Question

For independent, symmetric random variables $(\xi_n)$, $E\left(\left(\sum\limits_n\xi_n\right)^2\land1\right)\le\sum\limits_nE(\xi_n^2\land1)$

score 211 · Answer 1 · 2026-03-25 04:42:51

211

Views

For independent, symmetric random variables $(\xi_n)$, $E\left(\left(\sum\limits_n\xi_n\right)^2\land1\right)\le\sum\limits_nE(\xi_n^2\land1)$

Published on 25 Mar 2026 - 4:42

score 929 · Answer 2 · 2026-03-23 10:23:22

929

Views

How to prove expression greater than 0

Published on 23 Mar 2026 - 10:23

score 56 · Answer 3 · 2018-01-28 20:41:34

56

Views

How to prove that $|\ln(1+x^4)) - \ln(1+y^4)| <= 3^\frac34|x-y| \space \forall \space x,y \in \mathbb R$

Published on 28 Jan 2018 - 20:41

score 483 · Answer 4 · 2018-01-28 22:01:33

483

Views

Prove that for any real numbers $a, b, a^4+b^4+2 \geqslant 4ab$.

Published on 28 Jan 2018 - 22:01

score 151 · Answer 5 · 2026-03-24 06:43:01

151

Views

Lagrangian multipliers with inequality constraints

Published on 24 Mar 2026 - 6:43

score 129 · Answer 6 · 2018-01-29 03:43:16

129

Views

$|a-b| \geq | |a| - |b| | \Longleftrightarrow |a-b| \geq |a| - |b| $?

Published on 29 Jan 2018 - 3:43

score 346 · Answer 7 · 2018-01-29 06:20:17

346

Views

(Need Help) Summation in inequalities problem

Published on 29 Jan 2018 - 6:20

score 1.6k · Answer 8 · 2018-01-29 11:12:42

1.6k

Views

bounds of matrix vector multiplication

Published on 29 Jan 2018 - 11:12

score 110 · Answer 9 · 2026-03-24 20:30:44

110

Views

$-5|2x+1|<10$, I keep getting the wrong answer

Published on 24 Mar 2026 - 20:30

score 88 · Answer 10 · 2018-01-29 14:29:00

88

Views

On a variation of Knopp's inequality

Published on 29 Jan 2018 - 14:29

score 234 · Answer 11 · 2018-01-29 15:28:51

234

Views

A polynomial differential inequality

Published on 29 Jan 2018 - 15:28

score 126 · Answer 12 · 2018-01-29 16:44:26

126

Views

For what of $n$ do we have $ a^n\le b^n+c^n$

Published on 29 Jan 2018 - 16:44

score 68 · Answer 13 · 2026-03-25 01:37:45

68

Views

Proving that $x^a-y^a<x-y$ for $0<y<x<1$ and $a \in (0,1)$

Published on 25 Mar 2026 - 1:37

score 209 · Answer 14 · 2026-03-25 11:53:12

209

Views

Inequality with $x^2+y^2+z^2=3$

Published on 25 Mar 2026 - 11:53

score 482 · Answer 15 · 2018-01-29 21:16:23

482

Views

Why is $xy ≤ 0.5(x^2+y^2)$?

Published on 29 Jan 2018 - 21:16

List Question

For independent, symmetric random variables $(\xi_n)$, $E\left(\left(\sum\limits_n\xi_n\right)^2\land1\right)\le\sum\limits_nE(\xi_n^2\land1)$

How to prove expression greater than 0

How to prove that $|\ln(1+x^4)) - \ln(1+y^4)| <= 3^\frac34|x-y| \space \forall \space x,y \in \mathbb R$

Prove that for any real numbers $a, b, a^4+b^4+2 \geqslant 4ab$.

Lagrangian multipliers with inequality constraints

$|a-b| \geq | |a| - |b| | \Longleftrightarrow |a-b| \geq |a| - |b| $?

(Need Help) Summation in inequalities problem

bounds of matrix vector multiplication

$-5|2x+1|<10$, I keep getting the wrong answer

On a variation of Knopp's inequality

A polynomial differential inequality

For what of $n$ do we have $ a^n\le b^n+c^n$

Proving that $x^a-y^a<x-y$ for $0<y<x<1$ and $a \in (0,1)$

Inequality with $x^2+y^2+z^2=3$

Why is $xy ≤ 0.5(x^2+y^2)$?

Trending Questions

Popular # Hahtags

Popular Questions