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0 votes
0 answers
12 views

Conditional Cauchy-Schwarz Inequality

4 votes
2 answers
76 views

Showing $E\operatorname{Tr}(AAA^TA^T)=n^3 + 2n$

0 votes
1 answer
1k views

sequence with first difference and second constant ratio in first difference

2 votes
1 answer
45 views

Trying to calculate a limit with a finite product and WolframAlpha disagrees with my logic.

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0 answers
5 views

Relating the three forms of the simple group of order 25920

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0 answers
52 views

Euler's proof of $\frac{\pi}{6}=1-\frac{1}{2}-\frac{1}{3}+\frac{1}{4}+\frac{1}{5}+\frac{1}{6}-\cdots$

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0 answers
6 views

Integral of product of Bessel functions of different order

2 votes
0 answers
34 views

Preorder on topological spaces whose equivalence classes are the homeomorphism classses

1 vote
1 answer
62 views

Manifold of lines in $\mathbb{R}^3$

3 votes
1 answer
72 views

Prove $1\times 2+2\times 3+\ldots+(n-1)\times n = 2\binom {n+1}{3}$

2 votes
1 answer
46 views

Proving that convergence in RKHS implies pointwise convergence without using reproducing property

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0 answers
14 views

Is there a special name for symbolic ratios that share no common symbol in numerator and denominator

-1 votes
1 answer
19 views

The natural representation of the real group $G=SO(2)$ on $V=\Bbb R^2$ is irreducible.

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0 answers
10 views

Metrizing pointwise convergence of *sequences* of functionals in a dual space.

0 votes
1 answer
18 views

Prove that $\exists g \in SO(n)$ such that $gv_i = w_i$ for $i = 1, 2$ where all these vectors are O.N.

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0 answers
13 views

Disappearing constants in the generalized Argument Principle

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0 answers
36 views

Solving non-homegenous Ax=B when B is a 3x3 matrix

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0 answers
34 views

What is wrong with my answer: In metric space M, If A is dense in S and B is open in S, prove $ B \subseteq \overline{A \cap B}$

2 votes
0 answers
23 views

Proportionality of a system of polynomials

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0 answers
9 views

Finding a coefficient in a Laurent series of a function

0 votes
0 answers
23 views

Tensor Product $V \otimes W$ when $\dim V = 1$

2 votes
1 answer
26 views

Counting gap sizes in a subfamily of partitions

-1 votes
1 answer
50 views

Approaching a Divisibility Question

0 votes
0 answers
22 views

Change of basis and multivariate Taylor series in surface integral

1 vote
1 answer
262 views

How to evaluate $\int_{0}^{\frac{\pi}{2}} \ln ^{n}(\cos \theta) d \theta, \textrm{ where }n\in \mathbb{N}?$

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0 answers
30 views

Distance to "equal-distance-locus" within a lune

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0 answers
35 views

proof verification : every convex function is continuous.

3 votes
1 answer
2k views

How to rotate / transform a vector so that it is parallel to a plane?

0 votes
1 answer
43 views

Calculation of $\int_0^{\infty} \frac{x^{2p+1}}{(1+x^2)^2}dx$ for $|p|<1$.

0 votes
0 answers
61 views

How to alter my differential equations to force an abrupt decrease in the solution?

1 vote
1 answer
20 views

Smallest finite group which cannot be decomposed into a solvable piece and a perfect piece

0 votes
0 answers
86 views

Inequality $\frac{1}{\sqrt{ab+2}}+\frac{1}{\sqrt{bc+2}}+\frac{1}{\sqrt{ca+2}}\ge \frac{2\sqrt{3}}{\sqrt{a+b+c+abc}}.$

0 votes
0 answers
34 views

Cannot prove these two statements about Bernoulli sequence

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0 answers
22 views

irreducible representation of the circle group $\mathbb S^1$

0 votes
0 answers
7 views

Elementary proof of Bott periodicity

0 votes
1 answer
15 views

central limit theorem, convergence in distribution, convergence of integrals

1 vote
0 answers
23 views

Problem about bridge hand distribution

2 votes
0 answers
26 views

Order of operations clarification

-1 votes
0 answers
16 views

Lattices diagrams

1 vote
1 answer
45 views

Unbounded slack variables in linear programming problem

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0 answers
15 views

How to solve this continuous control problem?

-1 votes
0 answers
32 views

Simplify the combinatorical expression

1 vote
0 answers
35 views

Stochastic Fubini and Hawkes process

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0 answers
16 views

Showing $E[\operatorname{Tr}(AAA^TA^T)]<E[\operatorname{Tr}(AA^TAA^T)]$ for Gaussian $A$

1 vote
0 answers
12 views

Understanding the condition of the bounded variable algorithm in the linear programming

0 votes
0 answers
8 views

Is a function in $C^1 _0(D)$ times a function in $H^1 _{loc} \cap L^2 (D)$ in $C^{\infty}_{0}$?

