Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It only takes a minute to sign up.

Sign up to join this community
Anybody can ask a question
Anybody can answer
The best answers are voted up and rise to the top
Mathematics

Explore our questions

Ask Question
more tags
Interesting 45 Bountied Hot Week Month
3 votes
0 answers
16 views

How best to convert Tait-Bryan angles to Euler Angles? For VR Controller project.

user avatar
TheGeek007
  • 31
2 votes
1 answer
27 views

Approximate $e^x$ with bounded-size sliding window over its Taylor series?

user avatar
David G. Stork
  • 27.1k
5 votes
0 answers
52 views

Does the functional equation $f(x)-f\left(x-\frac{x^2}3\right)=\frac{x}{3-x}-\log\left(\frac3{3-x}\right)$ define an analytic function?

user avatar
Zhaohui Du
  • 1,658
1 vote
2 answers
33 views

Is the above definition in this book ok? ("Lecture Notes on Elementary Topology and Geometry" by I. M. Singer and J. A. Thorpe)

user avatar
mr_e_man
  • 4,168
1 vote
0 answers
22 views

Heat equation using Fourier transform with IC equal to zero

user avatar
spaldix
  • 21
1 vote
1 answer
12 views

Can one check if a map of infinite rank free modules is an isomorphism modulo the maximal ideal

user avatar
Alex Scheffelin
  • 159
2 votes
0 answers
20 views

Question on: it holds "trivially".

user avatar
Reuben
  • 463
1 vote
0 answers
14 views

Find all polynomials $p(x) \in \mathbb{C}[x]$ such that $p(\mathbb{R}) \subset \mathbb R $ and $p(\mathbb{C - R}) \subset \mathbb{C - R }$.

user avatar
49-49
  • 4,109
1 vote
1 answer
27 views

Solve $e^{-x} < \frac{1}{x^2 + 1}$

user avatar
Átila Correia
  • 7,801
1 vote
0 answers
18 views

Trouble understanding indexed sets

user avatar
ramanujans alkhazarim
  • 55
1 vote
1 answer
22 views

Why are the red parts of this expression present $\int_a^b \sqrt{g_{cd}\frac{dx^c}{\color{red}{d\lambda}}\frac{dx^d}{\color{red}{d\lambda}}}d\lambda$?

user avatar
subrosar
  • 3,960
1 vote
1 answer
10 views

Computing $D_v^2(f)(x_0)$, if $f(x,y)=x^3+x+y^2-2y+1$, $v=\frac{1}{5}(3,4), x_0=(\frac{1}{3},1)$

user avatar
Blue
  • 69.7k
0 votes
0 answers
11 views

$X_1,...,X_n$ is random sample of a population with $X\sim \text{UNIF}(0,1)$. Let $Y_n=\sum_{i=1}^n X_i$. Use Central Limit Theorem to...

user avatar
Daniel Bonilla Jaramillo Haase
  • 147
1 vote
0 answers
7 views

Rewriting quadratic optimization problem with negative definite matrix

user avatar
user35083
  • 71
0 votes
0 answers
22 views

Suppose $(a^2+3ab+3b^2-1)$ divides $(a+b^3)$. Prove: $k^3$ divides $(a^2+3ab+3b^2-1)$

user avatar
MathFail
  • 145
3 votes
3 answers
1k views

conditional probability - conditioned twice

user avatar
CommunityBot
  • 1
1 vote
1 answer
35 views

Is it true that $\lim_{x\to\ 0} f(x)=A$ implies $\lim_{\frac{x}{2}\to\ 0} f(x)=A$?

user avatar
Hossien Sahebjame
  • 1,789
2 votes
1 answer
81 views

Lemma 10.32 of Lee's Introduction to Smooth Manifolds

user avatar
subrosar
  • 3,960
-1 votes
0 answers
25 views

Can we consider following definitions to be equivalent?

