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Interesting 43 Bountied Hot Week Month
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1 answer
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Determining Parameter Values for Solutions of a System of Equations

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Tim
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0 answers
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Find the fundamental group of the punctured solid bitorus.

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SubGui
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4 votes
1 answer
62 views

How to unify ergodic transformation and ergodic random process?

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user65023
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0 answers
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Calculating expected value in baby probability vs measure-theoretic probability

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Sam Y.
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3 votes
0 answers
88 views

The Hanf number of higher-order logic

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SJe967
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6 votes
1 answer
192 views
+50

Why is $|\log|\sqrt{U_1}-\sqrt{U_0}||^{1/4}$ approximately normal?

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温泽海
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1 vote
1 answer
36 views

Understanding the role of independence in concentration inequalities

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stochasticboy321
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0 answers
16 views

Proposition 10.13, "Attaching a disk".

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Ben123
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1 answer
13 views

How is $L = \bigcup_{\alpha\in\text{Ord}}L_\alpha$ defined in ZFC?

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Noah Schweber
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-1 votes
0 answers
11 views

Derivatives of Linear Functions vs Derivatives of Non-Linear Functions?

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user_436830
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1 vote
1 answer
926 views

Understanding Proof: simple Functions converge to a measurable function

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2 votes
1 answer
44 views

If $\operatorname{Hom}_{\mathcal{C}}(a, -) \cong \operatorname{Hom}_{\mathcal{C}}(-, a)$, must $\mathcal{C}$ be a groupoid?

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Martin Brandenburg
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0 answers
8 views

Natural Boundaries and the Number of Singularities

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neddo
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1 vote
0 answers
15 views

On proving $L=\bigcup_{\alpha\in\text{Ord}}L_{\alpha}$ is a model of the Axiom of Pairing

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Sam
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-1 votes
0 answers
8 views

On proving $\bigcup_{\alpha\in\text{Ord}}L_\alpha$ is a model of the Axiom of Separation

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Sam
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14 votes
5 answers
634 views

Prove that $\prod_{i<j} (p_i^{p_j}-p_j^{p_i})$ is divisible by $5777$

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Brayant Tagne
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0 answers
7 views

Extension of tangent vector field on sphere

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Victor Valdebenito Silva
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0 answers
9 views

Finding a limit curve for the binomials.

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Leucippus
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-1 votes
1 answer
24 views

How do I row reduce this matrix?

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Kris Nenezic
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3 votes
1 answer
36 views

Find $a \in \mathbb{R}$ and a subspace $\mathbb{W}$ such that $\mathbb{S} \oplus \mathbb{W} = \mathbb{H}$ and $\mathbb{W} \cap \mathbb{T} \ne \{0\}$

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Anne Bauval
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0 answers
10 views

Prove equilibrium point of system is asymptotically stable

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Sammy Black
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-1 votes
0 answers
17 views

Exist an equation to find all divisors of a positive integer number?

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RJuliao
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0 answers
5 views

Theorem 12.14 in Jech's Set Theory

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Sam
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0 answers
9 views

On pages 164 and 165 in Jech's Set Theory

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Sam
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1 vote
1 answer
57 views

Generalizing Bernoulli to Binomial without summing

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efthimio
  • 197
0 votes
1 answer
34 views

Time derivative of Heaviside step functional H[f(t)]

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M. Wind
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2 votes
1 answer
30 views

Maximum of real polynomials in terms of its coefficients

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Medo
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1 vote
2 answers
100 views

Prove that a projector $P$ with $\Vert P\Vert_2=1$ is orthogonal

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Tomer
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1 vote
1 answer
18 views

Struggling with 2 exercices related to "almost surely convergence"

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geetha290krm
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0 answers
13 views

How to divide up the divisors of a number among 3 numbers or 4 or 5 or so on, is my way correct

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Anish Alapati
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0 votes
1 answer
1k views

Show $S$ is a subspace of $P_2$

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1 vote
0 answers
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Different value in V component in SVD

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aki
  • 71
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0 answers
15 views

Questions about a MSE post solution to the question from Dummit & Foote Chapter 9 section 1 exercise 10

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Seth
  • 3,807
4 votes
1 answer
32 views

Homotopy equivalence between $ S^1 $ and a space of quadratic equations with distinct real roots

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psl2Z
  • 4,464
6 votes
2 answers
224 views
+150

Do the rotations in a single plane, and a single other rotation, generate all rotations?

