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Mathematics

Famous Question

 Famous Question
Question with 10,000 views. This badge can be awarded multiple times.
Awarded 21835 times.
When are two semidirect products isomorphic?
Awarded 7 hours ago
Adding and Removing Non-Compounded Percentages does not produce the same result?
Awarded 16 hours ago
How to find the tangent space to a matrix space
Awarded yesterday
Complexity of the algorithms for Singular Value Decomposition
Awarded 2 days ago
A contractible space is path connected.
Awarded 2 days ago
Prove that $A$ is dense if and only if any non-empty open set in $X$ has an intersection with $A$
Awarded 2 days ago
How to solve for steady state matrix symbolically?
Awarded Dec 7 at 4:01
An example of open but not closed map.
Awarded Dec 6 at 16:07
Geometric intuition for the Weingarten map
Awarded Dec 5 at 13:00
Show a set E is measurable iff its characteristic function is measurable.
Awarded Dec 5 at 11:37
Check if a graph is Eulerian
Awarded Dec 5 at 8:55
prove (by grammar or closures) that the prefix language is context free
Awarded Dec 5 at 5:42
Generalizing $\int_{0}^{1} \frac{\arctan\sqrt{x^{2} + 2}}{\sqrt{x^{2} + 2}} \, \frac{\operatorname dx}{x^{2}+1} = \frac{5\pi^{2}}{96}$
Awarded Dec 5 at 2:30
Sphere inscribed in a cone
Awarded Dec 5 at 0:47
Number of ways to place $k$ non-attacking rooks on an $m\times n$ chessboard
Awarded Dec 4 at 7:08
Why does the Elo rating system work?
Awarded Dec 4 at 5:15
If $ax^2 + 2hxy + by^2 = 1$, prove that $d^2y/dx^2 = \frac{h^2 - ab}{ (hx + by)^3}$
Awarded Dec 2 at 17:28
Why a function with compact support vanishes on the boundary of its domain
Awarded Dec 2 at 9:32
How can I quickly know the rank of this / any other matrix?
Awarded Dec 1 at 23:13
Mutual Information Chain Rule
Awarded Dec 1 at 10:27
What is the difference between gradient of divergence and Laplacian?
Awarded Dec 1 at 8:35
Fourier transform of $1/x^2$ given by Mathematica
Awarded Dec 1 at 8:16
Green's Function for 2D Poisson Equation
Awarded Dec 1 at 7:05
What is dimension over $\mathbb R$ of the space of $n\times n$ Hermitian matrices? [duplicate]
Awarded Dec 1 at 2:33
Domain of arctan(1/x)
Awarded Nov 30 at 11:53
Prove or disprove that if A, B, and C are nonempty sets and $A \times B = A \times C$, then $B=C$
Awarded Nov 30 at 6:24
Why is/isn't the derivative of a differentiable function continuous?
Awarded Nov 30 at 2:38
If $A$ and $B$ are symmetric matrices, so is $A+B$
Awarded Nov 29 at 8:36
How can I prove that (p→q)∧(p→r) ⇔ p→(q∧r)
Awarded Nov 28 at 4:01
How is exponentiation defined in Peano arithmetic?
Awarded Nov 27 at 21:40
Computing Fourier transform of power law
Awarded Nov 27 at 6:28
Fubini's Theorem for Infinite series
Awarded Nov 26 at 20:38
What am I proving with the Havel-Hakimi theorem?
Awarded Nov 26 at 17:02
prove change of basis matrix is unitary
Awarded Nov 26 at 15:12
What is the Adjoint of inverse of a matrix?
Awarded Nov 26 at 13:53
Solve $x^3 +3x -4 =0$ in Real numbers
Awarded Nov 26 at 5:20
Cardinality of all cardinalities
Awarded Nov 25 at 23:02
Can the curl operator be generalized to non-3D?
Awarded Nov 25 at 15:01
Continuous Poisson Distribution
Awarded Nov 25 at 8:45
Show that $\frac{y}{x^2+y^2} $ is harmonic except at $y=0,x=0$
Awarded Nov 24 at 16:44
Market Making Card Game Strategy
Awarded Nov 24 at 11:40
Integral of Thomae's function
Awarded Nov 23 at 23:41
What is the kernel of the tensor product of two maps?
Awarded Nov 23 at 10:19
How do I evaluate the Lebesgue measure of a ball?
Awarded Nov 23 at 9:14
Quickest way to determine a polynomial with positive integer coefficients
Awarded Nov 23 at 3:28
Representations of the symmetric group $S_3$
Awarded Nov 22 at 23:47
Tensor product of localization is isomorphic to localization of tensor product
Awarded Nov 22 at 14:39
Asymptotic for binomial coefficients
Awarded Nov 22 at 11:13
Best textbook for Geometric Measure Theory [closed]
Awarded Nov 21 at 16:54
Number of Bit Strings with Five Zeros
Awarded Nov 21 at 7:15
Is composition of covering maps covering map? [duplicate]
Awarded Nov 20 at 18:36
Aggregating standard deviation to a summary point
Awarded Nov 20 at 11:00
Angle bracket and sharp bracket for discontinuous processes
Awarded Nov 20 at 9:43
What is the connection between Jordan Canonical Form and minimal polynomial?
Awarded Nov 19 at 19:49
Which perfect squares can be written as the sum of two squares?
Awarded Nov 19 at 2:28
thoughts about $f(f(x))=e^x$
Awarded Nov 18 at 16:47
Motivation for spectral graph theory.
Awarded Nov 18 at 9:50
Fourier transform of a radial function
Awarded Nov 18 at 4:14
Truth or lie? "At least one [of the two] of us is a liar."
Awarded Nov 17 at 19:58
Permutation with Duplicates
Awarded Nov 17 at 18:17
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