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Mathematics
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lhl73
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4
Let $P$ be a Sylow $p$-subgroup of $G$ and suppose $x\in P$ has order $p$ and $C_G(x)$ has cyclic Sylow $p$-subgroups. Prove $P$ is cyclic.
Jun 28, 2021
answer
3
Calculating the Galois group of $f = X^4+20$.
Jun 15, 2020
answer
3
$M_x$ is free $\Rightarrow \widetilde{M}$ is locally free at $x$
Jun 16, 2020
answer
3
Alternative definition of sheaf associated to a module?
Jun 4, 2021
answer
3
A zero-divisor whose every localization is zero in a Noetherian ring whose every associated prime is minimal
Aug 31, 2021
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3
Is there any isomorphism between these two local rings?
Oct 7, 2021
answer
2
Understanding the steps in Pugh's proof about the Least Upper Bound Property
Jun 13, 2020
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2
Extension of quasi-coherent sheaves
Nov 20, 2020
answer
2
Exercise 1.3 in Harris' Algebraic Geometry
Sep 20, 2021
answer
2
Proving a matrix is diagonalizable given eigenvectors and information about characteristic polynomial ranks
Jan 20, 2022