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0 votes
0 answers
46 views

How to use local approximation spaces to build a global space via the Partition of Unity Method

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2 answers
13 views

A game requires 2 players opposite 2 other players, with 6 people available, how many distinct games can take place?

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0 answers
4 views

Why duality formula holds for L^2

1 vote
0 answers
49 views

Structure of multiplicative group of $\frac{\mathbb{Z}/n\mathbb{Z}[x]}{(f(x))}$ where $n$ is a product of 2 primes

1 vote
0 answers
26 views

Solving the system $a^x=(x+y+z)^y$, $a^y=(x+y+z)^z$, $a^z=(x+y+z)^x$, for $x$, $y$, $z$

3 votes
1 answer
954 views

What are the applications of convex sets?

6 votes
2 answers
239 views

Examples of continuous functions that are monotone along all lines

1 vote
0 answers
12 views

If $B \supseteq A$ are unitary commutative rings, $B$ is Noetherian, and there exists an $A$-linear retraction $r: B \to A$, then is $A$ Noetherian?

1 vote
0 answers
17 views

Is there always a sequential nature of time-stepping?

-3 votes
0 answers
19 views

Find the number $\theta_1$ and $\theta_2$ for an exponential function

0 votes
1 answer
8 views

Does the deterministic sequence dominated by a random sequence converges to zero in deterministic sense if the random sequence converges a.s.

-1 votes
0 answers
16 views

Find all $\alpha, \beta, \gamma$ such that $(C_{2^n}^n)^{\frac1n}\sim\alpha n^{\beta} \gamma^{n}$

1 vote
0 answers
13 views

What's the value of $\int \frac{f''(x)}{f(x)} dx$?

0 votes
0 answers
13 views

$X\setminus \{\overline x\}$ is meet irreducible in the lattice $O(X)$.

0 votes
0 answers
12 views

Examples of vertex & edge Lipschitz functions

1 vote
2 answers
57 views

About Compactness of Topological space

3 votes
1 answer
128 views

How to solve a given combinatorial problem?

0 votes
0 answers
23 views

What function can model a decay, whose linear slope smoothly changes around a certain x value.

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0 answers
15 views

Prove the following result on continuity.

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0 answers
11 views

Books on numerical integration

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0 answers
10 views

Concentration for balls and bins

1 vote
1 answer
17 views

stab(x) when the Symmetric group acts on the set of order k-tuples

2 votes
0 answers
33 views

Questions on integrating $\int_0^{\infty} \frac{x^{\frac{1}{3}}}{1 + x^2} dx$ using contour integrals

2 votes
0 answers
18 views

Distribution of sum of two uniformly distributed variables under addition modulo

2 votes
0 answers
1k views

Mobius band does not retract to boundary circle - specific part

1 vote
0 answers
29 views

Shapes with simple distance functions.

1 vote
1 answer
14 views

Can probe trajectories to compute Lyapunov exponents get "stuck in more regular orbits" after rescaling?

0 votes
4 answers
2k views

A rumor is spread randomly among a group of 10 people

3 votes
1 answer
47 views

What can I say about $P(B|A_1 \cap A_2)$ if I know that $P(B|A_1), P(B|A_2) \approx 1$?

6 votes
0 answers
106 views

A remarkable fact about the unit circle; looking for a shape with an even more remarkable fact.

0 votes
1 answer
94 views

Closed form solutions to a Gaussian equation

1 vote
0 answers
43 views

Caratheodory therem

0 votes
1 answer
30 views

Find the value of $ \prod_{k=0}^{n} \frac{\left( \left( \cot x \right)^{2^k} + 1 \right)^2}{\left( \left( \cot x \right)^{2^{k+1}} + 1 \right)}$

1 vote
1 answer
58 views

How to use only these definitions and assumptions to prove that $\nexists A$ such that $A\neq A$?

0 votes
0 answers
40 views

Prove that $U(40)/U_8(40) $ is cyclic but $U(40)/U_5(40)$ is not cyclic.

2 votes
1 answer
1k views

How to show a function is differentiable n times.

0 votes
1 answer
31 views

How to use Fourier method to solve the Poisson equation $-\Delta v=x y$?

5 votes
2 answers
260 views

Writing sums as integrals

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0 answers
10 views

Search for a general solution for a hyperbolic equation with a boundary condition on a sphere

0 votes
1 answer
12 views

Proving Linear Dependence from Cross Product Sum J

2 votes
0 answers
45 views

Elementary functions: Can an arithmetic operation be a composition?

8 votes
1 answer
2k views

Classification of lens space

0 votes
0 answers
22 views

Is this a typo in Fulton and Harris?

0 votes
0 answers
4 views

How do I apply the shooting method to a BVP with Robin's mixed condition in $t_0$ and $T$?

