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0 votes
0 answers
12 views

There are $5$ boxes numbered from $1$ to $5$. There is $1$ Red and $2k$ black balls in the $k^{th}$ box

0 votes
1 answer
31 views

Conceptual confusion regarding raising and lowering index

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0 answers
4 views

Exercise 7.2 M. Isaacs' Character Theory

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0 answers
7 views

Looking for a geometric construction of point $(x_1y_2+x_2y_1, a x_1x_2+y_1y_2)$ from $(x_1,y_1)$ and $(x_2,y_2)$

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0 answers
14 views

How to prove that $ \sum_{n=1}^{\infty} \frac{(-1)^{[\log n]}}{n}$ diverges?

1 vote
0 answers
5 views

$f(x)=x^{3}-3 x+a$. Given that it has $3$ integer roots $\alpha, \beta, \gamma$. Find all possible values of $a$.

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4 views

$\vec v_0,...,\vec v_{n-1}$ is a basis in a linear space. $A\vec v_i=\vec v_{(i-1)~mod~n}+\vec v_{(i+1)~mod~n}$. Find eigenvalues of $A$.

1 vote
0 answers
13 views

Show that $f(t) =a-2(N-1)|t|^{-N^{\prime}}$ is bounded from below

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0 answers
2 views

Problem on studying $\sum_{n\geq 1}\frac{n^{\log{n}}}{\sqrt{n!}}\frac{\tan{n}}{|\tan{n}|+n}$

22 votes
2 answers
410 views

Are these equations "properly" defined differential equations? (finite duration solutions to diff. eqs.)

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0 answers
7 views

Is it possible to define this object using Kripke-Joyal Semantics

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0 answers
5 views

Factoring $1 + 2\cos(\theta_1) x + 4i\sin(\theta_1) \cos(\theta_2) x^2 + x^3=0$

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0 answers
6 views

Any covering space of $\mathbb R\mathbb P^2\vee \mathbb R\mathbb P^2$ must be an union of spheres and projective spaces

0 votes
1 answer
11 views

Covariance in an urn model without replacement

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0 answers
5 views

How to calculate the inverse CDF if I wish its division delta of division delta to be the same?

1 vote
0 answers
9 views

Fast approximation for bivariate normal cumulative distribution function

2 votes
2 answers
61 views

Probability problem my AP statistics teacher can't solve

0 votes
0 answers
6 views

I need an algorithmical way to randomly partition a rectangle into smaller rectangles

1 vote
0 answers
8 views

Finding which integrals are equal to the given triple integral

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1 answer
25 views

Does there exist a non positive matrix B such that trace(AB) is not positive if A is not positive?

4 votes
0 answers
26 views

Using change of coordinates to find the exact value of an integral

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0 answers
4 views

How to calculate percentil from percentil subresults

1 vote
0 answers
13 views

Proof by exhaustion under Intuitionism

1 vote
1 answer
24 views

Is there $\sigma_\infty$ such that $\sigma_\infty$ is a subsequence of $\sigma_n$ for all $n \in \mathbb N$?

2 votes
1 answer
55 views
+50

Calculating true airspeed: Horseshoe Heading Technique

2 votes
0 answers
19 views

Are the only quadrilaterals satisfying this symmetric relation rectangles?

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0 answers
3 views

Finite full transformation monoid modulo its units

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1 answer
24 views

Odd field extensions, possible?

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0 answers
11 views

Converse of Urysohn lemma

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0 answers
12 views

Abel Summation for d(n)/n

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0 answers
6 views

Uniform convergence on compact sets when derivatives go to zero

0 votes
1 answer
13 views

Strong law of large numbers for p.w. uncorrelated integrable random variables with $M:=sup_{k}Var(X_k)<\infty $

0 votes
2 answers
14 views

Find n evenly spaced points on circle with radius r

1 vote
1 answer
20 views

If a Fourier series converges uniformly to a limit function, is the limit always the same as the original function?

1 vote
0 answers
8 views

An algebra given by generators and relations and an algebra generated as a subalgebra by some elements. Are they isomorphic?

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0 answers
11 views

Is the limit of this sequence Lipschitz-continuous?

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1 answer
20 views

Substituting an ansatz in a ODE in maple or mathematica

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0 answers
7 views

Variance for random variable with known density

0 votes
1 answer
14 views

Inverses in the spherical interpetration of higher homotopy groups

1 vote
0 answers
30 views

Exercise 4, Section 32 of Munkres’ Topology

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0 answers
7 views

Projections, dense embeddings and quotient forcing

3 votes
0 answers
152 views

Attempting to restate the question of whether the collatz conjecture has a nontrivial cycle as a combinatorics problem

1 vote
0 answers
40 views

Expected number of rounds to reach an intersection size

0 votes
1 answer
22 views

Clarifying proof of Kunze’s theorem 3 in chapter 2

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1 answer
15 views

Proof of Karnaugh(k-map) method

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0 answers
8 views

Bound on Cardinality of the set using Probability

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0 answers
26 views

Prove the symmetry property of weights in the Newton-Cotes formula of quadrature

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0 answers
35 views

gaussian integral without the error function

-1 votes
0 answers
9 views

Inequalities for the Beta function

2 votes
1 answer
20 views

What are some techniques to prove that a set of numbers is rationally independent?

