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15
Math.TechQA.Club
2014-05-13 04:01:39
100
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For which categories do injections induce surjections in cohomology?
Published on
13 May 2014 - 4:01
#abstract-algebra
#algebraic-geometry
#category-theory
#homology-cohomology
2.2k
Views
Do covariant functors preserve direct sums?
Published on
05 Apr 2026 - 9:00
#abstract-algebra
#category-theory
#modules
54
Views
Object set of a clonal category.
Published on
13 May 2014 - 12:25
#category-theory
#set-theory
1.5k
Views
example diagram of pullbacks and fiber products
Published on
26 Mar 2026 - 6:05
#category-theory
#products
#fiber-bundles
72
Views
How to call such a morphism?
Published on
14 May 2014 - 7:32
#category-theory
114
Views
(Almost) co-free objects?
Published on
29 Mar 2026 - 6:27
#category-theory
#order-theory
200
Views
Category of objects over $X$
Published on
14 May 2014 - 17:23
#category-theory
138
Views
Doubt about Yoneda Embedding as image of the hom functor
Published on
14 May 2014 - 19:28
#category-theory
597
Views
Are there any non-trivial finite elementary topoi?
Published on
28 Mar 2026 - 6:40
#category-theory
#topos-theory
803
Views
Left and Right minimal homomorphisms.
Published on
02 Apr 2026 - 14:45
#category-theory
#representation-theory
#homological-algebra
237
Views
On pushouts and mapping cylinders in exact categories
Published on
16 May 2014 - 17:05
#category-theory
214
Views
dense generators and left Kan extensions
Published on
28 Mar 2026 - 4:52
#category-theory
#topos-theory
447
Views
Is the arrow category of cartesian closed category cartesian closed?
Published on
17 May 2014 - 7:27
#category-theory
2k
Views
Exercise 2.2.1 in Charles A. Weibel's book An Introduction To Homological Algebra
Published on
02 Apr 2026 - 16:30
#category-theory
#homological-algebra
238
Views
When will a pointed category / arrow category be cartesian closed / a model category if the base category is cartesian closed / a model category?
Published on
17 May 2014 - 11:54
#reference-request
#category-theory
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