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Top Questions

3 votes
1 answer
102 views
+100

Isomorphism between linear functionals (L(R^2)) and R^2

0 votes
1 answer
82 views
+50

Isomorphism between $H_{(s)}$ and $L^2$

9 votes
0 answers
125 views
+100

Relation between local homeomorphism and homological dimension

5 votes
0 answers
97 views
+100

Database for properties of categories

3 votes
1 answer
147 views
+50

Linear Analysis Chapter 2 Exercise 16

2 votes
6 answers
215 views
+100

Maximum value of $2$ variable function $f(u,v)=\frac{\left(1-\sqrt{uv}\right)^2}{\frac{1-u^2}{2u}+\frac{1-v^2}{2v}}$

-5 votes
0 answers
124 views
+50

A brick sliding in an horizontal plane after an initial push (under Coulomb's dry friction) - closed form solutions validation?

2 votes
1 answer
124 views
+50

Designing a Proof by Simulation

3 votes
1 answer
68 views
+50

Speed of Convergence in Different Situations

2 votes
1 answer
142 views
+100

Looking for help with geogebra animation applets

1 vote
0 answers
102 views
+50

$q$-Pochhammer at root of unity

4 votes
1 answer
81 views
+50

Is the Short-Time Fourier Transform an Isometry in $L_2(\mathbb{R}^d)$?

7 votes
1 answer
210 views
+50

Is there a non-trivial arithmetic progression of positive integers such that every number contains the digit $2?$

5 votes
1 answer
434 views
+500

Let $f\colon (a,b)\to \mathbb{R}$ be nondecreasing and continuous. If $E=\{x\in (a,b)\mid f'(x)\text{ exists and } f'(x)=0\}$, then $\lambda(f(E))=0$

0 votes
0 answers
91 views
+100

Problem calculating simmetrized product of Ricci tensor

7 votes
1 answer
230 views
+50

How to prove $(F\ast\sin)(x)=-\sin(x)$, where $F(x)=\frac{1}{2}|x|$?

3 votes
0 answers
96 views
+100

Find the ideal class group of $\mathbb{Q}(\sqrt{-5})$ by using the factorization theorem

0 votes
0 answers
169 views
+200

How does the quotient affect the complex valued metric?

12 votes
2 answers
493 views
+50

Computing the integral $ \int_0^{\infty} e^{-\phi^2+\phi}\cdot \phi^{2} \ln(1-2x\cos\phi+x^2)\, d\phi. $

4 votes
1 answer
86 views
+50

Is the category of undirected graphs an infinity-pretopos?

-3 votes
1 answer
251 views
+50

Like Ramanujan : Strange limit and a remarkable behavior .

1 vote
0 answers
34 views
+50

Stochastic Simulation - Simulation from the Marginal Distributions

3 votes
0 answers
67 views
+50

Find a fundamental unit by using the continued fraction

-2 votes
0 answers
91 views
+50

Given the function $f: \mathbb{C} \to \{ x + iy \mid (x > 0) \vee (x = 0 \land y \geq 0) \}$ with the rule

3 votes
1 answer
82 views
+50

What is the index $ (G : C_G(B)) $?

0 votes
1 answer
142 views
+50

Describe all non-isomorphic groups of order $57$

4 votes
0 answers
94 views
+50

Write the conformal mapping that maps the region and sketch both regions as well.

0 votes
1 answer
82 views
+100

How to find the volume under this composite of functions?

7 votes
1 answer
428 views
+250

Functional completeness over a structure

4 votes
1 answer
94 views
+50

Probability Generating Functions for Coin Flip Problems?

5 votes
1 answer
80 views
+200

Calculate the ideal class group of $K=\mathbb{Q}(\sqrt[3]{11})$

5 votes
1 answer
124 views
+100

Least number of circles required to cover a continuous function on a closed interval.

1 vote
0 answers
91 views
+50

Sign permanence of locally Lipschitz functions calculated on a sequence

2 votes
2 answers
110 views
+100

Find the Cosine of the Angle Between the Plane $(MND)$ and the Plane $(ABC)$

4 votes
3 answers
100 views
+50

Using the Laplace transform, solve the system of linear differential equations with constant coefficients

4 votes
0 answers
122 views
+100

An arrangements of the hyperplanes.

12 votes
1 answer
293 views
+50

Number in Base b as Dot Product

3 votes
1 answer
100 views
+50

Problem 237 "Mathematical Quickies:270 Stimulating Problems with Solutions" Particle Movement

2 votes
1 answer
48 views
+50

What is the fundamental group of the space $X_n=SL(n, \mathbb{R})/SL(n, \mathbb{Z})$

0 votes
0 answers
57 views
+100

Two's complement multiplication decomposition

2 votes
2 answers
91 views
+100

'deducing' a bound using the first order taylor series. How to make it more precise?

0 votes
0 answers
25 views
+50

Self-Organizing maps: why input vectors (x) are dependent on steps (t)?

5 votes
0 answers
96 views
+50

Conjectures involving $\Lambda(n)$

1 vote
0 answers
29 views
+50

Which graphs can be represented as adjacencies in a rectangular subdivision?


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