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GreginGre's user avatar
GreginGre's user avatar
GreginGre
  • Member for 10 years, 2 months
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All Questions Answers
Score Newest
question
13
Axiom(s) of choice and bases of vector spaces
Sep 10, 2017
answer
11
When is $\mathbb{Q}(\sqrt{p+\sqrt{p}})$ a Galois extension of $\mathbb{Q}$?
Oct 11, 2022
answer
8
When is a bilinear form equivalent to a trace form?
Jan 29, 2018
answer
8
Can base-change be non-surjective on Brauer groups?
Jan 17, 2020
answer
8
Given that $n > 3$ and $z$ is a Gaussian integer, when can $z^n \pm z$ be a rational integer?
May 4, 2022
question
7
Computation of $H^2(S_n,\mathbb{Z}/2\mathbb{Z})$
Aug 2, 2017
answer
7
Example of a central simple algebra
Apr 23, 2019
answer
7
Perfect numbers, Galois groups and a polynomial
Sep 19, 2020
question
6
Torsors over complete local fields
Apr 13, 2018
answer
6
What are your favorite instructional counterexamples?
Feb 17, 2019
Top network posts
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14
axioms of real numbers without multiplication
12
Why is every vector space free, but not every module?
11
If $R$ is a noetherian ring, then $ab=1$ implies $ba=1$ $\forall a,b\in R$
8
Submodules of finitely generated modules
8
If $x^2 + y^2 = 1$, then find the value of $(3x-4x^3)^2+(3y-4y^3)^2$ where $x,y\in \mathbb {R}$ .

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