user avatar
1muflon1
  • 377
0 votes
0 answers
10 views

Let $R = F[X_1,..., X_n]$, where F is a field and the subalgebra $A = F[X_1, X_2/X_1,..., X_n/X_1]$ of the fraction field of R.

user avatar
Sheldon Oliver
  • 21
0 votes
0 answers
10 views

Extension of continuous maps to product space.

user avatar
Deracless
  • 443
0 votes
2 answers
37 views

Does $\frac{x}{||x||}$ maximize inner product with $x$ among vectors of norm $1$?

user avatar
George Tsoutsinos
  • 543
2 votes
1 answer
57 views

Find all entire functions $f$ such that $|f(z)| \leq |\sin(z)|$

user avatar
Cameron Williams
  • 27.7k
2 votes
1 answer
39 views

Were these hypercomplex number sets already defined in the literature for some $n\neq 3$? Are they associative?

user avatar
John Wayland Bales
  • 19.8k
0 votes
0 answers
7 views

How to use logical quantifies in a right-to-left language

user avatar
talopl
  • 57
1 vote
1 answer
32 views

Imaginary Numbers in the Ring of $p$ Adic Integers?

user avatar
Lubin
  • 59.7k
1 vote
1 answer
43 views

What's the expected number of pairs to arrange 9 cats and 8 dogs into 17 places on a row?

user avatar
Rebecca J. Stones
  • 25.6k
0 votes
0 answers
25 views

Taking Partial Derivatives of the function $F=F(\xi,\phi) \quad\text{where}\quad \xi=\frac{h}{h_*} \text{ and } \phi=\frac{\psi}{h}$.

user avatar
sadman-ncc
  • 303
1 vote
1 answer
23 views

Let $a$ and $b$ be integers and $m$ be a positive integer. Prove that $ab \equiv [(a\pmod m)\cdot(b\pmod m)] \pmod m$

user avatar
Hossien Sahebjame
  • 1,789
1 vote
1 answer
18 views

How to calculate the height of subdividing lines of a conical frustum?

user avatar
Aiden Chow
  • 2,076
0 votes
1 answer
29 views

Can I prove that $\{(x,y):x<y\}$ and $\{a:\exists x\exists y(a=(x,y)\land x<y)\}$ are the same set?

user avatar
Fumi Futagawa
  • 1
0 votes
0 answers
16 views

How is $\sum_{n=1}^{n}(X_{i}-\mu)^2$ distributed?

user avatar
thesensei
  • 89
0 votes
0 answers
9 views

Galois representation, Tate twist

user avatar
Sayako Hoshimiya
  • 504
0 votes
1 answer
17 views

Find dual linear program to modified Steiner tree problem

user avatar
RobPratt
  • 33.8k
1 vote
1 answer
27 views

Arc lengths of parallel sections of spherical cap?

user avatar
David K
  • 85.8k
2 votes
1 answer
2k views

Approximating midpoint of a curve

user avatar
CommunityBot
  • 1
2 votes
2 answers
29 views

Rotation of axes in arbitrary dimension

user avatar
Sammy Black
  • 17.4k
3 votes
0 answers
33 views

Random walk with a killing probability

user avatar
MathIsLife12
  • 1,247
6 votes
0 answers
100 views

Positive integer solutions of $ab+1=x^2, ac+1=y^2, bc+1=z^2, x+z=2y$

user avatar
Somos
  • 29.6k
1 vote
0 answers
14 views

Ways to find the sum of complex roots with only positive imaginary parts?

user avatar
Baklava Gain
  • 475
0 votes
1 answer
30 views

Probability of two persons predicting cricket score correctly.

user avatar
Matthew H.
  • 7,542
1 vote
1 answer
16 views

Properties of the $L^2$ dual realizing test functions as distributions

user avatar
Jacob Manaker
  • 7,609
0 votes
0 answers
7 views

Calculating composition of quadratic forms with discriminant of form $-4n$

user avatar
PasuPasuLaw
  • 1
1 vote
0 answers
13 views

Showing that the Lie-algebra of $G \subset SL(V)$ is semisimple and irreducible on $V$.

