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15
Math.TechQA.Club
2026-03-25 06:03:29
227
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Is there a name for this type of poset?
Published on
25 Mar 2026 - 6:03
#elementary-set-theory
#category-theory
#induction
#terminology
#order-theory
809
Views
Does base change preserve fibre products?
Published on
25 Mar 2026 - 10:52
#abstract-algebra
#algebraic-geometry
#commutative-algebra
#category-theory
#schemes
232
Views
Factorization of functors
Published on
25 Mar 2026 - 7:17
#category-theory
#functors
127
Views
Universal object of forgetful functor
Published on
25 Mar 2026 - 17:48
#category-theory
#functors
137
Views
Universal object of forgetful functor Ring and Set
Published on
26 Mar 2018 - 5:55
#category-theory
328
Views
Why $f'$ is an isomorphism if the rightmost square is a pullback?
Published on
19 Mar 2026 - 21:12
#category-theory
#exact-sequence
#abelian-categories
#pullback
415
Views
Why the rightmost square is a pullback?
Published on
19 Mar 2026 - 21:17
#category-theory
#exact-sequence
#abelian-categories
#pullback
119
Views
Characterization of a contravariant representable functor
Published on
22 Mar 2026 - 17:50
#category-theory
#representable-functor
313
Views
Exact sequences in category theory
Published on
25 Mar 2026 - 7:58
#category-theory
#homological-algebra
#exact-sequence
3.5k
Views
Distinguished triangle induced by short exact sequence
Published on
17 Mar 2026 - 16:07
#category-theory
#homological-algebra
#derived-categories
66
Views
Etale cohomology given by Hom functor in derived category
Published on
26 Mar 2018 - 23:55
#algebraic-geometry
#category-theory
139
Views
Are there "distributive bicategories"?
Published on
25 Mar 2026 - 1:05
#category-theory
#modules
#abelian-categories
#monoidal-categories
#bicategories
282
Views
Grothendieck's 1955 paper: general theory of fibre spaces ...
Published on
27 Mar 2018 - 10:12
#reference-request
#category-theory
188
Views
Snake lemma for $R$-modules. Help with $\ker$ maps, not connecting hom.
Published on
19 Mar 2026 - 22:26
#category-theory
#modules
#homological-algebra
#diagram-chasing
188
Views
A general question of gluability of morphisms of sheaves
Published on
25 Mar 2026 - 7:45
#category-theory
#sheaf-theory
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