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Interesting 47 Bountied Hot Week Month
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Differentiation and counting problem

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Nanda
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2 answers
28 views

Number of groups possible we can compose

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Robert Shore
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0 answers
7 views

PDE solution using the mountain step theorem

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K-2liz
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0 answers
13 views

Finding the transformation matrix that maps one 3d plane to another 3d plane

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KReiser
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0 answers
6 views

Volume of intersection of two partial spheres in spherical coordinates

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KReiser
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3 votes
1 answer
1k views

Homogeneous Sobolev space and distributions

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CommunityBot
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0 votes
1 answer
22 views

Question about the Thue-Morse Sequence and its relation with the Fabius function

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colt_browning
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-2 votes
0 answers
29 views

MATH 130A PROBABILITY

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N. F. Taussig
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18 views

Approximation of Poisson random variable with the sum of exponential random variable

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엄익훈
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1 vote
0 answers
17 views

Unique vector space topology on $F^n$?

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Nik Weaver
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0 answers
32 views

Why is LIPET or LIATE the way it is? Integration by parts

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Ahmadh Hassan
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1 vote
0 answers
13 views

Trying to find an efficient algorithm for a problem involving primes

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PurplePenguin1616
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0 votes
0 answers
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Proving a linear map of polynomials is surjective

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Valor Vaporeon
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5 votes
2 answers
84 views

optimal rotations around 3D sphere using only two axes

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Cesareo
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0 answers
11 views

Image of Integral Operators

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user273331
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0 answers
6 views

Combinators that form a 1-symbol basis of alternating associative combinatory logic

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Legendary Wizard
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0 answers
2 views

Connection between collocation methods and quadrature rules

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Federico Toso
  • 173
0 votes
1 answer
22 views

Shattering Orbs - Expected cuts in a hanging chain of Orbs to arrive at the Highest Orb (Probability Question)

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heropup
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1 vote
1 answer
13 views

Behavior of projection operators in Hilbert space

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Martin Argerami
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1 vote
0 answers
17 views

Evaluate $\int_{-\infty}^{\infty} \coth x \exp(-a \cosh x + b \sinh x) \, dx$

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nullgeodesic
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4 votes
0 answers
62 views

Must two groups with all subgroups of the same order be isomorphic?

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Shaun
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3 votes
2 answers
65 views

Check whether the map is a homeomorphism.

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Kritiker der Elche
  • 3,600
1 vote
1 answer
29 views

power of 2 walks of a graph

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Misha Lavrov
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0 votes
0 answers
11 views

Solve for stagnation point distance from center of ellipse

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rdemo
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0 answers
24 views

Proof of equivalence between two definitions of the limit superior

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Abced Decba
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0 answers
25 views

How to find a factor of $\zeta - 1$ in $\mathbb{Q}(\zeta)$ for $\zeta := e^{2 \pi i / 5}$

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3nondatur
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0 votes
3 answers
96 views

Question regarding "integration by parts"

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bjcolby15
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0 votes
1 answer
2k views

Derive Time from Sorting Method/Time Complexity

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1 vote
0 answers
60 views

Show that every open set in $\mathbb{R}$ can be written as a countable union of open intervals

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K. Jiang
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1 answer
12 views

An exhaustion function on a non-empty space must have a minimum value

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user114263
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1 vote
0 answers
25 views

Are there four dimensional generalizations of the Reuleaux triangle and other solids of constant width?

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MWQOJYNWQA
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0 votes
0 answers
21 views

Changing variables when f(x) goes to f(-x)

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requiemman
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3 votes
4 answers
320 views

Novice – is there something as noise in an expression in mathematics?

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Stef
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0 answers
47 views

Infimum of the Upper Sums

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Paul Sinclair
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1 vote
1 answer
55 views

inequality proof $a^n - 1 > n(a^\frac{n+1}{2} - a^\frac{n-1}{2})$

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Alma Arjuna
  • 1,773
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0 answers
23 views

Transforming existing von Mises samples with new $\mu$ and $\kappa$

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Kiord
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-1 votes
1 answer
22 views

How is choosing $2$ things out $3$ and then arranging them same as choosing $1$ thing out $3$ and then choosing the $1$ thing out of the remaining $2$

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TShiong
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-1 votes
0 answers
17 views

Evaluating a Line Integral Over an Equilateral Hyperbola

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amWhy
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0 answers
22 views

Classical analogy of a parallel transport

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Akhaim
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1 vote
0 answers
20 views

Exended Euclidean algorithm, row reduction of Sylvester matrix, and gcd

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Arrow
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2 votes
1 answer
1k views

Determine whether the given pair of statements are contrary, contradictory, or neither.

