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Interesting 49 Bountied Hot Week Month
0 votes
0 answers
32 views

Direct Product of Finite Groups

Shelley Chen
  • 19
-1 votes
0 answers
27 views

Trifocal "Conicoids"?

Narasimham
  • 37.9k
0 votes
1 answer
20 views

Trouble understanding the tangent plane of a surface

nasekatnasushi
  • 96
1 vote
1 answer
60 views

Why $2d^2$ = $n^2$ implies that $n$ is a multiple of $2\,$?

Shiva Venkata
  • 629
0 votes
0 answers
8 views

2d threshold satisfying problem with minimum number of elements

TonyMontana18
  • 1
1 vote
1 answer
23 views

Show the equality of two congruence transformations (geometry)

Robert Z
  • 140k
0 votes
0 answers
3 views

Operator reversibility

wxist
  • 87
0 votes
0 answers
33 views

Are there "lie fields" other than $\mathbb R$ and $\mathbb C$?

Carla Parla
  • 179
2 votes
1 answer
24 views

On the product of analytic functions

MathWonk
  • 1,993
0 votes
1 answer
28 views

Is $E= [1,\infty)$ connected in $\mathbb{R}$ with the usual metric

ya.sa
  • 24
0 votes
0 answers
3 views

Find the variance of the number of turns in a die tossing game

Mr. Ivan
  • 135
0 votes
0 answers
3 views

Uniqueness of solution to SDE

blablabla
  • 1
0 votes
0 answers
5 views

Are these two definitions of cofibration the same?

FShrike
  • 17.4k
3 votes
1 answer
19 views

Generalization of Chinese remainder theorem to non-normal subgroups

Arturo Magidin
  • 367k
5 votes
2 answers
63 views

Computing integral that involves Dirac Delta Function

Qmechanic
  • 10.2k
0 votes
0 answers
20 views

Extended real line is Hausdorff.

Andrey Yanyuk
  • 1,487
1 vote
1 answer
13 views

Hrushovski construction - Infinite descending chaing of finite graphs with decreasing $\delta_\alpha$-dimension

Alex Kruckman
  • 65.3k
-1 votes
1 answer
33 views

Probability of student being shy

Kamal Saleh
  • 1,007
-1 votes
0 answers
14 views

Given N buckets, X row, and Y column, I want to distribute items such that each bucket is as uniform as possible

Alan Chen
  • 1
0 votes
0 answers
3 views

Differentiation commuting with integral in counting measure vs. general measure

Aryan Dugar
  • 359
-2 votes
0 answers
17 views

Transient and steady-state response of Third order differential equation

Bindu Yamajala
  • 9
0 votes
0 answers
4 views

Calculate needed average to satisfy demand

Simon
  • 1
0 votes
0 answers
16 views

How find y from $x^2 y^3 d x+x\left(1+y^2\right) d y=0$

NiceJJ
  • 31
0 votes
0 answers
4 views

The basis of special linear Lie algebras over finite fields

stupid boy
  • 131
5 votes
3 answers
6k views

Calculate the coordinates of the third vertex of triangle given the other two and the length of edges in the cheapest computational way

mmj
  • 135
0 votes
0 answers
18 views

Name for a Power Series with Binomial coefficient

Magma
  • 1
2 votes
1 answer
20 views

Is the integral closure of a Gorenstein domain still Gorenstein?

Mohan
  • 16.8k
-1 votes
0 answers
26 views

Nicer form for $\Psi_s(t)=\sum_{n=0}^\infty[\frac{d^n}{dt^n}\frac{\csc^2\pi t}2][\frac{d^{s-1-n}}{dt^{s-1-n}}\frac{(t+s-1)!}{t!}{s\choose n+1}]$?

Blue
  • 70.8k
0 votes
0 answers
8 views

Optimization of quadratic forms

mr_snazzly
  • 291
0 votes
0 answers
17 views

Find largest $k$ given $n$: one number is chosen from each interval $[nj,n(j+1)),\ j\in\{1,\ldots,k\};$ no three of these numbers form a $3$-term A.P.

Adam Rubinson
  • 14.6k
1 vote
1 answer
34 views

Let $θ\sim\text{Unif}([0,2\pi])$ and define $X_k=\sin(kθ)$, $k\in\Bbb N$. Show that $(X_1+⋯+X_n)/n→0$ a.e

Oliver Díaz
  • 29.6k
0 votes
0 answers
7 views

Problem with giving a sequence of a mixture Problem

dragontec12
  • 37
0 votes
1 answer
14 views

function with summable derivative is uniformly continuous?