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Moishe Kohan
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1 vote
1 answer
56 views

How to prove that $f = 0$ almost everywhere given vanishing Lebesgue integrals over all subintervals?

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julio_es_sui_glace
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2 votes
2 answers
38 views

Probability a simple symmetric random walk doesn’t return to zero in $N$ steps

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Mike Earnest
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1 vote
0 answers
21 views

If $F(a,b,c)=g_1(a,f_1(b,c))=g_2(b,f_2(c,a))$, then $F(a,b,c)=g_3(c,f_3(a,b))$ for some functions $f_3,g_3$

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hbghlyj
  • 3,651
1 vote
1 answer
31 views

Biconjugate of a nonconvex function and global minimum

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River Li
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3 votes
1 answer
1k views

Question regarding Lebesgue Integrability in $\sigma$ -finite spaces

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1 answer
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Fubini's Theorem: $\int_{2}^x (\int_2^t \frac{du}{log(u)})\frac{1}{\sqrt{t}}dt = \int_{2}^x \int_u^x \frac{1}{\sqrt{t}\cdot log(u)}du dt=...$

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Nanayajitzuki
  • 2,375
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0 answers
14 views

(Non)existence of unsatisfiable 3-CNF involving partitioned variables

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MrLatinNerd
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1 answer
39 views

Prerequisites for Cocchiarella modal logic book?

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Tankut Beygu
  • 3,056
1 vote
0 answers
21 views

Defining the area enclosed by a 2D Jordan curve.

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M.S.
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1 answer
31 views

IVP Finite Forward Difference Step Size

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gpmath
  • 1,447
2 votes
1 answer
120 views

(Tao) Lemma 3.4.9: Let $X$ be a set, then show the set $\{Y:Y\subseteq X\}$ is a set, from the powerset axiom.

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Francis Augustus
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1 answer
22 views

Sifting Property of the Dirac Delta in the Limit as the Integration Interval Shrinks to Zero

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Chris Eagle
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1 vote
2 answers
56 views

Elliptic Curves over finite field which contains Klein's-4 Group as a subgroup

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Anuradha N.
  • 445
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0 answers
7 views

Minimal Regularity Conditions for Arbitrary Precise Approximation of Convex Bodies by Polygons and Polyhedra in Hausdorff Distance

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DoKoba
  • 3
7 votes
1 answer
68 views

Does there exist a functor from commutative rings to commutative rings that takes the poset of prime ideals to its opposite?

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Smiley1000
  • 3,233
1 vote
1 answer
41 views

Completely positive maps on the norm closure of an operator system

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UtsabrajSarkar
  • 398
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0 answers
33 views

Prove that $~~\arg \sqrt{z+c}\geq \arg\sqrt{z-c}~~$ where $c\in\mathbb{R}$

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user2661923
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0 votes
0 answers
23 views

Probability of getting the same pairings in 2 rounds of games from 2 teams of 4

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Unknown
  • 1
0 votes
0 answers
47 views

Flatness of Maps of Form $R \to R[X_1,...,X_n]/I$

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user267839
  • 8,413
1 vote
1 answer
31 views

Weak convergence of measures and the sup norm

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Matsmir
  • 3,698
1 vote
1 answer
37 views

Why is there only one normal ultrafilter in L[U]?

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Noah Schweber
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0 answers
32 views

Canonical Identification of Tangent Vector of Matrix Lie Group

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EmailsAreHorrible
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0 votes
0 answers
25 views

conditional probability of a function of dependent random variables

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van der Wolf
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0 answers
82 views

How to prove that the area bounded by the curve: $x^4+y^4+2 x^2 y^2 -m x^2-(1-m) y^2=0$ is a fixed value? (when 0＜m＜1)

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Treex
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0 answers
30 views

Fourier coefficients of powers of sinus

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STrick
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9 votes
0 answers
191 views
+50

What are associative identities of all Cayley-Dickson numbers

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Gere
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3 votes
1 answer
116 views

Triple Integral - Varying Order of Integration

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user170231
  • 22.5k
-2 votes
0 answers
32 views

Finding maximum and minimum distances

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CrSb0001
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5 votes
2 answers
242 views

For any real value of 𝑥, what can be the minimum value of $3𝑥^4 − 20x^3 − 72𝑥^2 − 168𝑥 + 5000$?

