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Top Questions
9
votes
The Hopfian property for groups
group-theory
algebraic-topology
math-history
abelian-groups
hopfian-groups
asked Oct 31, 2011 at 15:23
math.stackexchange.com
8
votes
$R$ a DVR with fraction field $K.$ What are the $R$-submodules of $K^n?$
ac.commutative-algebra
modules
asked Jun 4, 2018 at 19:50
mathoverflow.net
7
votes
Rings of finite uniserial type
ra.rings-and-algebras
modules
artin-ring
asked Nov 21, 2021 at 22:12
mathoverflow.net
6
votes
restriction of scalars, reference or suggestion for proof
modules
asked Mar 14, 2011 at 14:56
math.stackexchange.com
5
votes
What is $\mathrm{Hom}(\mathbb{Q},\mathbb{Z}(p^{\infty}))$?
gr.group-theory
abelian-groups
asked May 17, 2018 at 20:17
mathoverflow.net
Top Answers
47
What made you choose your research field?
math.stackexchange.com
27
Some students giggle at me while I teach!
academia.stackexchange.com
25
What is life as "Head of Department ____" like?
academia.stackexchange.com
20
Give an example of a noncyclic Abelian group all of whose proper subgroups are cyclic.
math.stackexchange.com
19
Is it okay to report classmates cheating on exams?
academia.stackexchange.com
16
Does $G\cong G/H$ imply that $H$ is trivial?
math.stackexchange.com
16
Should referees assume that authors will see the full report if their paper is rejected?
academia.stackexchange.com
16
What is the best way to deal with cranks?
academia.stackexchange.com
15
Can I call an assistant professor "Professor"?
academia.stackexchange.com
14
Is it good practice to let students consult their text materials during exams?
academia.stackexchange.com
13
How do you respond to "I was always bad at math"?
math.stackexchange.com
13
How to find less-competitive faculty positions in the US universities?
academia.stackexchange.com
13
How do really talented people in academia think about people who are less capable than them?
academia.stackexchange.com
12
What's a great christmas present for someone with a PhD in Mathematics?
mathoverflow.net
11
If $b_n$ is a bounded sequence and $\lim a_n = 0$, show that $\lim(a_nb_n) = 0$
math.stackexchange.com
8
If $x^3 =x$ then $6x=0$ in a ring
math.stackexchange.com
8
Why do people use "it is easy to prove"?
math.stackexchange.com
8
Can reviewing papers help increase your credibility as a researcher?
academia.stackexchange.com
8
Do teaching evaluations lead to lower standards in class?
academia.stackexchange.com
7
Rings in which every non-unit is a zero divisor
mathoverflow.net
7
Do you find your students are less competent in basic algebra and arithmetic, and, if so, do you believe that this is due to overuse of calculators at an early level?
mathoverflow.net
7
Is using the phrase "... is left as an exercise for the reader" considered good style in academic papers/theses?
academia.stackexchange.com
6
Problem books in higher mathematics
math.stackexchange.com
6
What's the goal of mathematics?
math.stackexchange.com
6
Postdoctoral fellowship -- what is it about?
academia.stackexchange.com
5
Divergent series and $p$-adics
math.stackexchange.com
5
What are applications of number theory in physics?
math.stackexchange.com
5
Stuck on integrating $\int \frac{e^x}{e^{2x}-1}dx$
math.stackexchange.com
5
Reference request: an introduction to Galois theory (without group/ring theory)
math.stackexchange.com
5
Finite Sets, Equal Cardinality, Injective $\iff$ Surjective.
math.stackexchange.com
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