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Top Questions
15
votes
Can class number decrease as we grow over some fixed number field?
algebraic-number-theory
asked Nov 19, 2019 at 5:07
math.stackexchange.com
9
votes
Cusp forms with integer Fourier-coefficients
nt.number-theory
modular-forms
asked Jul 3, 2020 at 17:26
mathoverflow.net
9
votes
Fuchsian groups and Eichler's result
reference-request
gr.group-theory
gt.geometric-topology
fuchsian-groups
asked Aug 14, 2020 at 1:38
mathoverflow.net
Top Answers
13
For an irrational number $\alpha$, prove that the set $\{a+b\alpha: a,b\in \mathbb{Z}\}$ is dense in $\mathbb R$
math.stackexchange.com
12
Irreducible polynomial which is reducible modulo every prime
math.stackexchange.com
8
Prove that the union of countably many countable sets is countable.
math.stackexchange.com
6
For an irrational number $\alpha$, prove that the set $\{a+b\alpha: a,b\in \mathbb{Z}\}$ is dense in $\mathbb R$
math.stackexchange.com
5
Is $\mathbb{Q}(\sqrt{2}, \sqrt{3}) = \mathbb{Q}(\sqrt{2}+\sqrt{3})$?
math.stackexchange.com
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