Oscar Lanzi's user avatar
Oscar Lanzi
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4 votes
1 answer
118 views

UMVU estimator of $\lambda^2$ via Rao-Blackwell

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tychonovs-scholar
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8 votes
3 answers
1k views

Minimum number of terms resulting from the product of two polynomials with a given number of terms

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CommunityBot
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1 vote
1 answer
31 views

Using Disc Method getting wrong Volume

Sammy Black's user avatar
Sammy Black
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0 votes
0 answers
36 views

Intuition and proof behind finding the day of the week by the date

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Bill Dubuque
  • 278k
0 votes
1 answer
45 views

Ratio between convex combinations

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daw
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1 vote
0 answers
29 views

Calculating the pdf of the sum of dependent random variables, $X+Y$, given the pdf of the difference, $X-Y$, and marginals, $X$ and $Y$.

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Sammy Black
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0 votes
0 answers
9 views

How to retrieve indices of dependent columns or rows in a singular matrix

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amine hanini
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183 votes
52 answers
19k views

Is there any integral for the Golden Ratio?

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Jaume Oliver Lafont
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0 votes
0 answers
7 views

Model Least Frequently Used cache algorithm with Markov chain

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user1752873
  • 19
0 votes
1 answer
17 views

Alternate derivation of an expectation for a Brownian martingale

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John Dawkins
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1 vote
0 answers
25 views

Inverse Fourier sine transform of product of two functions

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Felix Marin
  • 92.3k
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0 answers
29 views

How can I show that the map $t\mapsto \int_0^t |f'(B_s)|^2~ds$ is strictly increasing for a planar Brownian motion $B$?

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user123234
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-1 votes
0 answers
22 views

Finding the shortest distance and time for it using relative velocity

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Felix Marin
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-1 votes
0 answers
11 views

$\mathbb{P}(4W_1^2 > W_4^2)$, where $W_t$ is a standard brownian motion

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user1507632
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0 votes
0 answers
12 views

Exploring the Application of a Trimodal State Formula in Balancing Systems

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Chris Peterson
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1 vote
0 answers
36 views

Does a 16-valence 192-edge Graceful Graph exist?

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Ed Pegg
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0 answers
14 views

How to construct a propositional logic formula to enforce a certain relation?

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fady abo swees
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1 vote
0 answers
28 views

Splitting a checkered figure into boundary squares

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Igor Turkin
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0 votes
0 answers
20 views

Conditions for integrand recovering

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sam wolfe
  • 3,575
1 vote
0 answers
31 views
+50

Limit of NT-Xent

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Anson Savage
  • 97
0 votes
2 answers
67 views

Number of divisor of $5^{7}\times 7^{10}$ of the form $3k+2$, $k\geq 0$

vallev's user avatar
vallev
  • 1,056
0 votes
0 answers
17 views

Lipschitz continuity of solution operator of controlled ODE.

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Sammy Black
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0 votes
0 answers
13 views

Regarding Invariance under modular transformations

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Tanmoy Pati
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1 answer
33 views

Does all the adjacent vertices being on the same side of a hyperplane H containing the vertex imply H is a supporting hyperplane of the polytope?

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Paul Sinclair
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0 votes
3 answers
62 views

extending holomorphic function

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krm2233
  • 6,592
37 votes
8 answers
3k views

How to Evaluate the Integral? $\int_{0}^{1}\frac{\ln\left( \frac{x+1}{2x^2} \right)}{\sqrt{x^2+2x}}dx=\frac{\pi^2}{2}$

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polychroma
  • 2,860
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1 answer
273 views

How to prove that there is no other point except centroid which can divides in n three parts of equal area?

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Luv Gupta
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12 votes
3 answers
2k views

Mathematical book on "Maxwell" equation

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Daniele Tampieri
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0 votes
0 answers
15 views

The realation between product $\sigma$-ideals and product measures

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Gizerst Nanari
  • 97
0 votes
0 answers
15 views

The variational derivative of the metric tensor with respect to inverse metric.

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haj
  • 1
0 votes
0 answers
33 views

Is there a term for a function that never preserves a given structure?

Galen's user avatar
Galen
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1 vote
1 answer
62 views

Determining when the operator $f \mapsto if'$ is self adjoint with a specific domain.

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Ryszard Szwarc
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