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0 answers
16 views

Question about Schwarz Reflexion Principle Proof from Stein's complex Analysis

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MathLearner
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1 vote
2 answers
19 views

Numerically stable form for vector rejection between two nearly parallel vectors?

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gct
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1 vote
1 answer
12 views

Birkhoff-Witt theorem and left adjoint of the embedding functor

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Qiaochu Yuan
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0 answers
12 views

Equivariant cohomology and Cartan cohomology

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user984949
  • 111
-3 votes
0 answers
11 views

Consider Euclidean space R 3 and let W be the subspace that has a basis

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chrstphrrrrrrrrrr
  • 1
0 votes
1 answer
18 views

Estimating mean of a random variable

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BGM
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4 votes
1 answer
38 views

How to count the number of line segments in a knotwork?

caduk's user avatar
caduk
  • 3,391
4 votes
1 answer
103 views

Sylvester matrix without coordinates and its geometry

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Qiaochu Yuan
  • 409k
0 votes
0 answers
21 views
+50

Finding implicit form of Nyquist curve without using a general algorithm for Groebner bases.

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Math Keeps Me Busy
  • 493
0 votes
1 answer
40 views

Doubt in algebraic closure of a finite fields

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Alphyte
  • 179
0 votes
1 answer
16 views

Maximum number of edges in a Line Graph L(G)

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yanjunk
  • 189
-1 votes
0 answers
21 views

Need help solving limit with exponential and factorial

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Chappie733
  • 1
2 votes
2 answers
34 views

Is $\sin\left(\frac{2\pi k}{N}\right) + \sin\left(\frac{2\pi k(N-1)}{N}\right) =0$?

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Ajin Shaji Jose
  • 318
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0 answers
9 views

Transformation of Curves Using a Function

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Ayesca
  • 562
6 votes
2 answers
99 views

$I = \int_0^{\pi/2} \left( \int_0^{\pi/2} \frac{\log(\cos(x/2)) - \log(\cos(y/2))}{\cos(x) - \cos(y)} dx\right) \ dy $

Martin's user avatar
Martin
  • 515
1 vote
0 answers
34 views

Explicit expression for $\int_{0}^{2\pi}e^{-\alpha\cos(\theta)(1+\gamma\cos(\theta))}d\theta$

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Thomas Andrews
  • 175k
2 votes
0 answers
111 views

Is it a good idea to learn about hyperreals and how they are related to limits before beginning to learn about calculus?

José Carlos Santos's user avatar
José Carlos Santos
  • 421k
1 vote
1 answer
28 views

What is the technical terminology for defining the biggest natural number that allows for an inequality?

Misha Lavrov's user avatar
Misha Lavrov
  • 134k
0 votes
0 answers
30 views

Calculate the integral with branches

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TShiong
  • 1,257
0 votes
0 answers
19 views

Min Max Function Binary Indicator Optimization Result representation

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TShiong
  • 1,257
0 votes
0 answers
28 views

Show that $T$ is a topological embedding of $X$ in itself.

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it's a hire car baby
  • 9,194
-2 votes
0 answers
26 views

Multivariable continuity

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Mochi
  • 1
1 vote
0 answers
16 views

Use of the inequality $A \succeq B^{\dagger}$ when B is not invertible

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Burak
  • 51
0 votes
0 answers
9 views

How should I prove that $a \ast b \not\sim b \ast a$ as based loops at $(0,0,0)\ $?

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Akiro Kurosawa
  • 417
11 votes
1 answer
2k views

How to study for ring theory?

