Mathematics
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Qixiao
  • Member for 8 years, 10 months
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All Questions Answers
Score Newest
question
15
Is there a coherent sheaf which is not a quotient of locally free sheaf?
Jun 28, 2014
question
15
Constructing $\mathbb{P^n}$ "bundle" with different $n$
Jan 29, 2016
question
13
Is skyscraper sheaf quasi-coherent?
Jan 18, 2014
question
10
Is simply connectedness preserved after deleting a high codimension set
Jun 30, 2015
question
10
Difference between $[pt/G]$ and $BG$
Oct 17, 2019
answer
9
Singularities, essential singularities, poles, simple poles
May 16, 2015
question
9
$k[x]/(x^n)$ module with finite free resolution is free
Oct 19, 2014
question
9
Hartshorne II Prop. 6.9
Feb 19, 2014
question
9
Projective space is not affine
Sep 20, 2013
question
8
Do homogeneous ideals have homogeneous primary decomposition?
Oct 13, 2013
Top network posts
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21
Must an algebraic variety with trivial tangent bundle be an abelian variety?
16
Are "ample" and "positive" line bundle the same concept?
14
Does there exist a genus $g$ curve over $\mathbb{Q}$ with every type of stable reduction?
12
Does $0\to I\to\mathrm{Gal}_K\to\mathrm{Gal}_k\to 0$ always split?
12
Is a morphism whose all fibers are $\mathbf{P}^n$ a projective bundle?

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