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Mathematics

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Answer a question with score of 1 or more.
Awarded 80054 times.
How exactly do we prove that $A$ is a subspace of a vector space $B?$
Awarded Nov 12 at 23:18
(post deleted or otherwise unavailable)
Awarded Nov 12 at 22:02
"Converse" of Borel-Cantelli Lemma
Awarded Nov 12 at 20:13
What is a simple example of a limit in the real world?
Awarded Nov 12 at 9:01
Other methods/ generalisations to $\int_0^{\frac{\pi}{2}} \int_0^{\frac{\pi}{2}} \frac{\tan ^{-1}(\sin x \sin y)}{\sin x} d x d y?$
Awarded Nov 11 at 23:52
Shortest Path Between 2 Points Wiki Proof
Awarded Nov 11 at 19:26
Compute $\lim_{n\to\infty}\sum_{i=1}^{2n^4+n^2}\frac{5n^2+1}{n^4+i}$
Awarded Nov 11 at 11:34
How do you show that the estimator for the covariance matrix is unbiased?
Awarded Nov 11 at 7:01
How to rotate a 3d object drawn along the z axis so that it lies along some other arbitrary axis
Awarded Nov 11 at 5:47
Is there a term for [a - x(mod(a))]?
Awarded Nov 10 at 14:32
Application of Weierstrass M- Test
Awarded Nov 10 at 12:34
Why does the (n²) change based on brackets?
Awarded Nov 10 at 6:54
$H(X\otimes\mathbb{Z}/n\mathbb{Z})\otimes H(Y\otimes\mathbb{Z}/n\mathbb{Z})\cong H(X\otimes Y\otimes\mathbb{Z}/n\mathbb{Z})$ natural then $n$ prime.
Awarded Nov 10 at 4:12
Linear algebra over quaternions
Awarded Nov 10 at 3:48
$\mathcal{H}(\Omega)$ is an integral domain if and only if $\Omega$ is connected
Awarded Nov 9 at 17:50
Three pulleys are connected to each other via two ropes. By how many centimeters does point Q move upwards?
Awarded Nov 9 at 15:12
Given a $1-1$ continuous function $f:\mathbb R^n\to\mathbb R^m$, $A$ open and disconnected implies $f(A)$ is open and disconnected in $f(\mathbb R^n)$
Awarded Nov 9 at 8:40
Minimal projective resolution
Awarded Nov 9 at 3:27
Pattern spotted for zeros of polynomials arising from hypergeometric roots
Awarded Nov 9 at 3:27
How to solve a system of nonlinear Hamilton-Jacobi PDE's numerically in MATLAB/Maple/other?
Awarded Nov 8 at 23:41
Convergence in probability of product of random variables and uniform boundedness in probability of the sequence
Awarded Nov 8 at 16:15
Proving $\mathbb{R}^2$ is not homeomorphic to $\mathbb{R}^3$
Awarded Nov 8 at 14:37
A question related to continuous plane curves
Awarded Nov 8 at 10:12
Constant e and the natural log
Awarded Nov 8 at 8:20
Irrational elements of the Cantor set
Awarded Nov 8 at 5:28
A cross-section of a pyramid
Awarded Nov 8 at 2:35
infinite summation of derivatives of a convergent function
Awarded Nov 8 at 2:22
3D coordinates of circle center given three point on the circle.
Awarded Nov 7 at 18:28
Supremum of a product measurable function...
Awarded Nov 7 at 18:28
Analysing an optics model in discrete and continuous forms
Awarded Nov 7 at 15:05
Solve $ \sqrt{x^3 + 3x^2 + 3x + 9} = 2 + \sqrt[3]{x^2 + 6x - 1} $
Awarded Nov 7 at 14:23
Question about derivatives, Jacobian Matrix and non-linear least square curve fitting
Awarded Nov 7 at 12:49
List of number of knots distinguished by Alexander polynomials
Awarded Nov 7 at 12:13
On the production model ${\bf x} = {\bf C x} + {\bf d}$
Awarded Nov 7 at 11:53
How to find middle point given angle and 2 other points?
Awarded Nov 7 at 2:04
Cosine of a triangular random variate
Awarded Nov 7 at 1:55
partial derivative of a facet normal wrt to one of its vertex
Awarded Nov 7 at 1:48
Calculating the area under $2x^2+1$ using the method of exhaustion
Awarded Nov 6 at 20:05
Faulhaber's polynomials and irreducibility in the sums of powers
Awarded Nov 6 at 19:50
Can $\det(A + B)$ be expressed in terms of $\det(A)$, $\det(B)$, $n$?
Awarded Nov 6 at 18:33
Dynamic Programming Algorithm Requirements
Awarded Nov 6 at 16:11
Is my entropy calculation correct? Clustering entropy example
Awarded Nov 6 at 14:55
Criterion that $ax^2+bx+c=n^2$ has integer solutions
Awarded Nov 6 at 14:22
Jacobian of a dot product
Awarded Nov 6 at 12:58
(post deleted or otherwise unavailable)
Awarded Nov 6 at 12:30
Calculating $\sum_{m=0}^{\infty}\sum_{n=0}^{\infty}\frac{(-1)^{n+m}}{\sqrt{n+1}\,\sqrt{n+2m+2}}$
Awarded Nov 6 at 11:35
In a Hausdorff door space, at most one point is a limit point
Awarded Nov 6 at 8:18
Product not definable by addition in Th($\mathbb{R},+,\cdot,0,1,<)$
Awarded Nov 6 at 7:05
Find the domain convergence of a series
Awarded Nov 6 at 3:07
Difficulty in proof of a lemma in Katznelson's book about Harmonic Analysis chapt. 2 section 3 (divergence sets)
Awarded Nov 5 at 23:51
(post deleted or otherwise unavailable)
Awarded Nov 5 at 21:17
(post deleted or otherwise unavailable)
Awarded Nov 5 at 21:17
Decomposition of mutual information for conditionally independent variables
Awarded Nov 5 at 20:08
(post deleted or otherwise unavailable)
Awarded Nov 5 at 14:50
requirement on proposition
Awarded Nov 4 at 19:12
Let $f$ be a function such that $|f(x)| \leq x^2$ for all $x$ on a neighborhood of $0$. Prove that $f$ is differentiable at $0$ and calculate $f'(0)$.
Awarded Nov 4 at 13:02
For a number field, a prime integer is ramified if and only if it divides the discriminant
Awarded Nov 4 at 7:42
Bounded norms on Banach spaces
Awarded Nov 4 at 2:27
Clarification of a step in the proof that preserving p-points is iterable of Bartoszyński-Judah.
Awarded Nov 3 at 16:22
Projection of the Support of a Transport Plan
Awarded Nov 3 at 16:22
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