user avatar
user12345
  • 217
0 votes
0 answers
33 views

Relationship Between "Transition Probabilities" and "Order Statistics"

user avatar
RobPratt
  • 33.8k
0 votes
0 answers
9 views

Definition of $Ad(r)$ the automorphism of a Lie-algebra $\mathfrak{g}$ of $G \subset SL(V)$.

user avatar
user12345
  • 217
1 vote
0 answers
19 views

How to find the closest two point given a point on an polygon?

user avatar
angryavian
  • 81.7k
0 votes
0 answers
15 views

Pattern Recognition and Machine Learning Exercise 3.6

user avatar
tambores
  • 1
1 vote
1 answer
21 views

Non atomic ring example

user avatar
Arkady
  • 8,342
1 vote
0 answers
12 views

Number of components of topological space

user avatar
orphene12
  • 11
0 votes
0 answers
11 views

Proof that additive measure on a semi-algebra can be extended to an additive measure on corresponding algebra

user avatar
quanticbolt
  • 1,521
0 votes
1 answer
27 views

Rewriting partial derviative $\partial f^{-1}/\partial x$ with respect to another variable

user avatar
peek-a-boo
  • 36.5k
3 votes
1 answer
90 views

Random walk on a slippery slope

user avatar
Mike O'Connor
  • 79
0 votes
1 answer
16 views

Linear transformation of skew-symmetric block matrix

user avatar
user1551
  • 123k
0 votes
0 answers
23 views

Is there a squeeze theorem analog for minimizers?

user avatar
JohnDoe1234
  • 83
3 votes
1 answer
909 views

How to Take Dot Product of a Vector and a Bivector

user avatar
CommunityBot
  • 1
2 votes
0 answers
19 views

Coarse moduli space for semi-stable vector bundles on a curve.

user avatar
student_du_03
  • 41
0 votes
0 answers
10 views

What are the possible bounds on the norm of a vector with respect to positive definite matrix?

user avatar
Amin
  • 121
0 votes
0 answers
17 views

Does convergence of every sequential limit "along a path" imply "convergence of the path"?

user avatar
Indraneel Tambe
  • 1,255
0 votes
0 answers
16 views

Why life expectancy calculate as 1/μ in SIR model?

user avatar
Kaz
  • 1
1 vote
1 answer
27 views

Is this property always or never satisfied when $R=N$?

user avatar
Hector
  • 826
1 vote
0 answers
41 views

When two functions touch

user avatar
Beatriz Gonçalves
  • 13
1 vote
1 answer
19 views

Smith Normal forms in a polynomial ring

user avatar
Viktor Vaughn
  • 17.4k
2 votes
1 answer
26 views

Understanding an example of forcing

user avatar
Patrick Stevens
  • 34.4k
3 votes
1 answer
49 views

Prove or disprove: $\frac{a_{\lceil a_n\rceil}}{a_n} \rightarrow \infty$

user avatar
Severin Schraven
  • 15.3k
3 votes
0 answers
39 views

Explanation regarding determinant derivation

user avatar
user1551
  • 123k
0 votes
0 answers
18 views

A Question about norm equality

user avatar
Alp
  • 510
1 vote
0 answers
16 views

(complex)Let $f: D \subset \mathbb R^2 \to \mathbb R^2$ be a function defined on an open subset $D \subset \mathbb R^2$...

user avatar
Hossien Sahebjame
  • 1,789
0 votes
0 answers
4 views

Dilation Properties of the Discrete Fourier Transform

user avatar
Ben
  • 310
4 votes
1 answer
76 views
+50

Prove that a bounded nondecreasing function is differentiable Lebesgue-almost everywhere

user avatar
dirich1337
  • 306
1 vote
1 answer
14 views

A Lemma Regarding $C^\ast$-algebras (states)

user avatar
Martin Argerami
  • 181k
1 vote
0 answers
14 views

Reference request: A specific book on homotopy and covering spaces

user avatar
brainjam
  • 6,276
0 votes
0 answers
9 views

When is a subset Lebesgue measurable?

