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New posts in homological-algebra
Why isn't $\mathbb{C}[x,y,z]/(xz-y)$ a flat $\mathbb{C}[x,y]$-module
algebraic-geometry
commutative-algebra
modules
homological-algebra
When is $M \otimes_A -$ representable?
abstract-algebra
homological-algebra
Conditions for null-homotopic chain map in a specific example
abstract-algebra
homology-cohomology
homological-algebra
Long exact sequence in cohomology associated to a short exact sequence of *functors*
homological-algebra
derived-functors
Finding $\text{Ext}_R^n(M,R)$ and $\text{Ext}_R^n(M,N)$ for a particular case
commutative-algebra
homology-cohomology
homological-algebra
When is the derived category abelian?
category-theory
homological-algebra
abelian-categories
triangulated-categories
Surprising applications of cohomology
soft-question
homological-algebra
big-list
homology-cohomology
applications
Definition of an induced homotopy in Hilton-Stammbach's book A Course in homological algebra
homological-algebra
Applying Freyd-Mitchell's embedding theorem on large categories
category-theory
homological-algebra
How did we know to invent homological algebra?
algebraic-topology
math-history
homological-algebra
Good introductory books on homological algebra
abstract-algebra
reference-request
homological-algebra
big-list
learning
Can we think of a chain homotopy as a homotopy?
abstract-algebra
algebraic-topology
intuition
homological-algebra
A question about Mayer-Vietoris sequence [duplicate]
algebraic-topology
homology-cohomology
homological-algebra
mayer-vietoris-sequence
Why is $\operatorname{Tor}(\mathbb{Z}_m,\mathbb{Z}_n) \cong \mathbb{Z}_{\operatorname{gcd}(m,n)}$? [duplicate]
homological-algebra
A Geometric Description of Injective Modules
algebraic-geometry
commutative-algebra
homological-algebra
How to define Homology Functor in an arbitrary Abelian Category?
category-theory
homological-algebra
homology-cohomology
abelian-categories
Can it happen that the image of a functor is not a category?
category-theory
homological-algebra
Hom is a left-exact functor
abstract-algebra
category-theory
modules
homological-algebra
exact-sequence
Proving the snake lemma without a diagram chase
commutative-algebra
category-theory
homological-algebra
abelian-categories
Cokernels - how to explain or get a good intuition of what they are or might be
abstract-algebra
category-theory
big-list
homological-algebra
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