1 vote
1 answer
20 views

There exists a unique stable limit cycle around $(0,0)$

0 votes
1 answer
29 views

Need help understanding proof that $\hat{x} (\hat{A}) = \sigma(x)$

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0 answers
10 views

Error of approximating a Gaussian integral by a series

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0 answers
7 views

The probability to visit a state for the first time after n steps in a markov chain

0 votes
0 answers
16 views

Expected number of times a 3-d random walk will return to the origin

1 vote
0 answers
63 views

Limit of a parametric function: $\lim_{n\rightarrow\infty} \prod_{i=1}^{n} \left ( 1- 2^{-i}t \right)^{-\frac{1}{2}}$

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0 answers
9 views

Intersection of two straight lines in a spherical geometry

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43 views

Associative binary operation on the positive reals

1 vote
0 answers
33 views

Size of shadow of set system

0 votes
0 answers
16 views

Singularities inside closed path

-1 votes
0 answers
17 views

Operator norm of product of square matrices preserved by permutation

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0 answers
12 views

Derivative of $X(X^\top X)^{-1/2}$ with respect to the matrix X

5 votes
2 answers
553 views

Finding $\lim_{n \to \infty} \int_{(0,\infty)} \frac{n \sin (x/n)}{x(1+x^2)}dx$ via DCT

0 votes
0 answers
21 views

Brezis' exercise 8.23.5: how to find the best constant $C_k$ such that $\|u\|_{L^{\infty}} \leq C_k\|f\|_{L^{\infty}}$?

0 votes
0 answers
12 views

Time reversal of Brownian motion: Validation of a general formula

0 votes
0 answers
22 views

$D(p||q) \geq \frac12(2(p-q))^2,\,\,\,p\geq q$?

1 vote
1 answer
29 views

Connection between permutations and rank–nullity?

3 votes
1 answer
92 views

Closed form for the $n$-th derivative of $\csc^2$?

0 votes
0 answers
19 views

Tiling: Fewest square tiles to cover a non-regular polygon

1 vote
0 answers
14 views

Map from Compactification to Original Space

4 votes
3 answers
140 views

How to define this function so that it is continuous?

2 votes
1 answer
58 views

What is known about the approximation constant?

0 votes
0 answers
14 views

Am I using the properties of my matrix correctly in these inequalities?

0 votes
0 answers
8 views

Solve this generalized discrete optimization problem

3 votes
1 answer
136 views

Every finite integral domain is a field (why is it commutative?)

3 votes
1 answer
47 views

What is the expected number of draws until a box of balls is empty? The only known information is the expected number of balls removed in each round.

0 votes
0 answers
13 views

Determine relative position from projected angles and distance

0 votes
0 answers
22 views

why product measure 1/N

3 votes
0 answers
30 views

Similarity of real-valued functions

0 votes
0 answers
9 views

Using convolution to derive first passage probability

0 votes
0 answers
19 views

PDE on the probability that the brownian motion stays in [a,b]

0 votes
0 answers
19 views

Selecting and matching 3 and 6 distinct numbers yield different numerators

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0 answers
16 views

Let T be a tree with j leaves. Let m be a positive integer such that 2k $\geq$ j. Show that there exist k paths such that:

0 votes
0 answers
19 views

Canonical chart for parallelizable manifold

0 votes
2 answers
31 views

Limit of $f(x,y)$ when $x^2+y^2$ tends to $\infty$

1 vote
0 answers
35 views

Integral Relation

1 vote
0 answers
20 views

Brownian motion construction on the unit sphere in Oksendal text book

1 vote
1 answer
21 views

5-cell "4D tetrahedron"

1 vote
1 answer
24 views

Finding the Vector $v$ for a Given Householder Matrix Transformation of Non-Collinear Vectors $a$ and $b$

0 votes
0 answers
13 views

Finding slope of a given point on the elliptic curve given the points x and y coordinates

1 vote
0 answers
15 views

General solution to $\frac{\partial^n}{\partial x^n}u(x,y)=\frac{\partial^m}{\partial y^m}u(x,y)$

0 votes
0 answers
19 views

Moment estimator of mixture distribution

0 votes
0 answers
10 views

Run the depth-first search algorithm on the following graph. Room has been left in the vertices for the discovery and finish times and the predecessor

0 votes
0 answers
7 views

Can I use logistic regression models for all steps in a mediation analysis

4 votes
1 answer
36 views

Some problems related to Achim Klenke: Probability theory 3.1.2

1 vote
1 answer
27 views

How do the eigenvectors of the coefficient matrix of a first order ODE system motivate this change of variables

2 votes
1 answer
113 views

Commutator of a connected semi simple Lie group

2 votes
0 answers
13 views

How to linearize this PDE system?

4 votes
0 answers
44 views
+50

How to show that is unique asymptotic stable

5 votes
0 answers
21 views

Does a 3D random walk visit infinitely many primes almost surely?

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