Mathematics
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HK Lee's user avatar
HK Lee's user avatar
HK Lee
  • Member for 11 years, 4 months
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  • South Korea
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All Questions Answers
Score Newest
answer
28
A manifold for Hilbert's hotel
Oct 12, 2016
question
21
Is $\mathbb Z _p^*=\{ 1, 2, 3, ... , p-1 \}$ a cyclic group?
Jan 30, 2013
answer
20
Minimum of two metrics is metric
Nov 28, 2013
answer
17
I need some help with the integral $\int_0^\infty \frac{x^3}{e^x+1} \, dx$
May 16, 2019
answer
14
Tiling a cylindrical piece of paper
Oct 16, 2016
question
12
$ a+b+c=0,\ a^2+b^2+c^2=1$ implies $ a^4+b^4+c^4=\frac{1}{2}$
Apr 13, 2018
answer
11
The Sphere Does Not Admit a Metric Isometry into a Euclidean Space.
Jun 26, 2017
answer
11
multivariable limit of $\frac{x^2-y^2}{\sqrt{x^2+y^2}}$
Apr 13, 2015
answer
10
Show that $g(a) = g(b) = 0,\ \int_a^b f(x)g(x)dx=0 $ implies $f(x)=0$
Apr 11, 2015
question
9
Kunneth formula on product of spheres
Nov 1, 2013
Top network posts
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6
Orbifold vs Alexandrove space vs Limit of manifolds
6
Positively curved metrics on $S^2\times S^2$
5
Hausdorff dimension of convex set in ${\bf R}^n$

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