Question

Understand how this simplification of absolute value expression works

score 45 · Answer 1 · 2021-01-22 04:46:17

45

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Understand how this simplification of absolute value expression works

Published on 22 Jan 2021 - 4:46

score 168 · Answer 2 · 2021-01-23 09:19:54

168

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Minimum of $\left|1-\left(ab+bc+ca\right)\right|+\left|1-abc\right|$

Published on 23 Jan 2021 - 9:19

score 126 · Answer 3 · 2021-01-23 16:40:43

126

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proof of triangle inequality of |△| / (||+||) ≤ |△ |/ (||+||) + |△| / (||+||)

Published on 23 Jan 2021 - 16:40

score 92 · Answer 4 · 2021-01-24 03:57:57

92

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How to prove $|x^{4}+ ax^{3}+ bx^{2}+ cx+ d|\geq 1/8$ for some $x\in[-1, 1]$

Published on 24 Jan 2021 - 3:57

score 61 · Answer 5 · 2021-01-25 13:08:16

61

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Manipulating the triangle inequality to compare two sides

Published on 25 Jan 2021 - 13:08

score 134 · Answer 6 · 2021-01-29 22:33:33

134

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Proving $\sum_{cyc}\frac{\sqrt{s(s-a)}}{a}\geq\frac{3\sqrt{3}}2$ for $a$, $b$, $c$, $s$ the sides and semi-perimeter of a triangle

Published on 29 Jan 2021 - 22:33

score 39 · Answer 7 · 2021-02-15 00:43:20

39

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$\|A\|\leq \sum_{m=0}^\infty \|A_m\|$

Published on 15 Feb 2021 - 0:43

score 71 · Answer 8 · 2021-02-15 06:41:18

71

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To prove the triangle inequality for the given metric

Published on 15 Feb 2021 - 6:41

score 32 · Answer 9 · 2021-02-15 10:13:14

32

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Constant such that opposite direction of triangle inequality holds

Published on 15 Feb 2021 - 10:13

score 47 · Answer 10 · 2021-02-21 11:00:31

47

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Reverse triangle inequality proof checking

Published on 21 Feb 2021 - 11:00

score 691 · Answer 11 · 2021-03-04 09:30:23

691

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Prove that $\measuredangle\gamma= 90^{\circ}$

Published on 04 Mar 2021 - 9:30

score 415 · Answer 12 · 2021-03-05 03:33:15

415

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The inverse type of Bernhard Leeb's solution for IMO‐1983–inequality

Published on 05 Mar 2021 - 3:33

score 408 · Answer 13 · 2021-03-05 09:23:44

408

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A good combination of an Olympiad inequality and its solution

Published on 05 Mar 2021 - 9:23

score 72 · Answer 14 · 2021-03-11 06:02:27

72

Views

given two continuous functions, can I prove the inequality $||fg|| \le ||f|| ||g||$ using triangle inequality?

Published on 11 Mar 2021 - 6:02

score 40 · Answer 15 · 2021-03-15 16:30:03

40

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How to show $\lim _{n \rightarrow \infty} \int_{1-\frac{1}{n}}^{1}f(x) d x=0$

Published on 15 Mar 2021 - 16:30

List Question

Understand how this simplification of absolute value expression works

Minimum of $\left|1-\left(ab+bc+ca\right)\right|+\left|1-abc\right|$

proof of triangle inequality of |△| / (||+||) ≤ |△ |/ (||+||) + |△| / (||+||)

How to prove $|x^{4}+ ax^{3}+ bx^{2}+ cx+ d|\geq 1/8$ for some $x\in[-1, 1]$

Manipulating the triangle inequality to compare two sides

Proving $\sum_{cyc}\frac{\sqrt{s(s-a)}}{a}\geq\frac{3\sqrt{3}}2$ for $a$, $b$, $c$, $s$ the sides and semi-perimeter of a triangle

$\|A\|\leq \sum_{m=0}^\infty \|A_m\|$

To prove the triangle inequality for the given metric

Constant such that opposite direction of triangle inequality holds

Reverse triangle inequality proof checking

Prove that $\measuredangle\gamma= 90^{\circ}$

The inverse type of Bernhard Leeb's solution for IMO‐1983–inequality

A good combination of an Olympiad inequality and its solution

given two continuous functions, can I prove the inequality $||fg|| \le ||f|| ||g||$ using triangle inequality?

How to show $\lim _{n \rightarrow \infty} \int_{1-\frac{1}{n}}^{1}f(x) d x=0$

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