2 votes
1 answer
28 views

Compatibility of adjunctions for closed monoidal category

0 votes
0 answers
40 views

Find the inellipse of a convex quadrilateral given its axes direction

5 votes
1 answer
61 views

Convergence of Step Functions Generated by Uniformly Distributed Random Points

0 votes
0 answers
6 views

Similarity between variation and differential

-1 votes
0 answers
20 views

GEOMETRIC PROBABILITY. a square with side ɑ

1 vote
1 answer
27 views

Stationary action principle with a non-local action

0 votes
0 answers
10 views

Finding constant for asymptotic equality

1 vote
0 answers
53 views

Complex lattices and corresponding elliptic curves over $\mathbb C$

0 votes
0 answers
11 views

Isometrically immersed

0 votes
0 answers
32 views

A minimum problem involving three variables and four constraints

1 vote
0 answers
62 views

Elegant way to write $g(f(x))$

2 votes
1 answer
22 views

Mach equation algebraic manipulation

2 votes
0 answers
37 views
+100

Calculate $\sum_{n=1}^\infty (1-\alpha) \alpha^nP^{*n}(x)$

1 vote
0 answers
49 views

How to efficiently find a prime number-based canonical form for a finite, directed, multigraph?

0 votes
0 answers
4 views

Connection between minimal norm subgradient and steepest descent

1 vote
1 answer
29 views

Is the prefactor of Schouten tensor purposeful?

0 votes
0 answers
42 views

how was geometry founded?

0 votes
0 answers
21 views

How to prove that $X_n \stackrel{\text{a. s.}}{\rightarrow} 0$

0 votes
0 answers
10 views

Understanding invariant polynomials

1 vote
0 answers
39 views

How can to find to infinite series ? $\frac{1}{x} -\frac{1}{1!}\frac{1}{x+1}+\frac{1}{2!}\frac{1}{x+2}-\frac{1}{3!}\frac{1}{x+3}+...+\infty$

0 votes
0 answers
28 views

Solving system of equation

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0 answers
5 views

Permutation matrix as sum of orthogonal unit vectors

0 votes
0 answers
8 views

Solution of linear dynamical systems without Fourier transforming.

0 votes
0 answers
9 views

Limit of $\sum_{j=0}^n (1-j){n\choose j} \frac{1}{(n-1)^j}\left( \frac{n-j}{n} \right)^k$ as $n\to \infty$ (and $k=n$)

0 votes
0 answers
41 views

Linear independence of elements in $\mathbb F_5^3$

0 votes
0 answers
10 views

Product of Laplace-Beltrami eigenfunctions

0 votes
0 answers
8 views

What if a CP/PARAFAC tensor decomposition can be further decomposed, "recursively"?

0 votes
0 answers
17 views

For an analytic function $f$ in a domain $D$, if $\log|f|$ is harmonic in a neighborhood of $\partial D$ then $f\in C(\bar D)$.

0 votes
0 answers
9 views

Some inequalities resulting from the fact that a binomial coefficient divide another binomial coefficient

-1 votes
0 answers
21 views

Commutator Ideal of Non commutative ring

1 vote
0 answers
20 views

How to solve this 2D Laplace equation $-\Delta u=0 $ with $u(x,y)=y^{2}$ on boundary

0 votes
0 answers
6 views

Smallest eigenvalue of non-central Wishart matrix

0 votes
0 answers
32 views

On the definition of monomorphisms in arbitrary categories

0 votes
0 answers
13 views

Existance of a covering map from four circles to a bouquet of two circles

4 votes
1 answer
2k views

sum of two independent scaled noncentral $\chi$-squared random variables

0 votes
0 answers
19 views

Expectation of real number exponentiated by Poisson process

0 votes
0 answers
7 views

Confusion about replacing a variable in a expression of paprameters

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0 answers
20 views

Is here a mistake or can you explain me what orthonormal basis mean?

0 votes
0 answers
7 views

Theorem 5.2.1 of Systolic Geometry and Topology

2 votes
1 answer
25 views

Can we construct regular icosahedron dice with constant full-face sum?

0 votes
0 answers
15 views

Local convexity and $\lim_{s\rightarrow t} \frac{|\gamma(s)-\gamma(t)|}{L(\gamma|_{[t,s]})}$

3 votes
0 answers
37 views

Existence of an irrational number $x$ such that $\sum_{n=1}^{\infty} \sin (n!\pi x)$ converges

4 votes
0 answers
44 views

When is $ \sum_{k \in \mathbb{Z}}\left(\frac{\sin(k)}{k}\right)^{n}=2 \int_{0}^{\infty}\left(\frac{\sin(x)}{x}\right)^{n}dx$?

1 vote
2 answers
2k views

Proof of Closest Point Theorem in Hilbert Space

1 vote
0 answers
13 views

Clarification on model satisfaction definition and satisfaction over classes

6 votes
0 answers
44 views

Analysis of a deceptively simple infinite product: $f(n) = \prod_{j=2}^{\infty}\left(1-\frac{1}{j^n}\right)$

1 vote
1 answer
69 views

Differential operator on $L^p\left(0, 1\right)$

0 votes
0 answers
11 views

Improper multiple integral of vector valued function and corresponding Fubini's theorem

0 votes
3 answers
67 views

Proof using power series that $\lim_{x \to 0} \frac{\sin x-\arctan x}{x^{3}} = \frac{1}{6}$

0 votes
0 answers
33 views

Lebesgue integral over $\mathbb{R}$ with improper integrals

0 votes
0 answers
29 views

Why is the probability of drawing exactly one bad product in a sequence of three draws the same, regardless of which draw is the bad product?

4 votes
1 answer
3k views

Products of quotient topology same as quotient of product topology

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