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15
Math.TechQA.Club
2018-08-06 02:59:19
104
Views
Do products exist in CRing
Published on
06 Aug 2018 - 2:59
#ring-theory
#category-theory
196
Views
Alternative definition of "sheaf"
Published on
25 Mar 2026 - 22:09
#general-topology
#category-theory
#definition
#order-theory
#sheaf-theory
50
Views
Abelian $\operatorname{Hom}(-,X)$ in $\mathcal{Alg}_{R/A}$
Published on
28 Mar 2026 - 4:25
#abstract-algebra
#category-theory
#modules
126
Views
Characterize Powersets among CPOs
Published on
25 Mar 2026 - 5:58
#category-theory
#order-theory
#boolean-algebra
#lattice-orders
64
Views
Reference Request: Bunge's proof that cocomplete regular atomic categories are presheaves
Published on
08 Aug 2018 - 5:54
#reference-request
#category-theory
578
Views
Representation theorem for Complete Atomic Heyting Algebras
Published on
27 Mar 2026 - 19:17
#logic
#category-theory
#order-theory
#heyting-algebra
108
Views
Definition of Local Functor
Published on
25 Mar 2026 - 3:22
#category-theory
#definition
#functors
125
Views
Inverse limits over coinitial sets.
Published on
25 Mar 2026 - 3:17
#abstract-algebra
#category-theory
#limits-colimits
2k
Views
Why is it that homotopy is better described by weak equivalences than by homotopies?
Published on
25 Mar 2026 - 18:50
#algebraic-topology
#category-theory
#homotopy-theory
#higher-category-theory
69
Views
Natural isomorphisms between structures imply elementary equivalence. Do natural isomorphisms between functors imply anything like this?
Published on
25 Mar 2026 - 3:20
#category-theory
#functors
1.4k
Views
Describe fibered product in Top
Published on
09 Aug 2018 - 3:11
#general-topology
#category-theory
81
Views
Morphism in the category of diagrams
Published on
09 Aug 2018 - 13:31
#category-theory
47
Views
Are categories just multi-digraphs with extra restrictions?
Published on
09 Aug 2018 - 16:26
#category-theory
338
Views
Riehl's Category Theory in Context - Exercise 2.1.iv.
Published on
09 Aug 2018 - 22:17
#category-theory
418
Views
Non-trivial natural endomorphisms on $\operatorname{Top}$
Published on
10 Aug 2018 - 11:45
#proof-verification
#category-theory
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