Mathematics
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GreginGre
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All Questions Answers
Score Newest
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
answer
7
The monster continued fraction
Dec 8, 2019
answer
7
For which $n$ and $k$ are there nontrivial homomorphisms from $S_n$ to $\mathbb{Z}/k\mathbb{Z}$?
Dec 13, 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
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
Top network posts
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13
Axiom(s) of choice and bases of vector spaces
11
When is $\mathbb{Q}(\sqrt{p+\sqrt{p}})$ a Galois extension of $\mathbb{Q}$?
8
When is a bilinear form equivalent to a trace form?
8
Can base-change be non-surjective on Brauer groups?
8
Perfect numbers, Galois groups and a polynomial

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