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15
Math.TechQA.Club
2026-04-28 15:48:37
86
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Which is an example of a monoidal category which cannot be braided?
Published on
28 Apr 2026 - 15:48
#category-theory
#examples-counterexamples
#monoidal-categories
#braidings
363
Views
Definition of a variety in category theory
Published on
11 Apr 2026 - 21:10
#algebraic-geometry
#category-theory
79
Views
Relationship structure homomorphisms vs. category morphisms
Published on
16 Apr 2026 - 0:57
#logic
#category-theory
365
Views
Colimit of a constant functor
Published on
26 Mar 2026 - 4:51
#category-theory
#limits-colimits
71
Views
Adjoint functor theorem for ordered sets: an example
Published on
14 Apr 2026 - 6:23
#logic
#category-theory
#proof-explanation
88
Views
Confusion about the underlying function of a Functor.
Published on
26 Mar 2026 - 4:50
#functions
#category-theory
#functors
195
Views
How can I prove that $[\sum X, Y] \cong [X, \Omega Y]$?
Published on
29 Apr 2026 - 19:16
#algebraic-topology
#category-theory
#homology-cohomology
#homotopy-theory
623
Views
Category with Products and Equalizers also has Limits (Schapira)
Published on
15 Apr 2026 - 11:25
#category-theory
#limits-colimits
120
Views
Subobject classifiers in categories of smooth spaces
Published on
20 Apr 2026 - 7:17
#category-theory
#topos-theory
#synthetic-differential-geometry
72
Views
"Objects of a category $\mathcal{C}$ constitute a set in some universe"
Published on
14 Apr 2026 - 13:17
#category-theory
#set-theory
98
Views
Complete category reduces to preordered class
Published on
16 Apr 2026 - 14:43
#category-theory
42
Views
Is there discrete Morse theory on acyclic categories?
Published on
13 Apr 2026 - 12:17
#combinatorics
#algebraic-topology
#category-theory
231
Views
What is a clear, elegant proof that $\text{Hom}(\cdot, Y)$ is a right-exact functor in a category of modules?
Published on
25 Apr 2026 - 14:31
#category-theory
#modules
#homological-algebra
#diagram-chasing
#hom-functor
54
Views
Proving an equivalence about a subclass of morphisms in an additive category.
Published on
17 Apr 2026 - 14:39
#abstract-algebra
#category-theory
#homological-algebra
146
Views
What is the categorical operad whose algebras are the (based) symmetric monoidal categories?
Published on
28 Mar 2026 - 22:28
#category-theory
#higher-category-theory
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