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0 votes
1 answer
31 views

Find the number of numbers with 5 digits that don't have the sequence 17 within them

0 votes
1 answer
55 views

Does an infinitesimal above an number e.g., N.0(w/ 0s repeating)1 equal the number below? Similar to 0.9... equal 1

0 votes
0 answers
11 views

Why $y$ is a rational integer?

2 votes
2 answers
97 views

Evaluating $ \int_0^1 \frac{x^a - 1}{\ln{}x} dx$

-1 votes
1 answer
38 views

How to find a closed-form expression for the sequence $x_n = x_{n-1}(1.1) + 100$

1 vote
1 answer
19 views

p x q business product sales for multiple divisions/geographies

3 votes
0 answers
77 views

Mistake in faulty proof that Brownian Motion is non-negative almost surely.

0 votes
0 answers
12 views

Binomial Summation that Yields Factorial

0 votes
1 answer
18 views

Show that $f(\rho)=0$ for any modular form of weight $k$ if $\rho=e^{\frac{2\pi i}{3}}$ and $3\nmid k$.

1 vote
1 answer
19 views

Connection between Leibniz formula and geometric interpretation of determinants

0 votes
0 answers
70 views
+100

How to show the quadratic integer ring O is not a UFD.

13 votes
2 answers
418 views

Translation of John Nash's 1962 Navier-Stokes paper

4 votes
2 answers
48 views

Are all nilpotent matrices strictly upper triangularizable (over the complex and real fields)?

0 votes
1 answer
79 views

Differential equation notation

1 vote
3 answers
969 views

Partial Fraction with Unknown Constants

1 vote
0 answers
53 views

How to integrate $\iint_{-\pi/2}^{\pi/2}\sin(x+y)dxdy$

0 votes
0 answers
3 views

relative commutant of the cross product of a von Neumann algebra

3 votes
2 answers
46 views

Find $\lim\limits_{x \to \infty} \int_{0}^1 \dfrac{xt^x}{1+t^x}dt$

0 votes
0 answers
7 views

A way to order trees produced by TREE(3) and find the last tree (or at least count nodes in that tree)

0 votes
1 answer
52 views

What is the meaning of the letter L in the L1-norm and l2-norm metric?

3 votes
3 answers
142 views

How to prove that the axis of an ellipse are perpendicular

1 vote
1 answer
39 views

Misunderstanding of Fourier series and differential equation

1 vote
2 answers
48 views

Decomposition of compact subset of a manifold

0 votes
0 answers
5 views

Can a SDE hit a point where its covariance is not PD?

-2 votes
0 answers
55 views

How were the $x$ and $y$ coordinates of intersecting point calculated?

1 vote
0 answers
21 views

Prove with induction if $A= \begin{pmatrix}2&1\\-1&0 \end{pmatrix}$ $\forall n \in \mathbb{N}$ $A^n= \begin{pmatrix} n+1&n\\-n&1-n \end{pmatrix}$

0 votes
0 answers
14 views

How to calculate angles in a parallelogram?

0 votes
0 answers
16 views

Unsure about how to get intervals for roots for intermediate value theorem

1 vote
1 answer
30 views

GM and AM convex cone

4 votes
3 answers
106 views

If $a_1,\ldots, a_n$ are numbers such that $a_1^k+\cdots + a_n^k = x$ for $1\leq k\leq n$, determine the product $a_1\cdots a_n$ in terms of $x$.

0 votes
0 answers
15 views

Estimate the error if $P_2 = 1-\frac{x^2}{2}$ is used to to estimate the value of $\cos(x)$ with $x<0.1$

0 votes
0 answers
21 views

How to solve following LPP using graphical method.

1 vote
1 answer
11 views

Proving that $\text{rank}(\phi \circ \psi) \geq \text{rank}(\phi) + \text{rank}(\psi) - n$

5 votes
0 answers
142 views
+50

Can $!1+!2+!3+\cdots+!n$ be a perfect power?

6 votes
0 answers
117 views
+50

Is $10^n+n^{10}$ prime for some integer $n \ge 2$?

2 votes
1 answer
47 views

Inclusion functor is final?

0 votes
1 answer
33 views

If $X$ is a simply-connected $n$-dimensional CW complex, then any $f : X \rightarrow \mathbb RP^{n+1}$ is homotopic to a constant map

1 vote
1 answer
22 views

Negation of a statement validation

1 vote
0 answers
21 views

Minimum of ratio of cosine functions

0 votes
0 answers
25 views

Equivalence relationship defined over membership of a in halo of b. (Non-Standard Analysis, Monads, Halos)

5 votes
1 answer
426 views

Prove that the expression is identically zero.

1 vote
1 answer
24 views

Confusuion with trivial solution to a system of equations

0 votes
0 answers
16 views

Matching probelm in a recursive way

-1 votes
0 answers
19 views

Help me find the closed form formula for this a(n) = 4*a(n-3) - a(n-6) the values are 1,3,11,41,153... for values of n that are 0,3,6,9,12...

1 vote
1 answer
45 views

What difference does it make if many differential equations can't be solved analytically?

