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red_trumpet
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  • Germany
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Hi there, I'm studying mathematics in germany.

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14
What is a simple definition of the pullback of a section?
Dec 28, 2019
10
Is the pull-back of the structure sheaf the structure sheaf?
Jan 18, 2019
10
Unexpected proof that $\alpha!$ divides $k!$ if $\alpha_1 + \dots + \alpha_n = k$.
Mar 4, 2019
9
Confusion on the definition of a complex structure
Sep 27, 2021
9
Good argument that $\Omega_{X/k} = 0$ implies that $X$ is finite.
Jun 28, 2021
8
Proof of Serre Duality in Hartshorne
Jul 4, 2018
7
Is the natural map $f^* f_* \mathcal{F} \to \mathcal{F}$ surjective?
May 5, 2020
7
What exactly is a universal central extension?
May 24, 2023
7
Hartshorne Exercise III 3.2: $X$ is affine iff every component is affine
Apr 11, 2019
6
Can one find commuting homotopies of maps?
Dec 19, 2023
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74
How to read mp3 tags in shell?
35
Why does chktex lint "command terminated with space"?
30
How to read mp3 tags in shell?
29
Rearrange PDF pages using the command-line
22
How to backup GNOME terminal emulator settings?