1 vote
0 answers
21 views

Entire function that omits a value reaches every other value infinitely many times

1 vote
1 answer
13 views

Is it a problem that we have to *choose* reference measure in Likelihood function?

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0 answers
3 views

How do I calculate the dependency between random variables for a Bayesian network?

0 votes
0 answers
10 views

Values in the character table

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0 answers
10 views

Number of solutions of equation $\tan^{-1}(2\sin x)=\cot^{-1}(\cos x)\;$ in $[0,10\pi]$.

0 votes
0 answers
6 views

Volume of a solid of revolution: check and information

-1 votes
0 answers
23 views

Find $\frac{1}{16 \times 20 \times 24}+\frac{1}{20 \times 24 \times 28} + \cdots + \frac{1}{72 \times 76 \times 80}.$

0 votes
1 answer
19 views

2 Levi Civita Summation

0 votes
0 answers
19 views

polynomial with root 1 with multiplicity at least n

6 votes
1 answer
138 views
+50

Regarding the winding number

0 votes
2 answers
1k views

Proving question (Differentiation)

1 vote
0 answers
23 views

Reconstruct a Euclidean motion from its action on a curve

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0 answers
8 views

How to determine how many randomly distributed rays should strike a stack of plates?

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0 answers
13 views

Large argument expansion of Bessel function with error explicit in order dependence

2 votes
1 answer
28 views

A better lower bound for $f(t):=((t-a)^2+b)^2+(t-c)^2$ on $[0,\infty[$ where $a,b,c>0$ and $c>a$

0 votes
0 answers
9 views

Prove that $A[b_1,...,b_n]$ is a finitely generated A-module if $b_i's$ are integral over A

2 votes
0 answers
8 views

Symmetric monoidal categories and modules over the unit

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0 answers
7 views

Gaussian-like Gibbs Distribution

0 votes
1 answer
51 views

Why Of course such a group must be necessarily cyclic?

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0 answers
13 views

Diagonizable linear operators and invariant subspaces.

0 votes
0 answers
21 views

What is the gauge theory field-configuration moduli space?

1 vote
0 answers
18 views

Definition of static spherically symmetric spacetime as fiber bundle

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0 answers
7 views

Determine if the point-estimation is unbiased [Bias of an estimator]

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0 answers
4 views

Negatively curved pair of pants approximation of a tripod

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0 answers
6 views

Triangulation of interior of piecewise smooth, simple, closed plane curve

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0 answers
12 views

Did I calculate these problems on the convergence of power series correctly?

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0 answers
28 views

Every Cayley Digraph of $\mathbb{Z}_{n}$ is isomorphic to a Metacirculant digraph

0 votes
0 answers
12 views

Cross-covariance term of linear stochastic differential equation

0 votes
1 answer
26 views

Pullbacks, Terminal objects and Products: proof of a proposition

1 vote
0 answers
10 views

Multi-variable Rational Function that is always between the largest and second largest of the arguments.

2 votes
1 answer
20 views

How can I build a set using the rule "exclude A or B" in set theory?

1 vote
0 answers
22 views

How do I prove that this sequence is increasing?

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0 answers
14 views

analysing a numerical method

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0 answers
11 views

Real analyticity of function of two variable

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0 answers
10 views

Weak convergence against upper invariant measure

1 vote
0 answers
14 views

Minimizing error for $A$ in $Ax=b$ if $x$ and $b$ are matrices

3 votes
0 answers
32 views

A navigation problem: Is the path of the ship straight or curved?

0 votes
0 answers
5 views

Power-Method convergence proof for not-diagonalizble Matrix

1 vote
0 answers
3 views

Variational Lower Bound with latent SDE

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0 answers
10 views

Global minimization Problem for $f(x) = \frac{|| Ax+b||^2}{c^Tx+d}$

2 votes
0 answers
10 views

Taking multiple optimization steps on the same trajectory not well justified.

2 votes
0 answers
10 views

Discrete Holonomy: Tapp's Differential Geometry book. Exercise 6.6

2 votes
1 answer
74 views
+50

Graphical model - log transformed covariance matrix

3 votes
2 answers
48 views

Coherence in closed monoidal categories

1 vote
0 answers
9 views

verifying markov property

2 votes
3 answers
60 views

Proof verification: If $\gcd(n,a) = 1$ and $n\mid ab$ then $n\mid b$.

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