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Top Questions
23
votes
Is there any easy way to solve this lock puzzle?
strategy
lights-out
asked Apr 1, 2020 at 5:06
puzzling.stackexchange.com
8
votes
Prove that $\mu^* (F \setminus E) = 0.$
measure-theory
outer-measure
asked May 15, 2020 at 15:25
math.stackexchange.com
6
votes
Isn't the Lebesgue measure space complete?
measure-theory
lebesgue-measure
outer-measure
asked Jun 11, 2020 at 15:46
math.stackexchange.com
5
votes
What can be said about the sum of the series?
real-analysis
sequences-and-series
absolute-convergence
asked Aug 15, 2020 at 16:38
math.stackexchange.com
5
votes
Prove that $T(v) = v,$ for some $v \in \Bbb R^3 \setminus \{0\}.$
linear-algebra
eigenvalues-eigenvectors
rotations
orthogonal-matrices
fixed-points
asked Dec 12, 2020 at 19:02
math.stackexchange.com
5
votes
Find the cardinality of the image of $\varphi.$
matrices
group-theory
group-homomorphism
asked Jan 27, 2020 at 7:51
math.stackexchange.com
Top Answers
6
isn't right to prove that $\sqrt{2}$/4 is irrational number?
math.stackexchange.com
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