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Aug
22
comment Why Study Homological Algebra?
@user26857 Well, first of all, Hochschild homology and cohomology are just Tor and Ext! You might be right, though... Maybe they are a bit advanced. But I think if one have read Atiyah-Macdonald, one should probably know what Tor and Ext are (if I remember correctly, they talk about it a bit).
Aug
22
revised Why Study Homological Algebra?
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Aug
22
answered Why Study Homological Algebra?
Aug
15
awarded  abstract-algebra
Aug
14
answered Is exterior algebra an example of an algebra over a field?
Aug
14
revised Induced morphisms into pullback
Removed tags "abelian categories" and "monoidal categories" since the question is not about them in any way.
Jul
24
awarded  Popular Question
Jul
3
awarded  Yearling
Jun
6
revised Prove $I$ is non-principal ideal of $\mathbb{Z}[x]$?
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Jun
6
answered Prove $I$ is non-principal ideal of $\mathbb{Z}[x]$?
Jun
6
awarded  Civic Duty
Jun
2
reviewed Close permutation test - how big shall $n$
Jun
2
reviewed Close Probability Distribution Function $W=X+Y$
Jun
2
reviewed Close solve recurrence relation: comparisons to construct binary search tree with maple
May
31
reviewed Close Why a system becomes incomplete once it's capable of doing arithmetic?
May
31
reviewed Leave Open Undergraduate in Biomedical Engineering wants to pursue a Graduate Math degree.
May
31
reviewed Close Is there any inverse-commutator for matrices
May
31
reviewed Leave Open Radius of Convergence of power series of Complex Analysis 111
May
31
reviewed Leave Open Calculate the sum $\sum_{n=3}^{\infty}\frac{4n-3}{n^3-4n}$
May
29
reviewed Close Proofs that every mathematician should know?