Giuseppe Negro
  • 29.4k
0 votes
0 answers
6 views

Dead-zone Modeled as Switching System

Tarsis Augusto
  • 1
0 votes
0 answers
7 views

Show that limit of non-linear recursively defined sequence which is not monotone exists

AlaskaYoung
  • 127
3 votes
1 answer
39 views

Continuity with composition functions

AnotherUser
  • 1,582
0 votes
1 answer
24 views

Non vanishing differential form

Didier
  • 13.3k
0 votes
0 answers
10 views

Convergence of median and convergence in distribution

CantorEuler1996
  • 1
0 votes
0 answers
22 views

Mayer Vietor Sequence for DeRham Cohomology

permutation_matrix
  • 950
1 vote
1 answer
48 views

What is the differential of the logarithm on a matrix Lie group?

Cosmas Zachos
  • 5,281
5 votes
0 answers
10 views

What modifications to the axioms of primitive recursion would restrict its expressivity to that of Presburger arithmetic?

jpt4
  • 51
0 votes
0 answers
6 views

Convergence of discrete measures

O-Schmo
  • 79
-1 votes
0 answers
5 views

Prove that a linear mapping is non singular iff the image of an independentset is independent

adan gul
  • 1
3 votes
1 answer
16 views

What's the fourier transform of xT with T being a tempered distribution

Mark Viola
  • 170k
10 votes
1 answer
182 views

Evaluating $\int_{-\infty}^\infty \frac{\ln{(x^4+x^2+1)}}{x^4+1}dx$

Quanto
  • 76.5k
1 vote
0 answers
19 views

Question about covariant derivative of the vector field

Andyale
  • 323
0 votes
0 answers
5 views

Can any sample proportion less than 0.5 be used to support a claim that the population proportion is greater than 0.5?

bru1987
  • 2,439
2 votes
0 answers
30 views

find all triples $(x,y,z)$ of positive integers such that $x\leq y\leq z$ and $x^3 (y^3 + z^3)=2012(xyz+2)$

user3379
  • 1,403
1 vote
0 answers
16 views

How would I go about finding an explicit formula for c given a and b?

Curious Cube
  • 11
2 votes
0 answers
14 views

Convolution of distribution and test function: continuity at the distribution variable

insipidintegrator
  • 5,768
2 votes
0 answers
18 views

$ P( \omega) $ in not an inductive set

Battle
  • 21
0 votes
0 answers
22 views

Two questions regarding nonmeasurable sets of real numbers.

user107952
  • 15.6k
1 vote
1 answer
28 views

Trouble on proof step of: $\lim_{n\rightarrow+\infty}a_n=+\infty \Longrightarrow \liminf_{n\rightarrow+\infty}a_n=+\infty$

Giuseppe
  • 11
1 vote
0 answers
18 views

Net convergence in initial topology

Paul Frost
  • 63.7k
1 vote
0 answers
13 views

Decompose lattice rectangle into lattice pentagons (KöMaL A.344 April 2004)

Ivalo
  • 19
0 votes
3 answers
3k views

How to solve quadratic recurrence relation

Alan Gómez
  • 11
1 vote
0 answers
8 views

Does the sequence of iterated derivatives of $2^x$ converge uniformly to the zero function on any interval that is bounded above?

user107952
  • 15.6k
1 vote
0 answers
29 views

Let $(X, d)$ be a separable metric space. Then the space of all real-valued bounded uniformly continuous functions on $X$ is separable

Analyst
  • 2,921
8 votes
2 answers
975 views

Condition for a compact set to be the support of a continuous function?

CommunityBot
  • 1
0 votes
0 answers
11 views

Question about curvature and torsion of a manifold.

Andyale
  • 323
1 vote
1 answer
62 views
+50

Solution for $\Delta u = 0$ for which $u(\cos(t), \sin(t)) = t(2\pi - t) \ , \ 0 \leq t \leq 2\pi$

WindSoul
  • 1,158
0 votes
1 answer
10 views

Examine for convergence

nasekatnasushi
  • 96
0 votes
0 answers
24 views

When is the differential entropy nonnegative?

