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GreginGre
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answer
14
axioms of real numbers without multiplication
Sep 11, 2017
answer
12
Why is every vector space free, but not every module?
Jun 27, 2019
answer
11
If $R$ is a noetherian ring, then $ab=1$ implies $ba=1$ $\forall a,b\in R$
Jun 30, 2021
answer
9
Submodules of finitely generated modules
Jun 5, 2017
answer
8
If $x^2 + y^2 = 1$, then find the value of $(3x-4x^3)^2+(3y-4y^3)^2$ where $x,y\in \mathbb {R}$ .
Apr 18, 2023
answer
8
Am I able to calculate the character table of A4 without using the character table of S4?
Nov 26, 2019
answer
7
How is the concept of $\Bbb Z/2\Bbb Z$ extended to $\Bbb N/2\Bbb N$? Is $\Bbb N/2\Bbb N$ ambiguous?
Nov 29, 2019
answer
7
How does the quotient ring $\Bbb Z[x]/(x^2-x,4x+2)$ look like?
Jul 25, 2020
question
7
Which groups can be proven to be simple using Iwasawa criterion?
Sep 21, 2019
answer
7
The monster continued fraction
Dec 8, 2019
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13
Axiom(s) of choice and bases of vector spaces
12
When is $\mathbb{Q}(\sqrt{p+\sqrt{p}})$ a Galois extension of $\mathbb{Q}$?
8
Is there a conceptual reason why every square complex matrix is similar to a complex-symmetric matrix?
8
When is a bilinear form equivalent to a trace form?
8
Can base-change be non-surjective on Brauer groups?