51
Views
Dense, codense, finite subcategory
Published on
16 Apr 2026 - 6:30
#category-theory
#limits-colimits
36
Views
Category of small sets
Published on
10 May 2026 - 15:50
#category-theory
#enriched-category-theory
154
Views
Cogenerator in category of groups/monoids/rings
Published on
16 Apr 2026 - 0:43
#category-theory
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