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15
Math.TechQA.Club
2026-03-29 02:12:27
93
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Why is this morphism in the saturation of a localizing set of this category?
Published on
29 Mar 2026 - 2:12
#category-theory
#proof-explanation
#localization
#triangulated-categories
#derived-categories
99
Views
Name convention for functor and natural transformation composition
Published on
31 Aug 2018 - 7:50
#category-theory
484
Views
Left and right adjoint of the presheaf evaluation $\widehat{C} \to \mathbf{Set}$, $F \mapsto F(c)$
Published on
26 Mar 2026 - 1:11
#category-theory
#sheaf-theory
609
Views
Is a poset an algebra?
Published on
26 Mar 2026 - 22:59
#category-theory
#universal-algebra
150
Views
Morita theorem: how to demonstrate ${}_{S}P_R$ is faithfully balanced and $P_R$ progenerator
Published on
28 Mar 2026 - 12:49
#category-theory
#modules
66
Views
Vertical and Horizontal compositions and endofunctors
Published on
31 Aug 2018 - 20:05
#category-theory
93
Views
Category of $K$-operator algebras equivalent to $K\text{-}\mathrm{vec}$?
Published on
31 Aug 2018 - 21:43
#linear-algebra
#vector-spaces
#category-theory
892
Views
Further examples of stalks
Published on
26 Mar 2026 - 1:09
#algebraic-geometry
#category-theory
#sheaf-theory
342
Views
Tom Dieck 4.6, Exercise 1, pg 96, Pushout and quotient maps
Published on
01 Sep 2018 - 9:36
#general-topology
#algebraic-topology
#category-theory
105
Views
"Category" of (pre)stacks over a fixed category/site
Published on
27 Mar 2026 - 22:23
#category-theory
#topos-theory
#topological-stacks
103
Views
Interpretation of the product axiom for the Giry Monad
Published on
25 Mar 2026 - 6:12
#category-theory
#monads
532
Views
Why having finite products and equalizers implies having terminal object?
Published on
02 Sep 2018 - 15:57
#category-theory
202
Views
DG cofibrant replacement functor
Published on
22 Mar 2026 - 11:17
#category-theory
#model-categories
#enriched-category-theory
181
Views
How to show a morphism $f^•: A^•\to B^•$ of complexes induce the morphism of cohomology objects $H^i(A^•)\to H^i(B^•)$?
Published on
03 Sep 2018 - 7:06
#algebraic-geometry
#category-theory
#homology-cohomology
#abelian-categories
178
Views
How can we understand a group-scheme action as a natural transformation
Published on
03 Sep 2018 - 7:35
#abstract-algebra
#algebraic-geometry
#category-theory
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