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Top Questions
17
votes
How do mathematicians know what is known?
soft-question
math-history
asked Jul 29, 2014 at 16:31
math.stackexchange.com
11
votes
Why is this determinant positive?
linear-algebra
matrices
determinant
positive-semidefinite
asked Apr 25, 2016 at 2:22
math.stackexchange.com
7
votes
Does every group have a finite index subgroup?
group-theory
asked Oct 17, 2017 at 15:26
math.stackexchange.com
7
votes
Why aren't hyperbolic manifolds CAT(0)?
riemannian-geometry
asked Nov 28, 2017 at 20:48
math.stackexchange.com
5
votes
Finding all graphs with a given automorphism group on $n$ vertices
group-theory
graph-theory
algebraic-graph-theory
asked Aug 28, 2016 at 17:56
math.stackexchange.com
5
votes
Group structure of the unit circle in $\mathbb{F}_q[\sqrt{-1}]$
abstract-algebra
finite-fields
asked Sep 22, 2016 at 14:51
math.stackexchange.com
5
votes
Prove $2^{1/p} - 2^{1/q}$ is irrational
rationality-testing
asked Feb 28, 2016 at 19:20
math.stackexchange.com
Top Answers
No answers with score of 5 or more
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