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Alex
  • Member for 11 years, 1 month
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89
Why higher category theory?
Nov 2, 2014
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5
On exactness of the functors $M \mapsto \hat{M}$ and $M \mapsto \hat{A}\otimes_{A}M$
Nov 7, 2013
question
2
Is every polynomial ring over any field regular?
Oct 19, 2014
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28
the equivalence between paracompactness and second countablity in a locally Euclidean and $T_2$ space
20
What is a primary decomposition of the ideal $I = \langle xy, x - yz \rangle$?
15
If $M$ is an artinian module and $f : M\to M$ is an injective homomorphism, then $f$ is surjective.
13
show that $\omega$ is exact if and only if the integral of $\omega$ over every $p$-cycle is $0$
8
example of a flat but not faithfully flat ring extension