user avatar
Peirot
  • 3
0 votes
1 answer
14 views

Lower bound for Probability of Maximum of Normal Variables

user avatar
Sameer Kailasa
  • 8,395
0 votes
0 answers
9 views

Reference for $X' = \{ \lambda ||\cdot||'(x) : \lambda \in \mathbb R,\quad x \in X \setminus \{ 0 \} \}$

user avatar
blamethelag
  • 1,439
1 vote
1 answer
38 views

What numerical scheme could I use to solve this integral equation?

user avatar
user9106985
  • 195
3 votes
1 answer
19 views

Adjoint of a linear mapping mapping into a product of Banach Spaces

user avatar
Martin Argerami
  • 181k
1 vote
0 answers
27 views

$x_1x_2x_3x_4 > y_1y_2y_3y_4 \implies x_1+x_2+x_3+x_4 > y_1+y_2+y_3+y_4$

user avatar
husnucuk
  • 145
3 votes
3 answers
53 views

Differentiability of a piecewise defined discontinuous function

user avatar
Ethakka appam with Chai
  • 7,468
1 vote
0 answers
28 views

Filtered colimits in the category of toposes and logical morphisms

user avatar
whatsapp car
  • 280
0 votes
0 answers
14 views

About the integral domain $R=\{\frac{a}{b}\in\mathbb{Q}|(b,2)=(b,3)=1\}$

user avatar
Carlos Hervás Rodríguez
  • 35
2 votes
2 answers
56 views

Linking the "Formal Definition of Convexity" to the "Informal Definition of Convexity"

user avatar
antonoyaro8
  • 609
0 votes
0 answers
17 views

A common, ambiguous matrix operation (flanking matrices)

user avatar
Orion kb
  • 1
1 vote
1 answer
29 views

Why are there so many algorithms for solving a system of linear equations?

user avatar
Jeff
  • 4,772
2 votes
0 answers
40 views

showing $\lim\limits_{t\to 0} I(t) = 0$ and determining $\lim\limits_{t\to\infty} I(t)$

user avatar
Fred Jefferson
  • 822
0 votes
0 answers
13 views

Equivalent definitions of a Liouville number

user avatar
Philomath
  • 65
1 vote
0 answers
22 views

Finding an estimation for a term using step functions

user avatar
Snoop
  • 8,626
1 vote
0 answers
25 views

Example $14.18$ out of Lee's Intro to smooth manifolds

user avatar
Hossien Sahebjame
  • 1,789
3 votes
0 answers
42 views

Do linearly independent vector fields with vanishing Lie bracket always have integral manifolds which are level sets?

user avatar
user167131
  • 81
1 vote
0 answers
8 views

Help me find a way of sorting pairs of candidates for ranked pairs voting when not all voters rank all candidates

user avatar
Luke Thornburgh
  • 11
0 votes
0 answers
16 views

How to denote the set of all probability distributions and its degenerate probability distributions?

user avatar
braaterAfrikaaner
  • 143
2 votes
0 answers
20 views

"Universal family" used despite moduli space not being fine?

user avatar
KReiser
  • 50.5k
1 vote
1 answer
46 views

Is flattening a natural isomorphism?

user avatar
Mark Saving
  • 20.8k
2 votes
0 answers
12 views

Computing local cohomology over a noncommutative ring

user avatar
user533763
  • 53
4 votes
0 answers
19 views

Let $\mu, \nu$ both have finite second moments and $\nu \in \Pi(\mu, \nu)$. Then the inner product $\langle \cdot, \cdot\rangle$ is $\pi$-integrable

user avatar
Analyst
  • 1,507
-2 votes
0 answers
21 views

$\pi$ Spamingss

user avatar
XU JIA
  • 69
Browse more Questions

Your privacy

By clicking “Accept all cookies”, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy.