Question

Is there a class of functions that have a cyclical or constant derivative?

score 50 · Answer 1 · 2026-03-25 12:51:58

50

Views

Is there a class of functions that have a cyclical or constant derivative?

Published on 25 Mar 2026 - 12:51

score 210 · Answer 2 · 2019-11-07 21:06:49

210

Views

Polynomials can approximate the identity (proof)

Published on 07 Nov 2019 - 21:06

score 146 · Answer 3 · 2026-03-25 09:43:13

146

Views

How to expand $b\int_0^\infty \operatorname{sech}^2\big(b\cdot f(x)\big)\,dx$ for large $b$?

Published on 25 Mar 2026 - 9:43

score 1.7k · Answer 4 · 2019-11-16 12:36:47

1.7k

Views

Does every vector space have a Hamel basis ? And is every linear comination representation finite?

Published on 16 Nov 2019 - 12:36

score 102 · Answer 5 · 2019-11-16 18:51:12

102

Views

Instantaneous smoothing effect of sphere-valued maps

Published on 16 Nov 2019 - 18:51

score 1.7k · Answer 6 · 2019-11-16 22:43:54

1.7k

Views

An example for a seminorm on $\mathbb{R}^n$

Published on 16 Nov 2019 - 22:43

score 167 · Answer 7 · 2019-11-17 08:53:36

167

Views

On the invertibility of basis function matrix for interpolating functions

Published on 17 Nov 2019 - 8:53

score 557 · Answer 8 · 2026-03-26 01:02:39

557

Views

Taylor series to approximate derivative with difference quotient function

Published on 26 Mar 2026 - 1:02

score 137 · Answer 9 · 2019-11-22 17:53:55

137

Views

Multi-dimensional uniform approximation results

Published on 22 Nov 2019 - 17:53

score 86 · Answer 10 · 2019-11-26 14:14:11

86

Views

How to apply the Stone-Weierstrass-Theorem to nonlinear systems? How to integrate Volterra kernels for TI systems?

Published on 26 Nov 2019 - 14:14

score 85 · Answer 11 · 2026-03-25 11:09:54

85

Views

Orthogonal Polynomials approximation and $L^2(\mathbb(R))$

Published on 25 Mar 2026 - 11:09

score 344 · Answer 12 · 2019-12-13 03:42:36

344

Views

Can $\sin(1/x)$ be approximated pointwise by polynomials over $(0,\infty)$

Published on 13 Dec 2019 - 3:42

score 130 · Answer 13 · 2019-12-16 23:05:36

130

Views

Asymptotic approximate solution of the parabolic cylinder differential equation

Published on 16 Dec 2019 - 23:05

score 26 · Answer 14 · 2026-03-25 03:02:53

26

Views

Approximation of functions of 2 variables by multiplication of unidimensional functions

Published on 25 Mar 2026 - 3:02

score 227 · Answer 15 · 2019-12-22 22:06:08

227

Views

Does convergence of Bernstein polynomials imply convergence of its coefficients?

Published on 22 Dec 2019 - 22:06

List Question

Is there a class of functions that have a cyclical or constant derivative?

Polynomials can approximate the identity (proof)

How to expand $b\int_0^\infty \operatorname{sech}^2\big(b\cdot f(x)\big)\,dx$ for large $b$?

Does every vector space have a Hamel basis ? And is every linear comination representation finite?

Instantaneous smoothing effect of sphere-valued maps

An example for a seminorm on $\mathbb{R}^n$

On the invertibility of basis function matrix for interpolating functions

Taylor series to approximate derivative with difference quotient function

Multi-dimensional uniform approximation results

How to apply the Stone-Weierstrass-Theorem to nonlinear systems? How to integrate Volterra kernels for TI systems?

Orthogonal Polynomials approximation and $L^2(\mathbb(R))$

Can $\sin(1/x)$ be approximated pointwise by polynomials over $(0,\infty)$

Asymptotic approximate solution of the parabolic cylinder differential equation

Approximation of functions of 2 variables by multiplication of unidimensional functions

Does convergence of Bernstein polynomials imply convergence of its coefficients?

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