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15
Math.TechQA.Club
2014-06-08 00:33:10
296
Views
If $g$ and $fg$ are isomorphisms, then so is $f$.
Published on
08 Jun 2014 - 0:33
#category-theory
1.3k
Views
Left & right adjoints in the context of posets.
Published on
29 Mar 2026 - 13:27
#category-theory
#order-theory
665
Views
How do you construct the lifted topology of a groupoid cover?
Published on
24 Mar 2026 - 23:46
#algebraic-topology
#category-theory
#groupoids
358
Views
Left & right adjoints in the context of complete lattices.
Published on
29 Mar 2026 - 12:41
#category-theory
#order-theory
#alternative-proof
119
Views
Is there way to formalize the idea that a category can be "cocomplete from the inside"?
Published on
29 Mar 2026 - 3:12
#category-theory
#definition
#foundations
351
Views
Adjoint action of semi-direct product
Published on
25 Mar 2026 - 13:59
#category-theory
#lie-groups
#lie-algebras
#semidirect-product
117
Views
Set maps given by a polynomial & Yoneda Lemma
Published on
09 Jun 2014 - 22:38
#abstract-algebra
#commutative-algebra
#category-theory
182
Views
A question about the category Grp
Published on
10 Jun 2014 - 4:31
#category-theory
185
Views
A question regarding $Hom(X,X)$ (or $Mor(X,X)$)
Published on
10 Jun 2014 - 5:51
#category-theory
672
Views
Learning the topology needed for topos theory.
Published on
09 Apr 2026 - 7:41
#general-topology
#reference-request
#category-theory
#sheaf-theory
#topos-theory
240
Views
Defining a monoidal category without elements
Published on
28 Mar 2026 - 8:28
#category-theory
#monoidal-categories
#higher-category-theory
353
Views
Weil restriction - from abstract nonsense to a practical procedure
Published on
30 Mar 2026 - 8:31
#algebraic-geometry
#category-theory
#galois-theory
#schemes
93
Views
Motivation of Strong Monics
Published on
09 Apr 2026 - 3:52
#category-theory
#topos-theory
212
Views
Similarity of Infinite Direct Sums Vs. Infinite Direct Products Across Categories
Published on
11 Jun 2014 - 3:31
#abstract-algebra
#elementary-set-theory
#category-theory
185
Views
A question about $A\times B\times C$ and $(A\times B)\times C$.
Published on
11 Jun 2014 - 15:36
#category-theory
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