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Top Questions
23
votes
Is $\mathbb Z _p^*=\{ 1, 2, 3, ... , p-1 \}$ a cyclic group?
group-theory
number-theory
finite-groups
asked Jan 30, 2013 at 9:15
math.stackexchange.com
11
votes
$ a+b+c=0,\ a^2+b^2+c^2=1$ implies $ a^4+b^4+c^4=\frac{1}{2}$
algebra-precalculus
riemannian-geometry
convex-geometry
asked Apr 13, 2018 at 17:42
math.stackexchange.com
9
votes
Cup product on torus
algebraic-topology
cohomology
asked Jun 7, 2013 at 23:41
math.stackexchange.com
9
votes
Lie algebra isomorphism between $\mathfrak{sl}(2,{\bf C})$ and $\mathfrak{so}(3,\Bbb C)$
lie-algebras
asked Jun 18, 2013 at 7:59
math.stackexchange.com
9
votes
Kunneth formula on product of spheres
algebraic-topology
asked Nov 1, 2013 at 1:42
math.stackexchange.com
8
votes
Lie algebras ${\rm sl}(2,{\bf R})$ and $({\bf R}^3,\wedge)$ are not isomorphic
abstract-algebra
lie-algebras
asked Dec 7, 2013 at 4:30
math.stackexchange.com
8
votes
Limit Rule $\lim f(x)^{g(x)}$
calculus
asked Apr 4, 2014 at 4:11
math.stackexchange.com
8
votes
An involute of a shortest path in a strictly convex surface in $\mathbb{R}^3$.
riemannian-geometry
convex-geometry
metric-geometry
asked Oct 20, 2020 at 17:30
math.stackexchange.com
7
votes
Triangle with $\sin^2 A +\sin^2 B =\sin C$
trigonometry
asked Jan 23, 2013 at 3:54
math.stackexchange.com
7
votes
Application of Helly theorem to unit cube case
discrete-geometry
convex-geometry
asked Aug 30, 2017 at 13:38
math.stackexchange.com
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Top Answers
28
A manifold for Hilbert's hotel
math.stackexchange.com
21
Minimum of two metrics is metric
math.stackexchange.com
17
I need some help with the integral $\int_0^\infty \frac{x^3}{e^x+1} \, dx$
math.stackexchange.com
14
Tiling a cylindrical piece of paper
math.stackexchange.com
12
The Sphere Does Not Admit a Metric Isometry into a Euclidean Space.
math.stackexchange.com
11
multivariable limit of $\frac{x^2-y^2}{\sqrt{x^2+y^2}}$
math.stackexchange.com
10
Show that $g(a) = g(b) = 0,\ \int_a^b f(x)g(x)dx=0 $ implies $f(x)=0$
math.stackexchange.com
10
Prove that the following is a constant function
math.stackexchange.com
9
Prove that, at least one of the matrices $A+B$ and $A-B$ has to be singular
math.stackexchange.com
9
The shortest curve that divides the unit sphere into two regions of equal area
math.stackexchange.com
8
Gaussian curvature of a surface of revolution
math.stackexchange.com
8
Compute $\lim_\limits{n\to\infty}a_n$ where $a_{n+2}=\sqrt{a_n.a_{n+1}}$
math.stackexchange.com
7
Compute $\displaystyle \lim_{x \rightarrow -3} \frac{\frac{1}{3} + \frac{1}{x}}{3+x}$
math.stackexchange.com
7
Is there an "intrinsic" difference between a plane and a cylinder?
math.stackexchange.com
7
Showing that diffeomorphisms between manifolds preserves orientability
math.stackexchange.com
6
How prove this $\int_{a}^{b}xf(x)dx\le\int_{a}^{b}xg(x)dx$
math.stackexchange.com
6
Exponent of matrix
math.stackexchange.com
6
Is the set of rationals between $\sqrt{2}$ and $\sqrt{3}$ open or closed in $\mathbb Q$?
math.stackexchange.com
6
Any two bases of a finite dimensional vector space must have the same number of elements.
math.stackexchange.com
6
Prove that $T$ is one to one?
math.stackexchange.com
6
Examples of compact negatively curved constant curvature manifold
math.stackexchange.com
6
What does 초고수 mean?
korean.stackexchange.com
6
What's a natural way to say that someone works somewhere (for a job)?
korean.stackexchange.com
5
Factorise $f(x)=x^5-x$ into a product of irreducibles in $\mathbb Z_{5}[x]$
math.stackexchange.com
5
$\displaystyle\lim_{x\to -8} \frac {8 − |x|} {8 + x} \ $ How do I solve?
math.stackexchange.com
5
Using vectors to show a fact about a regular n-gon
math.stackexchange.com
5
How to prove that $ {\mathbf{GL}_{n}}(\mathbb{R}) $ is dense in $ {\mathbf{M}_{n}}(\mathbb{R}) $
math.stackexchange.com
5
A geometric problem
math.stackexchange.com
5
Proving that Levi-Civita connection is preserved by isometries
math.stackexchange.com
5
Divergent Curves and Complete Manifolds
math.stackexchange.com
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