Peterש's user avatar
Peterש
  • 11
10 votes
1 answer
334 views

Polyhedron with only π/4 dihedral angles

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Dr. Richard Klitzing
  • 4,021
4 votes
0 answers
40 views
+50

Conditional Gaussian Comparison Inequality

Michael Li's user avatar
Michael Li
  • 47
1 vote
0 answers
32 views

Diagonal convergence on a compact set implies uniform convergence (Proof verification)

Leonidas's user avatar
Leonidas
  • 1,023
1 vote
1 answer
16 views

Entropy: Show that $2[H(X, Y ) + H(Y, Z) + H(Z, X)]\geq 3H(X, Y, Z) + H(X) + H(Y ) + H(Z)$.

stochasticboy321's user avatar
stochasticboy321
  • 7,308
0 votes
1 answer
39 views

Simplying an ODE expression.

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Lutz Lehmann
  • 122k
1 vote
1 answer
33 views

On a convergent and divergent Picard iteration

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sunny
  • 691
1 vote
0 answers
23 views

Heat flow outside a disk

Steffen's user avatar
Steffen
  • 11
3 votes
1 answer
37 views

Multi variable integral : $\int_{0}^{1}\int_{0}^{\sqrt{1-x^2}} \frac{e^y}{\sqrt{1-x^2-y^2}} dy dx$

Ninad Munshi's user avatar
Ninad Munshi
  • 32.4k
0 votes
0 answers
16 views

How to find the normal form of the given differential equation

Gonçalo's user avatar
Gonçalo
  • 4,457
1 vote
1 answer
353 views

Formal dimensional analysis?

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James Bowery
  • 241
0 votes
0 answers
24 views

Is the Vandermonde Matrix Representing an Isomorphism?

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Aristarchus_
  • 363
-1 votes
0 answers
16 views

show a combination proof by induction. I dont know how to continue

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pustolerro
  • 37
1 vote
0 answers
22 views

Conditions that lead empirical set of covariance matrices to follow optimal transport path?

dherrera's user avatar
dherrera
  • 148
0 votes
0 answers
19 views

Solving two equations with two unknowns yields same result as solving the sum of the equations (node voltages)

Carl's user avatar
Carl
  • 671
0 votes
0 answers
16 views

quadratic optimisation with L1 constraints with cvxpy

jam123's user avatar
jam123
  • 1
1 vote
0 answers
26 views

Spivak Calculus on Manifolds Problem 5-31

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john
  • 33
0 votes
0 answers
6 views

Necessary condition for a minimizer in a convex and closed set

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coboy
  • 1,212
1 vote
0 answers
30 views

Find an SO(3)-equivariant continuous function from $(\mathbb{R}^3)^n$ to SO(3)

Didier's user avatar
Didier
  • 61
0 votes
0 answers
9 views

Why do the projective objects in a ribbon category form an ideal?

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D.N. Yetter
  • 11
5 votes
0 answers
44 views

"put together" elementary substructures

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Julián
  • 616
0 votes
0 answers
5 views

Transform 2d finite element into standard 2d element

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N00BMaster
  • 97
0 votes
0 answers
13 views

Analogue of Mostow Rigidity for $3$ dimensional Anti-de Sitter space

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user1180312
  • 35
0 votes
0 answers
63 views

Simple functions converge to $f$ almost everywhere

Kadmos's user avatar
Kadmos
  • 1,005
0 votes
1 answer
108 views

Why algebraic variety is considered as scheme?

KCd's user avatar
KCd
  • 42.2k
1 vote
0 answers
17 views

Spivak 4-23 How to construct the $k$-cell?

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Redcrazyguy
  • 353
5 votes
1 answer
134 views

The $n\times n$ matrices $A^n, A^{n-1},\dots,\mathrm{id}_n$ are linearly dependent

Zuy's user avatar
Zuy
  • 4,528
5 votes
0 answers
90 views

Given analytic $F(x)$ find $f(x)$ such that $\forall x. F(x) = f(f(x))$

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Math Keeps Me Busy
  • 493
1 vote
1 answer
53 views

Integrating the Fabius function $q(x) = \int_0^x F(u) du$

Martin R's user avatar
Martin R
  • 106k
0 votes
0 answers
21 views

Why is the discrete exponential map not injective once a path reaches a saddle vertex?

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Francisco José Letterio
  • 2,094
1 vote
1 answer
61 views

An open set in $\mathbb{A}^1$ isomorphic to $V(XY-1)$

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DTPW
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