ASA
  • 326
0 votes
0 answers
10 views

Need help with an example of Beppo Levi's Theorem

Alp
  • 710
2 votes
1 answer
38 views

A weird theorem of existence

Anne Bauval
  • 8,335
0 votes
0 answers
20 views

Complex analysis background for Ordinary Differential Equations.

mafematician
  • 1
0 votes
0 answers
12 views

The measurability of a function w.r.t. the Borel $\sigma$-algebra generated by an initial topology

Analyst
  • 2,921
1 vote
0 answers
16 views

Finding out how long it would take to crack a password

DavidPH
  • 111
1 vote
0 answers
6 views

Vector valued higher order ODE with scalar product

DynkinDansk
  • 11
0 votes
0 answers
18 views

How many different chaotic attractors are there?

NicAG
  • 327
0 votes
0 answers
10 views

Commutative algebra reference as a prerequisite to algebraic curves.

Kishalay Sarkar
  • 2,589
1 vote
1 answer
16 views

Give an example of a ring $A$ and a multiplicative set $S$of $A$ such that $S^{-1}A$ is a PID (but not a field), but $A$ is not a PID.

rschwieb
  • 144k
0 votes
0 answers
14 views

Graph theory: shortest path without crossing edges

Ebya
  • 101
0 votes
0 answers
10 views

Any symplectic manifold is a Poisson manifold.

Anil Bagchi.
  • 2,587
0 votes
0 answers
10 views

generating multivariate poisson dataset

heyoka955
  • 3
0 votes
0 answers
4 views

Bounding energy of products

trying
  • 111
0 votes
0 answers
11 views

Integral of a gradient over a closed loop

Dio
  • 305
1 vote
0 answers
12 views

How to find the joint gaussian pdf using the linearity of expectation?

12tegami
  • 66
3 votes
0 answers
54 views

When do we generally use $x=\frac{1-t}{1+t}$ substitution?

Goku
  • 1,865
4 votes
0 answers
31 views

Let $A_N$ be the subset of $\{1,\ldots,\ N\}$ that has no $3$-term A.P's and maximises $\sum_{n\in A_N}\frac{1}{n}.$ Does $A_N\to A003278?$

Adam Rubinson
  • 14.6k
0 votes
0 answers
3 views

Deriving variational inference for a simple example

sam
  • 133
0 votes
0 answers
16 views

Independence of the Euler characteristic of the chosen triangulation

Arturo Magidin
  • 367k
2 votes
1 answer
76 views

How to compute $\partial^2_{n,n} u(x_0)$ for $x_0\in\partial\Omega$?

Daniele Tampieri
  • 8,578
0 votes
0 answers
12 views

Why do we care about Method of averaging

Alek Murt
  • 469
0 votes
0 answers
9 views

Computing order of meromorphic function on hyperelliptic Riemann surface

warzasch
  • 1
0 votes
0 answers
2 views

Reference of automorphism with respect to locally nilpotent derivations

Sky
  • 113
0 votes
0 answers
5 views

If $N\models M=\cup\{M_\beta:\beta<\omega_1\}$ and $N\prec H(\theta)$ is countable, why is it true that $M\cap N=\cup\{M_\beta:\beta<N\cap \omega_1\}$

pdf1234
  • 23
0 votes
0 answers
9 views

why is pushforward of a kähler current kähler?

Dima Sustretov
  • 1,805
0 votes
0 answers
5 views

How can a general automorphism of the unit disc be parabolic or hyperbolic?

Kang
  • 115
0 votes
0 answers
7 views

Show that $\frac{1}{1+f(n)} = 1 +\mathcal{O}(g(n))$ for $f(n) = \mathcal{O}(g(n)), g(n) = \mathcal{o}(1)$

3nondatur
  • 2,922
3 votes
2 answers
22 views

Why probability distribution is defined on event space and not on sample space?

12tegami
  • 66
1 vote
0 answers
18 views

Approximate solution of the heat equation

Falcon
  • 3,077
0 votes
0 answers
7 views

Is a multivariate, continuous, increasing, real-valued function of a continuous random vector a continuous random variable?

möbius
  • 2,152
6 votes
2 answers
107 views

Roots of $\cos{x}+\cosh^2{x}$

Moo
  • 10.4k
1 vote
0 answers
6 views

Uniformly approximing powers of decreasing exponentials by $e^{-t}P(t)$ with $P$ polynom

Carlier Louis
  • 11
2 votes
1 answer
40 views

Continuity of Hilbert transform

Ryszard Szwarc
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