2 votes
0 answers
50 views

Proving an integral inequality involving Lipschitz functions

0 votes
0 answers
3 views

Tomita algebra associated to nsf weight on von Neumann algebra

0 votes
0 answers
19 views

Does correlation of inverse covariance matrix implies conditional independence?

0 votes
0 answers
13 views

Sensitivity to noise in nonlinear parameter estimation

0 votes
1 answer
219 views

$(k,l)$ shuffle and wedge product

0 votes
1 answer
29 views

MLE Estimation - Non-Differentiable Log Likelihood Function

1 vote
2 answers
2k views

Complement in $\Bbb C$ of a compact subset of $\Bbb R$ is connected.

-1 votes
0 answers
12 views

Question on isolating ${a}$ in the given equation: ${ac\:=\:v^a\left(v^{a-2}-1\right)}$

3 votes
1 answer
85 views

Proof of statement with modular arithmetics

1 vote
0 answers
51 views

Does the following Integral have a solution in elementary functions?

0 votes
1 answer
59 views

Limit of $\lim _{x\to \infty }\left(\frac{2^{\frac{1}{10}\left(log_2x\right)^{\frac{1}{2}}}}{log_2x}\right)$

11 votes
1 answer
763 views
+500

What is the connection between algebraic groups and topoi?

3 votes
2 answers
71 views

Given $H \leq G$, prove a group $C(x) \leq G$ and $N_G(H) \leq G$

0 votes
0 answers
23 views

What is the projected area of a solid onto an axis of rotation?

1 vote
1 answer
46 views

Etale Stalks of the Hom sheaf

0 votes
0 answers
18 views

Involution on $l^1(G)$

1 vote
0 answers
21 views

Strong convergence of compact operator

0 votes
0 answers
45 views

$\int_0^\infty \frac{\ln x}{(1+e^{x})^2}dx$ by contour integration

0 votes
0 answers
15 views

General solution for the $n$-dimensional wave equation using inverse Fourier transform

0 votes
0 answers
31 views

Question on the Length of Modules

-1 votes
0 answers
9 views

Prove that the sum of the probabilities of all state paths of same length is equal to 1.

4 votes
1 answer
76 views

Compact set $K_\epsilon\subset B$ such that $\ell^*(B\setminus K_\epsilon) \leq \epsilon$

1 vote
0 answers
21 views

LU decomposition of banded matrix with partial pivoting

0 votes
0 answers
8 views

Existence of a sequence of deterministic measurable kernels (Skorohod Integral and Chaos Expansion)

0 votes
0 answers
21 views

Concatenating consecutive numbers to find primes? (General number theory question)

3 votes
1 answer
58 views

Does the sequence $x_n := n^2/\sqrt{n^6+1} + n^2/\sqrt{n^6+2} + . . . + n^2/\sqrt{n^6+n}$ converge? If it does, what value does it converge to?

0 votes
0 answers
14 views

Confusion about the definition of a nonlinear recurrence relation and recurrence relation with fractional subscript.

0 votes
0 answers
27 views

Proportion of time a sum of Gaussians is above 0

0 votes
0 answers
27 views

How to find out a particular set of permutations cannot generate the whole symmetric group $S_n$

0 votes
0 answers
19 views

Explicit 2-cocycle on a Hopf algebra

1 vote
1 answer
8 views

Equation of a sequence of a pyramid of glasses. Trying to find the sequence equations for the fill rates and number of pours.

1 vote
0 answers
17 views

Derivative of a Matrix equation

0 votes
0 answers
39 views

Definite Integral $\int \tanh(a\cdot \operatorname{atanh}(x)+b)\,\mathrm dx$

1 vote
0 answers
30 views

Find some subgroups of the symmetric group $S_n$ having more than $k$ generators

1 vote
0 answers
14 views

How to integrate function gradients over plane?

4 votes
1 answer
155 views

Intersection of nested compact sets

0 votes
0 answers
17 views

EA and BA are abelian groups?

1 vote
0 answers
13 views

Reference for the bordered Hessian method

2 votes
1 answer
43 views

Identify $d$ heavy coins where $d$ is unknown.

1 vote
0 answers
30 views

Terminology for "transposition" of monomorphism to epimorphism in simplex category?

3 votes
0 answers
53 views

How to proof the derivative is continuous

1 vote
0 answers
16 views

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

1 vote
0 answers
17 views

Van der Waerden's theorem through Ramsey's Theorem

0 votes
0 answers
16 views

Resources for Abelian surfaces

1 vote
0 answers
13 views

Proving Dirichlet character is primitive

0 votes
1 answer
56 views

$\frac{2}{x_1+1} + \frac{2}{x_2+1} + \frac{2}{x_3+1} + ... + \frac{2}{x_n+1} \leq n$

4 votes
1 answer
2k views

Distinguishing $SU(n)$ from $SO(n)$

1 vote
0 answers
11 views

How to find outage probability in wireless communication

1 vote
1 answer
21 views

Expectation of removing subtree

1 vote
0 answers
10 views

Almost internal point which is not internal

0 votes
0 answers
20 views

Prove there is homography between a line and algebraic set

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