List questions from functional-inequalities

Published on 06 Dec 2020 - 0:18

71

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Proving an inequality involving $L_2(\Omega)$ norms of $L_2$ and $C^{\infty}$ functions

Published on 19 Dec 2020 - 5:47

107

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Explicit bounds of the error in Stone weierstrass theorem

Published on 19 Dec 2020 - 15:44

433

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prove a challenging inequality or find a counterexample to it

Published on 30 Dec 2020 - 22:49

73

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Solutions of the functional inequality $f(x)\geq f(y)(1+x-y)$

Published on 07 Jan 2021 - 8:05

61

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Prove this functional inequality

Published on 11 Jan 2021 - 7:06

180

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Find all the functions $f:\left[0,1\right]\rightarrow\mathbb{R}$ so that ${x}'f\left(x\right)\geq 2xf\left(x^{2}\right)$

Published on 21 Jan 2021 - 14:37

54

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A general question about inequalities

Published on 09 Feb 2021 - 14:38

101

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functional calculus on C*-algebra and majoration of $||f(A+B)-f(A)||$

Published on 24 Feb 2026 - 10:19

39

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Possible inequalities with $\min, \max, \inf, \sup, \mathrm{abs}$ on vector space elements

Published on 23 Feb 2021 - 13:01

313

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Prove that $0\le\int_0^1\log(u){\rm d}x+\frac1{2\pi^2}\int_0^1\frac1{u^2}\left(\frac{{\rm d}u}{{\rm d}x}\right)^2{\rm d}x$

Published on 28 Feb 2021 - 19:50

122

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Prove the inequalites of complex vectors

Published on 08 Mar 2021 - 13:17

59

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Trying to show a certain map is a contraction

Published on 10 Mar 2021 - 20:51

58

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Find polynomial with inequality for derivative

Published on 14 Mar 2021 - 19:15

189

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Inequalities Problem : Cancelling out the variables

Published on 21 Mar 2021 - 5:26

List Question

$f(x+y) +y$ does not exceed $f(f(f(x)))$

Proving an inequality involving $L_2(\Omega)$ norms of $L_2$ and $C^{\infty}$ functions

Explicit bounds of the error in Stone weierstrass theorem

prove a challenging inequality or find a counterexample to it

Solutions of the functional inequality $f(x)\geq f(y)(1+x-y)$

Prove this functional inequality

Find all the functions $f:\left[0,1\right]\rightarrow\mathbb{R}$ so that ${x}'f\left(x\right)\geq 2xf\left(x^{2}\right)$

A general question about inequalities

functional calculus on C*-algebra and majoration of $||f(A+B)-f(A)||$

Possible inequalities with $\min, \max, \inf, \sup, \mathrm{abs}$ on vector space elements

Prove that $0\le\int_0^1\log(u){\rm d}x+\frac1{2\pi^2}\int_0^1\frac1{u^2}\left(\frac{{\rm d}u}{{\rm d}x}\right)^2{\rm d}x$

Prove the inequalites of complex vectors

Trying to show a certain map is a contraction

Find polynomial with inequality for derivative

Inequalities Problem : Cancelling out the variables

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